УГЛЕРОД-УГЛЕРОДНЫЙ КОМПОЗИТНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение относится к созданию фрикционных материалов из уплотненной углеродной пены. В соответствии с изобретением углерод-углеродный материал изготавливают из углеродной пенопластовой заготовки с открытыми порами, полученной из мезофазного пека, которую подвергают углеродному уплотнению с применением одного из процессов CVD, HIP, PIC, VPI, инжекции пека, полимера или же любой их комбинации. За счет использования пенопластовой заготовки, в которой имитирована микроструктура углеродного волокна, полученной при помощи единственной операции вспенивания вместо трудоемкого процесса изготовления материала из углеродного волокна, создан материал с высокими конструкционными характеристиками, стоимость которого значительно меньше стоимости аналогичных волоконных материалов. Полученный комбинированный композиционный материал обладает структурными, термическими и/или трибологическими свойствами и может быть использован в качестве фрикционных материалов, материалов для теплового регулирования или ...

ПОРИСТЫЙ УГЛЕРОДНЫЙ ПРОДУКТ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к получению пористых углеродных изделий и может быть использовано в электродах для топливных ячеек, суперконденсаторах и электрических аккумуляторах, в качестве адсорбентов и других областях. Заявленный способ получения пористого углеродного продукта включает изготовление монолитного шаблона из неорганического матричного материала, имеющего соединенные друг с другом поры, инфильтрирование пор шаблона, углеродом или веществом-предшественником углерода, образующим каркас сырца, содержащий углерод, окруженный матричным материалом, и кальцинирование каркаса сырца, с образованием пористого углеродного продукта. Шаблон получают осаждением ультрадисперсного порошка путем подачи в реакционную зону гидролизуемого или окисляемого исходного соединения матричного материала, где оно превращается в частицы матричного материала путем гидролиза или пиролиза, при этом частицы матричного материала являются агломерированными или агрегированными и образуют шаблон. Технический результат ...

СПОСОБ ФОРМИРОВАНИЯ РЕЖУЩИХ ЭЛЕМЕНТОВ ИЗ ПОЛИКРИСТАЛЛИЧЕСКОГО АЛМАЗА, СФОРМИРОВАННЫЕ ЭТИМ СПОСОБОМ РЕЖУЩИЕ ЭЛЕМЕНТЫ И ОСНАЩЕННОЕ ИМИ БУРОВОЕ ДОЛОТО

Изобретение относится к получению поликристаллического алмазного режущего элемента методом порошковой металлургии. Может использоваться для изготовления долот для бурения подземных пород. Для получения поликристаллического алмазного режущего элемента первоначально из алмазных частиц формуют вставку при давлении и температуре, достаточных для образования связей алмазного типа в присутствии катализатора, после чего практически полностью удаляют из нее катализатор. Вставку, практически не содержащую катализатор, прикрепляют к несущей подложке при температуре и давлении, достаточных для поддержания стабильности связей алмазного типа посредством связующего материала, по меньшей мере, частично отличающегося от материала катализатора. Полученный режущий элемент обладает высокой термостабильностью. 3 н. и 17 з.п. ф-лы, 3 ил.

КЕРАМИЧЕСКИЕ ИЗДЕЛИЯ И СПОСОБЫ ИХ ПРОИЗВОДСТВА

Изобретение относится к способу изготовления керамического изделия, полученного из керамической структуры, созданной по технологии 3D печати, которое может применяться в качестве керамического фильтра для фильтрации расплавленного металла. Способ включает карбонизацию керамической структуры, созданной по технологии 3D печати, которая включает пропитку и/или покрытие керамической структуры, созданной по технологии 3D печати, прекурсором углерода или печати керамической структуры по технологии 3D печати с использованием керамической печатной среды, содержащей прекурсор углерода. Возникающая керамическая структура подвергается пиролизу, чтобы сформировать сеть углеродных связей внутри окружающей керамической структуры, созданной по технологии 3D печати. Технический результат изобретения - снижение усадки и деформации изделий, что приводит к снижению риска образования трещин. 3 н. и 8 з.п. ф-лы, 3 ил.

СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЙ ИЗ ЭЛЕКТРОПРОВОДЯЩЕЙ ГРАФЕНОСОДЕРЖАЩЕЙ КЕРАМИКИ

Изобретение может быть использовано в производстве электронагревательных приборов, катализаторов, теплообменников, фильтров. Способ получения изделий из электропроводящей графеносодержащей керамики включает сухое смешение коллоидного графита с наполнителем каолинитом, последующее увлажнение полученной смеси, ее усреднение в условиях вакуумирования и циклического всестороннего обжатия в силовом механохимическом реакторе, дегазацию массы, формование изделий, сушку и термообработку. При этом проводят двухстадийный механохимический интеркаляционный синтез (МИС). На первой стадии МИС проводят обработку сухой смеси коллоидного графита с каолинитом в условиях трения о стенку в центробежном механохимическом реакторе со смещенной осью ротора относительно геометрического центра внутренней полости реактора, при обеспечении линейной скорости потока не менее 70 м/с на поверхности трения и температуре саморазогрева не менее 50°С в проточном и не менее 90°С в замкнутом режимах. Затем после увлажнения ...

СПОСОБ ПОЛУЧЕНИЯ КОМПОЗИТНОГО УГЛЕРОДСОДЕРЖАЩЕГО МАТЕРИАЛА

Изобретение относится к композитным материалам на углеродной основе, применяющимся в электрометаллургии в составе электродов, в частности, в электролитическом производстве алюминия и может быть использовано при изготовлении катодных блоков и набивной массы для монтажа катодного устройства алюминиевого электролизёра. Композитный углеродсодержащий материал получают смешением углеродистых компонентов с металлсодержащим и борсодержащим компонентами, с последующим формованием и термообработкой. Углеродистые компоненты смешивают с оксидом тугоплавкого металла в количестве от 8 до 18 мас. % и оксидом бора в количестве до 28 мас. % с последующим электрохимическим восстановлением оксидов до боридов и карбидов металла в объеме катода действующего электролизера. Изобретение обеспечивает создание углеродсодержащего материала с повышенной эрозионной стойкостью и улучшенным смачиванием. 1 з.п. ф-лы, 2 табл.

СВЕРХТОНКОЗЕРНИСТОЕ АЛМАЗНОЕ СПЕЧЕННОЕ ИЗДЕЛИЕ ВЫСОКОЙ ЧИСТОТЫ И ВЫСОКОЙ ТВЕРДОСТИ

... 1. Сверхтонкозернистое алмазное спеченное изделие высокой чистоты и высокой твердости, имеющее размер зерна, составляющий 100 нм или менее, которое получено путем подвергания сверхтонкозернистого природного алмазного порошка, имеющего гранулометрический разброс от нуля до 0,1 мкм, десиликации, сублимационной сушке порошка, подвергнутого десиликации, в растворе и спеканию осушенного сублимацией порошка без спекающей добавки. 2. Сверхтонкозернистое алмазное спеченное изделие высокой чистоты и высокой твердости по п.1, которое способно пропускать свет. 3. Способ получения сверхтонкозернистого алмазного спеченного изделия высокой чистоты и высокой твердости, предусматривающий десиликацию сверхтонкозернистого природного алмазного порошка, имеющего гранулометрический разброс от нуля до 0,1 мкм; сублимационную сушку подвергнутого десиликации порошка в растворе; заключение осушенного сублимацией порошка в танталовую или молибденовую капсулу; и нагрев и приложение избыточного давления к капсуле, ...

СИНТЕЗ СВЕРХАБРАЗИВНЫХ ЧАСТИЦ С РЕГУЛИРУЕМЫМ РАЗМЕЩЕНИЕМ КРИСТАЛЛИЧЕСКИХ ЗЕРЕН

... 1. Способ синтеза сверхабразивных частиц, предусматривающий следующие этапы:a) образование предшественника роста, который включает в себя по существу гомогенную смесь первичного материала и каталитического материала или слой первичного материала, включающего в себя первичный материал и порошковый каталитический слой, смежный первичному материалу, причем указанный порошковый каталитический слой содержит каталитический материал, а указанный предшественник роста имеет кристаллические затравки, расположенные в заданном рисунке, по меньшей мере, частично в предшественнике роста;b) нагрев предшественника роста при температуре и давлении, достаточных для роста сверхабразивных частиц, имеющих заданную морфологию.2. Способ по п.1, в котором предшественник роста включает в себя по существу гомогенную смесь первичного материала и каталитического материала.3. Способ по п.2, в котором предшественник роста дополнительно содержит металлический каталитический слой, смежный гомогенной смеси.4. Способ по ...

ЭЛЕКТРОЛИЗНАЯ ВАННА ДЛЯ ПОЛУЧЕНИЯ АЛЮМИНИЯ

... 1. Электролизная ванна (1) для получения алюминия, которая включает в себя ! кожух, ! по меньшей мере один катодный блок (6), расположенный по меньшей мере частично в кожухе (2), ! по меньшей мере один анод (11), подвешенный над ванной и погруженный в верхнюю часть электролизной ванны, ! изоляцию (3), покрывающую по меньшей мере частично внутреннюю поверхность кожуха (2) и расположенную между катодным блоком (6) и кожухом (2), ! кожух (2) и элементы, которые он содержит, ограничивающие тигель (10), который предназначен для приема электролизного расплава в контакте с катодным блоком (6), ! отличающаяся тем, что изоляция (3) выполнена, по меньшей мере частично, при помощи блоков (14) на основе углерода, имеющего теплопроводность ниже 1 Вт/м/К. ! 2. Электролизная ванна для получения алюминия по п.1, отличающаяся тем, что блоки (14) на основе углерода имеют плотность в пределах 0,03 и 0,8 г/см3, предпочтительно в пределах 0,1 и 0,6 г/см3. ! 3. Электролизная ванна для получения алюминия по одному ...

СПОСОБЫ ФОРМИРОВАНИЯ ПОЛИКРИСТАЛЛИЧЕСКИХ ПЛАСТИНОК, ПОЛИКРИСТАЛЛИЧЕСКИХ ЭЛЕМЕНТОВ И СОПУТСТВУЮЩИХ КОНСТРУКЦИЙ

... 1. Способ формирования поликристаллической пластинки, при выполнении которого:располагают в пресс-форме множество частиц, содержащих суперабразивный материал, подложку, содержащую твердый материал, и каталитический материал;частично спекают множество частиц в присутствии каталитического материала для формирования частично спеченной поликристаллической пластинки, имеющей первую проницаемость, прикрепленной к торцу подложки;отделяют подложку от частично спеченной поликристаллической пластинки;удаляют каталитический материал из частично спеченной поликристаллической пластинки; иполностью спекают частично спеченную поликристаллическую пластинку для формирования поликристаллической пластинки, имеющей уменьшенную, вторую проницаемость.2. Способ по п.1, в котором дополнительно сводят к минимуму рост зерен первого множества частиц, содержащих суперабразивный материал, во время его частичного спекания.3. Способ по п.1, в котором при полном спекании частично спеченной поликристаллической пластинки ...

ОГНЕУПОРНЫЙ МАТЕРИАЛ ДЛЯ ВНУТРЕННЕЙ ФУТЕРОВКИ ДОМЕННОЙ ПЕЧИ, ПОЛУЧАЕМЫЙ ЧАСТИЧНОЙ ГРАФИТИЗАЦИЕЙ СМЕСИ, СОДЕРЖАЩЕЙ C И SI

... 1. Огнеупорный материал, предназначенный для использования во внутренней футеровке доменной печи, который получают способом, включающим следующие стадии:a) изготовление смеси, содержащей:- кокс,- кремний исвязующий материал,b) формование необожженного блока из смеси, изготовленной на стадии (a),c) обжиг необожженного блока, изготовленного на стадии (b) иd) частичная графитизация обожженного блока, изготовленного на стадии (с), при температуре от 1600 до 2000°C.2. Огнеупорный материал по п. 1, в котором кокс, используемый на стадии (a), содержит, по меньшей мере, 50 мас.%, предпочтительно, по меньшей мере, 80 мас.%, предпочтительнее, по меньшей мере, 90 мас.%, еще предпочтительнее, по меньшей мере, 95 мас.%, особенно предпочтительно, по меньшей мере, 99 мас.% и наиболее предпочтительно полностью изотропный кокс.3. Огнеупорный материал по п. 1 или 2, в котором кокс, используемый на стадии (a), имеет содержание железа, составляющее не более чем 0,1 мас.%, предпочтительно не более чем 0,05 ...

СВЕРХТВЕРДЫЕ КОНСТРУКЦИИ И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

СПОСОБ ПРОИЗВОДСТВА УГЛЕРОДСОДЕРЖАЩЕГО КОМПОЗИТА

... 1. Способ производства углеродсодержащего композита, который включает стадию(а) пиролиза пористой металлоорганической каркасной структуры, содержащей по меньшей мере одно по меньшей мере бидентатное органическое соединение, координированное с по меньшей мере одним ионом металла, в защитной газовой атмосфере, где по меньшей мере одно по меньшей мере бидентатное органическое соединение является свободным от азота.2. Способ по п.1, в котором пиролиз проводят при, по меньшей мере, 500°C.3. Способ по п.1 или 2, в котором защитная газовая атмосфера содержит азот.4. Способ по п.1 или 2, в котором по меньшей мере один ион металла представляет собой ион, выбранный из группы металлов, состоящей из Mg, Al, Zr, Ti, V, Cr, Mo, Fe, Co, Cu, Mi и Zn.5. Способ по п.1 или 2, в котором свободное от азота по меньшей мере одно по меньшей мере бидентатное органическое соединение является производным дикарбоновой, трикарбоновой или тетракарбоновой кислоты.6. Способ по п.1, который включает дальнейшую стадию(б ...

ИЗДЕЛИЕ ИЗ АБРАЗИВНОГО МАТЕРИАЛА И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Изделие из абразивного материала, включающее материал, содержащий абразивный материал и наполнитель, имеющий средний отрицательный коэффициент теплового расширения в диапазоне температур от примерно 70К до примерно 1500К.2. Изделие из абразивного материала по п.1, в котором абразивный материал имеет твердость по Виккерсу по меньшей мере около 25 ГПа.3. Изделие из абразивного материала по п.1, в котором абразивный материал содержит материал, выбранный из группы, включающей алмаз, алмазоподобный углерод, нитриды, карбиды, бориды, силикаты или какую-либо их комбинацию.4. Изделие из абразивного материала по п.3, в котором карбиды содержат силикаты, включающие диоксид кремния.5. Изделие из абразивного материала по п.3, в котором карбиды включают карбид титана, карбид титана/бора, карбид тантала, карбид ниобия или какую-либо их комбинацию.6. Изделие из абразивного материала по п.3, в котором нитриды включают нитрид алюминия.7. Изделие из абразивного материала по п.3, в котором абразивный материал ...

КОМПОЗИТНЫЙ КОМПАКТ ИЗ ПОЛИКРИСТАЛЛИЧЕСКОГО АЛМАЗА

... 1. Композитный компактный элемент из поликристаллического алмаза (ПКА), содержащий подложку, ПКА-структуру, связанную с подложкой, и связующий материал, связывающий ПКА-структуру с подложкой; и при этом ПКА-структура является термически стабильной и имеет средний модуль Юнга по меньшей мере 800 ГПа, интерстициальный средний свободный пробег ПКА-структуры равен по меньшей мере 0,05 мкм и не превышает 1,5 мкм и стандартное отклонение среднего свободного пробега составляет по меньшей мере 0,5 мкм и не превышает 1,5 мкм.2. Композитный компактный элемент ПКА по п.1, в котором связующим материалом является припойный сплав в виде припойного слоя между ПКА-структурой и подложкой.3. Композитный компактный элемент ПКА по п.2, в котором припойный сплав имеет температуру начала плавления не более 1050°С и содержит по меньшей мере один элемент, выбранный из группы, состоящей из Ti, V, Cr, Mn, Zr, Nb, Mo, Hf, Та, W и Re.4. Композитный компактный элемент ПКА по п.1, в котором связующий материал содержит ...

Печь для графитации углеродных изделий

Изобретение относится к конструкциям печей для графитации углеродных изделий и может быть использовано в электродной промышленности. Цель изобретения состоит в повьппении качества обработки изделий и производительности печи. Для этого печь содержит вертикальные перфорированные углеродные трубки 8, выполненные с заглушенными концами на уровне верха тепловой изоляции и соединенные с патрубками 4,5 системы газоподвода. При разогреве керна изделий происходит вытеснение летучих зольных примесей из термообрабатываемых изделий 6 и тепловой изоляции 7 в трубки 8 за счет более низкого давления в них, чем в керне изделия и тепловой изоляции , при этом не происходит озоле- ния поверхности трубок, т.е. исключается возможность конденсации. Кроме того, происходит рафинирование изделий за счет предотвращения обратного озоления их. 2 ил. сл со со о: со to (риг2 ...

Углеродсодержащая масса для соединения углеродных блоков в алюминиевом электролизере

Hochtemperaturfester Hybridwerkstoff aus Calciumsilikat und Kohlenstoff

Die Erfindung betrifft einen temperaturfesten keramischen Hybridwerkstoff mit einer Matrix aus Calcium-Silitkat-Hydrat, in die Kohlenstoff eingebettet ist, wobei der Kohlenstoff überwiegend aus Graphitpartikel (GP) mit einer geordneten graphitischen Gitterstruktur besteht und einen Gewichtsanteil von bis zu 40% ausmacht. Die Matrix besteht aus Tobermorit und/oder Xonotlit (X) und kann Wollastonitstäbchen und/oder körniges Silikat (SK) enthalten. Die Abmessung der Graphitpartikel (GP) beträgt 0,013 mm. Der Hybridwerkstoff eignet sich besonders für Gießvorrichtungen von NE-Metallen.

Verwendung eines Schleifkörpers zur Herstellung eines Schleifwerkzeugs

KOMPAKTIERTER DIAMANT MIT NIEDRIGEM ELEKTRISCHEM SPEZIFISCHEM WIDERSTAND.

Für die Herstellung von Schneidwerkzeugen geeignetes Pulver aus kubischem Bornitrid und Verfahren zu seiner Herstellung

Monocrystalline graphite diamagnetic material - having high negative susceptibility

Diamagnetic material is produced by moistening graphite monocrystals with adhesive material, orienting them uniformly by allowing them to settle with or without the aid of a magnetic field directed perpendicular to the hexagonal crystal axis, and pressing them together to form plates of the desired thickness; when the plates are to be bent subsequently, a thermoplastic material is used for bonding. If the material is to be used as a surface layer, the graphite plate is adhered onto the surface, or aligned parallel to the surface after superficial dissolution of the surface to be coated and retained after evaporation of the solvent.

SCHUTZSCHICHT FUER KOHLENSTOFF- UND GRAPHITELEKTRODEN

Waermeaustauscher

Wärmeverteilermodul und Verfahren zur Herstellung desselben

Ein Wärmeverteilermodul (10) besitzt einen Sockel (12), ein durch ein erstes aktives Hartlotmaterial (18) mit dem Sockel (12) verbundenes Wärmeverteilermodul (14), eine durch ein zweites aktives Hartlotmaterial (20) mit dem Wärmeverteilermodul (14) verbundene Zwischenschicht (24), eine durch ein drittes aktives Hartlotmaterial (28) mit der Zwischenschicht (24) verbundene Isolierplatte (22) und eine durch ein viertes aktives Hartlotmaterial (30) mit der Isolierplatte (22) verbundene Schaltplatte (26). Die ersten bis vierten aktiven Hartlotmaterialien (18, 20, 28, 30) besitzen eine Dicke im Bereich von 3 bis 20 mum, wenn die Komponenten des Wärmeverteilermoduls unter Druck miteinander verbunden werden, und enthalten einen aktiven Bestandteil (Ti) in einer Menge im Bereich von 400 bis 1000 mug/cm·2·.

Producing components, e.g. pistons for engines, comprises casting a mixture of mesophase carbon powder, liquid, gelling agent and additives followed by binder removal, carbonization and graphitization

Producing components comprises casting a mixture of mesophase carbon powder, liquid, gelling agent and additives followed by binder removal, carbonization and graphitization.

A PCD body

A PCD body comprises a skeletal mass of inter-bonded diamond grains 22 defining interstices 24 between them. At least some of the interstices contain a filler material comprising a metal catalyst material for diamond, the filler material containing Ti, W and an additional element M selected from the group consisting of V, Y, Nb, Hf, Mo, Ta, Zr Cr, Zr and the rare earth elements. The content of Ti within the filler material is at least 0.1 weight % and at most 20 weight %. The content of M within the filler material is at least 0.1 weight % and at most 20 weight %, and the content of W within the filler material is at least 5 weight % and at most 50 weight % of the filler material.

Methods of making and attaching tsp material for forming cutting elements, cutting elements having such tsp material and bits incorporating such cutting

Polycrystalline diamond material and method of forming

Polycrystalline diamond material

COATING CARBON ARTICLES

... 1419302 Coated carbon electrodes NIPKTI PO CHERNA METALURGIA 29 Jan 1973 4459/73 Heading B2E [Also in Divisions C7 and H5] A protective coating layer on a cylindrical carbon article 11 is made by burning continuously an electric arc between a layer of material on the article and a lateral electrode 2, the arc being stabilised in a magnetic field and having a current of more than 600A, the article and electrode moving helically relative to one another at a pitch of more than 10 mm and producing a helical band on the article having a width 9 of more than 10 mm when measured in a direction parallel to the axis of the article. The magnetic field is generated by a coil 1 concentric with the lateral electrode 2. The coil may be in series with the arc (Fig 1 not shown) or be supplied separately 7, 8. Hollow iron core 5 is water cooled, as is the non magnetic face 6. When the article 11 is an electrode a plurality of protective layers are applied. The layers consist of aluminium, alone or with ...

METHOD FOR THE PREPARATION OF CARBON MOULDINGS AND ACTIVATED CARBON MOULDINGS THEREFROM

... 1447076 Porous carbon KUREHA KAGAKU KOGYO KK 7 Nov 1973 51761/73 Heading C1A Porous carbon material is manufactured by mixing, at an elevated temperature, a pitch of softening point 50-350‹ C., carbon content 80- 97% by weight, hydrogen/carbon atomic ratio 0À3-2À5 : 1 and a nitrobenzene-insoluble fraction of less than 60% by weight, with at least one aromatic hydrocarbon of boiling point at least 200‹ C., forming the mixture into a desired shape, treating the shaped material with a solvent in which the pitch is relatively insoluble but in which the aromatic hydrocarbon is relatively soluble to extract the aromatic hydrocarbon from the shaped material and form a porous pitch, oxidizing the porous pitch at ambient-400‹ C. by the use of gaseousorliquid oxidizing agents to form infusible pitch and calcining it in an inert atmosphere at higher than 600‹ C. The aromatic hydrocarbon may be naphthalene, methyl naphthalene, dimethylnaphthalene, anthracene or phenanthrene. The solvents may be butane ...

Polycrystalline superhard material

Method of processing a body of polycrystalline diamond material

Super-hard constructions, method for making same and method for processing same

TOOLS FOR WORKING NON-METALLIC HARD MATERIALS

Cutting element

REFRACTORY COMPOSITES

... 1,246,135. Refractory compositions. UNION CARBIDE CORP. Aug. 9, 1968, No. 38159/68. Addition to 986, 179. Heading C7A. In a process for production of an impermeable, oxidation-resistant, machinable, refractory semi-alloyed composite, a mixture is prepared consisting of (a) finely divided graphite or coke, (b) a member of the group consisting of boron, boron carbide, boron silicide, germanium, silicon, silicon 2 carbide and silicon boride, and (c) HfO 2 or ZrO2; and the mixture is subjected in a non- oxidizing atmosphere to a temperature and pressure sufficient to graphitize material (a) and to melt materials (b) and (c). The mixture may also include a carbonaceous binder such as pitch. Suitable temperatures and pressures are at least 1, 700‹ C. and at least 2, 500 p.s.i.

SILICON CARBIDE CRYSTALS

... 1278840 #-Silicon carbide PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 Oct 1969 [18 Oct 1968] 50708/69 Heading C1A [Also in Division H1] #-Silicon carbide is produced by recrystallization in a chamber whose walls are of SiC in an inert gas atmosphere having a nitrogen partial pressure of more than 1 atmosphere at 2300- 2600‹ C. Ar and CO may also be present.

Polycrystalline superhard material and method of making same

Polycrystalline superhard material

INTEGRAL CARBONISED BODIES AND THEIR USE IN FUEL CELLS

Disclosed herein is a carbon product comprising at least two carbonaceous materials and one flexible graphite sheet interposed between said two carbonaceous materials, said two carbonaceous materials and said flexible graphite sheet having been joined together and integrated by calcination in an inert atmosphere as one carbon body, and the joining surface of at least one of said carbonaceous materials comprising both joining parts and non-joining parts which have an optional shape and are uniformly arranged on the joining surface, said carbon product as the electrode substrate of fuel cells, and a process for producing the same.

Ultra-hard diamond composite material and its use in drill bits

Ultra-hard composite constructions comprise an ultra-hard body having a plurality of diamond crystals bonded to one another by a carbide reaction product. A reactant material is selected from materials that are strong carbide formers, such as silicon, boron, titanium, molybdenum or vanadium, to form a carbide reaction product with diamond at HPHT conditions. The body includes a further diamond region positioned along a surface portion of the body and that is substantially exclusively diamond, and that has a diamond volume content of 95 to 99 percent or more. The further diamond region can form a working surface of the composite construction. A substrate can be attached to the body, thereby forming a compact, and can include metallic materials, ceramic materials, carbides, nitrides, cermets, and mixtures thereof. An intermediate layer can be interposed between the body and the substrate depending on the substrate and/or method of attaching the same. The body may be used in drill bits.

Polycrystalline diamond cutting elements having improved thermal resistance

Polycrystalline diamond constructions are disclosed which have a polycrystalline diamond body and a substrate attached thereto, wherein the diamond body has a material microstructure comprising a plurality of bonded-together diamond crystals forming a polycrystalline matrix phase, and second phase formed from different types of materials or sintering aids designed to reduce or eliminate the amount of free Group VIII elements therein. The materials used to combine or react with Group VIII elements include Cr, Mn, Ti, Zr, Hf, V, Nb, Mo, W, Ta and alloys thereof. The sintering aids may comprise Pd, Fe, Co, Ni, Mn, Ti, TiO2, Si, alkali earth metals, alkaline earth metals, rare earth elements and O. Thus the sintering aids may be titanates, SiO2 or complex oxides. The use of such materials and the reduction and/or elimination of free Group VIII elements, in addition to graphitization, facilitates the sintering the construction at high pressure/high temperature conditions, e.g., greater than ...

GRAPHITE REFRACTORY ARTICLE HAVING DENSE STRUCTURE WITH LOW POROSITY

A superhard structure and method of making same

Superhard constructions & methods of making same

Superhard Constructions & Methods of making same

A method of manufacture of PCD material using a sintering additive such as diamond particles

A method of making polycrystalline diamond (PCD) including providing a fraction of diamond particles or grains and a sintering additive. The sintering additive may be a carbon source of nano-sized particles or grains i.e. nano-diamond. The diamond particles and sintering additive are formed into an aggregated mass, which is consolidated and a binder material added to form a green body. The green body is subject to conditions of pressure and temperature (HTHP) at which diamond is more thermodynamically stable than graphite, and for a time sufficient to consume the sintering additive. The PCD thus formed is substantially devoid of any nano-structures. The PCD can be used in the construction of cutting faces for drill bits.

Ceramic objects and methods for manufacturing the same

A method for manufacturing a ceramic object comprising the carbonizing 101 of a 3D printed ceramic structure, which may include the introduction of a network of carbon bonds within and/or surrounding the printed ceramic structure. The ceramic printing medium can comprise a carbon precursor in order to form the structure with carbon already included before pyrolysing of the structure occurs. Alternatively, the carbon precursor can be impregnated 101a by vacuum, spraying or soaking into the structure and/or coated 101b on to the structure after formation but prior to pyrolysing 101c, 101d. The refractory ceramic object can be a ceramic filter or more specifically, a ceramic foam foundry filter for molten metal filtration.

Super-hard constructions, method for making same and method for processing same

A construction comprising a sintered polycrystalline super-hard layer having mutually opposite reinforced boundaries, each of which is bonded to a respective reinforcement structure, in which the super-hard layer comprises polycrystalline diamond (PCD) material or polycrystalline cubic boron nitride (PCBN) material. The construction will be configured such that the equivalent circle diameter of each reinforced boundary is at least ten times the mean thickness of the super-hard layer between them. The reinforcement structures will be substantially free of material having a melting point of less than 2,000 degrees Celsius, at least adjacent the reinforced boundaries.

Ceramic impregnated superabrasives

Superhard constructions & methods of making same

A super hard polycrystalline body includes a region 34 of thermally stable polycrystalline inter-grown grains of super hard material with an exposed working surface 4, a substrate 32 and a region 36 interposed between the thermally stable region 34 and the substrate 32. The interposing region 36 extends across a surface of the substrate 32 and has a first phase comprising a plurality of non-inter-grown diamond grains, the majority of which have a coating of nano-sized cBN particles on them. Also a method of forming a superhard polycrystalline body by forming an assembly of a mass of grains of a super hard material, a source of catalyst for these grains, a further mass of diamond grains coated with nano-sized cBN particles and a mass of grains to form a substrate. The assembly is processed at a pressure of at least 5 GPa and at a temperature where the super hard grains bond. The body can be used for rock drilling of oil and gas extraction.

A polycrystalline super hard construction and a method of making same

A cutter insert comprising a polycrystalline diamond (PCD) body bonded to a substrate 36, where the PCD body comprises a working surface, a peripheral surface, a chamfer 40 extending between the working surface and the peripheral surface, a first region substantially free of solvent/catalyst material and a second region that includes solvent/catalyst adjacent to the first region. The interface of the first and second regions is substantially parallel to the plane of the chamfer 40 and the distance 56 from the midpoint of the chamfer 40 to the interface of the first and second regions in a direction perpendicular to the plane of the chamfer is at least 0.4 times the thickness of the PCD body as measured along the peripheral surface of the body form the working surface to its interface with the substrate.

Superhard constructions & methods of making same

A super hard polycrystalline body includes a region 34 of thermally stable polycrystalline inter-grown grains of super hard material with an exposed working surface 4, a substrate 32 and a region 36 interposed between the thermally stable region 34 and the substrate 32. The interposing region 36 extends across a surface of the substrate 32 and has a first phase comprising a plurality of non-inter-grown diamond grains, the majority of which have a coating of nano-sized BN particles on them. Also a method of forming a superhard polycrystalline body by forming an assembly of a mass of grains of a super hard material, a source of catalyst for these grains, a further mass of diamond grains and a mass of grains to form a substrate. The assembly is processed at a pressure of at least 5 GPa and at a temperature where the super hard grains bond and nano-sized BN particles grow on and coat the diamond particles. The body can be used for rock drilling of oil and gas extraction.

Improvements in refractory bodies with a layer of lustrous carbon

... 612,742. Electric heating resistances. PHILIPS LAMPS, Ltd. May 31, 1946, No. 16549. Convention date, Feb. 20, 1942. [Class 39 (iii)] [Also in Group XXXVI] A layer of lustrous carbon is deposited on refractory insulating tubular bodies 6, more particularly in the manufacture of electrical resistances, by passing the tubular bodies 6 in succession through a cool-walled chamber 1 filled with a neutral gas and into which a cool gaseous carbon compound is introduced, the said bodies being simultaneously heated from within to the temperature necessary for the separation and deposition of carbon thereupon. The tubular bodies 6 slide on an electrically conducting rod 9, which has a contracted part 10 for ' localized heating and extends through the chamber 1 from an inlet pipe 4 to an outlet pipe 5. The pipes 4 and 5 are furnished with lateral branches 7 and 8 through which the neutral gas, e.g. nitrogen, is introduced into the chamber 1. A carbon layer having a resistance of approximately 2,400 ...

Super-hard structure, tool element and method of making same

Polycrystalline diamond structure

Method of processing polycrystalline diamond material

Abrasive articles

An abrasive article comprises at least one abrasive particle tenaciously bonded to a bonding matrix the bonding matrix containing as its essential constituents 13 to 54% copper, 2 to 33% tungsten, 10 to 50% iron, 8 to 36% nickel, 1 to 25% chromium, 1 to 6% tin, 0.2 to 2.5% carbon, 0.4 to 7% boron and 0.1 to 2.3% silicon, the bonding matrix having a micro structure characterized by tungsten carbide and chromium boride particles bonded in a lattice comprising a solid solution consisting essentially of nickel, iron, copper, chromium, tin, carbon, boron and silicon having dispersed throughout a complex eutetic consisting essentially of nickel, chromium, boron, silicon, and iron. In one form the article comprises a single large diamond particle attached to a holder by the bonding matrix, the diamond particle either having a single point or a cluster of points; in another form the abrasive article is a wheel comprising a hub section adapted to be mounted on a rotatable shaft and a portion consisting ...

IMPREGNATING CARBONIZING PROCESS AND APPARATUS

Improvements in processes of manufacturing silicon carbide refractories and productsthereof

A process for the manufacture of bonded silicon carbide refractories comprises forming a mixture of silicon carbide and a bond which is non - reactive with silicon carbide at temperatures up to the fusing point of the bond and which has a fusing point between 1800 and 2100 DEG C., and heating the mixture at least to the temperature of incipient fusion of the bond, in an atmosphere which is inert with respect to both the carbide and the bond. Examples of suitable bonds are alumina, magnesian spinel, mullite and compounds of alumina, magnesia and silica, alumina lime and silica or alumina, magnesia and lime. A carbon monoxide atmosphere is satisfactory for use with a bond of alumina, or mixtures of alumina, magnesia and lime, but where silica is a principal constituent of the bond, a more inert atmosphere such as nitrogen or helium is preferable.

Improvements in the production of graphite

Graphite is produced by extruding, carbonizing and graphitizing a green stock produced by hot mixing a crushed carbonized product with a carbonaceous binder, e.g. pitch or resin, the carbonized product having a volatile content of less than 8% by weight and having been prepared by hot mixing crushed uncalcined coke and a carbonaceous binder, extruding the hot mixture and carbonizing, e.g. in a baking furnace, the final temperature of the carbonizable shaped stock during carbonization being substantially uniform throughout the volume of the stock and the uncalcined coke used to prepare the carbonizable shaped stock having a degree of fineness such as to provide in the graphite a with-the-grain coefficient of thermal expansion greater than 3.0 x 10-6/ DEG C. (20-100 DEG C.). The degree of fineness is preferably such that at least 98% by weight of the coke will pass through a 200 mesh Tyler screen. The final temperature differential of the carbonized product formed from the carbonizable shaped ...

Superhard constructions & methods of making same

PROCESS FOR PRODUCING RETICULATE STRUCTURES

GRAPHITE COMPOSITION

Improvements in or relating to the purification of carbon or graphite articles

Carbon or graphite is purified by treatment at elevated temperature with a gaseous fluorinating agent, e.g. fluorine, hydrogen fluoride, or a fluorinated hydrocarbon which dissociates to produce fluorine or hydrogen fluoride at the temperature of treatment. Organic fluorides specified are tetrafluoro-, dichloro-, monofluoro-, dichlorodifluoro-, monochlorodifluoro-, and trichloromonofluoro-methane and mono-, di, tri- and tetrafluoro ethylene. The temperature of treatment may be 1860-2600 DEG C., preferably 2200-2600 DEG C. The material may be pretreated with a gaseous or vaporous chlorinating agent at a progressively increasing temperature initially less than 1860 DEG C., preferably increasing to a temperature in the range 1860-1950 DEG C. Chlorinating agents specified are chlorine, carbon tetrachloride, and hexachloropropylene. Nitrogen, ammonia, or helium may be used as carrier or diluent for the chlorinating and/or fluorinating agent and to sweep out the chlorinating and fluorinating ...

CONTINUOUS PROCESS OF GRAPHITIZATION

... 1494390 Continuous graphitization VEREINIGTE ALUMINIUM-WERKE AG 2 May 1975 [24 May 1974] 18518/75 Heading C1A [Also in Division H5] In a continuous process for the graphitization of baked preformed carbon bodies, the bodies that are to be graphitized are embedded in a granular, heat insulating bed of carbonaceous packing material which is contained in close-coupled continuously moving furnace cars, and in which the ends of stationary current supplying graphite electrodes projecting downwards from above are immersed for resistance heating the bodies that are to be graphitized, the electrodes being spaced apart in the direction of travel of the cars. The passage of the graphite electrodes through the packed bed is facilitated by vibrating them horizontally. The electrodes may be protected against atmospheric oxidation above the bed and up to electrode holders by high-temperature-resistant steel jackets. The carbonaceous packing material in the furnace cars may become partially graphitized ...

POLYCRYSTALLINE DIAMOND BODY

Cementing process for carbon articles

Two carbon or graphite articles are joined together by means of a cement comprising furfuryl alcohol, optionally together with furfuraldehyde, and the cement is then successively resinified and carbonized. The cement may contain finely divided carbon in the form of graphite or calcined pitch coke as filler, and may contain hydrogen chloride as resinifying agent. Carbonizing may be effected at 1000 DEG C. in an atmosphere of argon or packed in lamp black. Oxidation resistance may be improved by the presence of 0,05 to 0,25% of H3PO4 in the carbonized product. Specifications 901,847, 929,464 and 929,465 are referred to.

Polycrystalline diamond composite compact element and tools incorporating same

New process of brasquage of the tanks for igneous electrolysis.

Manufactoring process of refractory products.

Manufactoring process of mobile contacts for installation electric and mobile contacts obtained.

FIREPROOF PRODUCT

VERFAHREN UND VORRICHTUNG ZUM GRAPHITIEREN VON KOHLENSTOFFKOERPERN

PROCEDURE AND DEVICE FOR THE GRAPHITIEREN OF CARBON BODIES

FEUERFESTE KERAMISCHE MASSE UND DEREN VERWENDUNG

SELBSTTRAGENDER VERBUNDKOERPER UND VERFAHREN ZU SEINER HERSTELLUNG

PROCEDURE FOR THE PRODUCTION OF A DIAMOND COMPOSITE MATERIAL

VERFAHREN U. VORRICHTUNG ZUR KONTINUIERLICHEN GRAFITIERUNG

VERFAHREN UND VORRICHTUNG ZUM GRAPHITIEREN VON KOHLENSTOFFKOERPERN

USE OF A SCHLEIFWERKZEUGES

PROCEDURE AND DEVICE FOR THE GRAPHITIEREN OF KOHLENSTOFFKOERPERN

PROCEDURE FOR THE PRODUCTION OF AGREED DIAMOND SHARPENING PARTICLES

POLYCRYSTALLINE DIAMANTKOERPER AND PROCEDURE FOR ITS PRODUCTION

SHARPENING AND SLIDE CONTACTS FOR ELECTRO-TECHNOLOGY, IN PARTICULAR COMMUTATORS AND SLIPRINGS FOR ELECTRICAL MACHINES

PROCEDURE FOR THE PRODUCTION OF A DIAMANTHALTIGEN TOOL ELEMENT AND DEVICE FOR THIS

METHOD FOR THE PRODUCTION OF LINKED UP DIAMOND-COATED FILMS

VERWENDUNG EINES SCHLEIFWERKZEUGES

PROCEDURE AND DEVICE FOR THE CONTINUOUS ONE AND SIMULTANEOUS ONE GRAPHITIERUNG OF BEING ENOUGH ARTIFICIAL COAL BODIES AND OF GRANULAR CARBON MATERIAL COUNTER CURRENT AGAINST THE CURRENT.

PROCEDURE FOR THE PRODUCTION OF TOOL BLANKS FROM POLYCRYSTALLINES BONDING MATERIAL WITH LEVELS CARBIDE CARRIERS/DIAMOND OR CBN INTERMEDIATE SURFACES.

PROCEDURE FOR THE PRODUCTION OF DIAMANTFORMK¯RPERN.

PROCEDURE FOR INDUCTIVE HEATING OF CERAMIC SHAPED PARTS

CARBON-CONTAINING, FIREPROOF MATERIAL AND PROCEDURE FOR THE PRODUCTION OF THE SAME

PROCEDURE FOR THE REDUCTION OF THE IMPURITIES OF KOHLENSTOFFKORPERN

Methods of fabricating a polycrystalline diamond structure

In an embodiment, a method of fabricating a polycrystalline diamond structure includes forming an assembly including a sintered polycrystalline diamond body positioned between an aluminum-containing layer and a substrate. The method further includes subjecting the assembly to a high-pressure/high-temperature process to form the polycrystalline diamond structure including a polycrystalline diamond table bonded to the substrate.

Acid-lead battery electrode comprising a network of pores passing therethrough, and production method

A structure including a network of parallel, homogeneous pores extending through the structure, and an outer frame around the lateral faces of the structure. The structure and the frame are made of carbon. The electrode is covered by a layer based on lead. The pores are filled with an active material based on lead.

Polycrystalline diamond compact including a substrate having a raised interfacial surface bonded to a polycrystalline diamond table, and applications therefor

In various embodiments, a polycrystalline diamond compact (“PDC”) comprises a substrate including an interfacial surface having a raised region. In an embodiment, a PDC comprises a substrate including an interfacial surface having a generally cylindrical raised region and a peripheral region extending about the generally cylindrical raised region. The generally cylindrical raised region extends to a height above the peripheral region of about 450 μm or less. The PDC includes a PCD table bonded to the interfacial surface of the substrate. The PCD table includes an upper surface and at least one peripheral surface, and includes a plurality of bonded diamond grains defining interstitial regions. At least a portion of the interstitial regions includes a metallic constituent therein. In another embodiment, instead of employing a generally cylindrical raised region, the interfacial surface may include a plurality of raised arms extending above the face. Each raised arm extends radially and circumferentially.

Polycrystalline diamond element

An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or ail of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.

Composite Tooling

A carbon foam article useful for, inter alia, composite tooling or other high temperature applications, which includes a substrate, wherein the substrate includes at least one material selected from carbon foam, extruded graphite, graphite foam, and isomolded graphite. The tool may also include a skin as a working surface and a filler disposed below the skin. The tool has a surface roughness of no more than about 63 micro-inches. Such a tool may be used to make a composite prototype part.

Carbon molds for use in the fabrication of bulk metallic glass parts and molds

Novel molds and methods for Bulk Metallic Glass (BMG) molding using carbon templates obtained from pyrolyzed materials are provided. The method employs the Carbon MEMS (C-MEMS) technique to derive molds of different geometries and dimensions. The resultant carbon structures are stable at very high temperatures and have sufficient mechanical strength to be used as master molds for the thermoplastic forming of BMGs.

Apparatus and method for manufacturing vitreous silica crucible

There are provided an apparatus and a method for manufacturing a vitreous silica crucible which can prevent the deterioration of the inner surface property in the manufacturing process of a vitreous silica crucible. The apparatus includes a mold defining an outer shape of a vitreous silica crucible, and an arc discharge unit having electrodes and a power-supply unit, wherein each of the electrodes includes a tip end directed to the mold, the other end opposite to the tip end, and a bent portion provided between the tip end and the other end.

Carbon Nanotube Ink

Carbon nanotube inkjet solutions and methods for jetting are described.

Computer tomographic workpiece measuring device

A marine device has a floating buoy containing electronics, a submerged payload containing electrical devices and electronics, a power source and a mooring line. At least a part of the power source is submerged and electrically connected to at least one of the submerged payload and the floating buoy, and the mooring line extends between the buoy and at least one of the power source submerged part, the submerged payload and a submerged anchor having a mass allowing it to stay under the water surface.

Method of producing silicon carbide-coated carbon material

A method of producing a silicon carbide-coated carbon material that comprises heating, under a non-oxidizing atmosphere, a carbon substrate and an amorphous inorganic ceramic material obtained by heating a non-melting solid silicone, thereby forming a silicon carbide coating film on the carbon substrate. A silicon carbide-coated carbon material that exhibits excellent heat resistance and has a uniform silicon carbide coating can be obtained.

Polycrystalline diamond compacts including at least one transition layer and methods for stress management in polycrsystalline diamond compacts

Embodiments relate to polycrystalline diamond compacts (“PDCs”) that are less susceptible to liquid metal embrittlement damage due to the use of at least one transition layer between a polycrystalline diamond (“PCD”) layer and a substrate. In an embodiment, a PDC includes a PCD layer, a cemented carbide substrate, and at least one transition layer bonded to the substrate and the PCD layer. The at least one transition layer is formulated with a coefficient of thermal expansion (“CTE”) that is less than a CTE of the substrate and greater than a CTE of the PCD layer. At least a portion of the PCD layer includes diamond grains defining interstitial regions and a metal-solvent catalyst occupying at least a portion of the interstitial regions. The diamond grains and the catalyst collectively exhibit a coercivity of about 115 Oersteds or more and a specific magnetic saturation of about 15 Gauss·cm 3 /grams or less.

High-temperature-resistant hybrid material made of calcium silicate and carbon

A temperature-resistant ceramic hybrid material has a matrix made of calcium silicate hydrate. Carbon is embedded in the matrix. The carbon is predominantly composed of graphite particles having an ordered graphitic lattice structure and the carbon makes up a weight fraction of up to 40%. The matrix is composed of tobermorite and/or xonotlite and can contain wollastonite rods and/or granular silicate. The size of the graphite particles is 0.01-3 mm. The hybrid material is especially suitable for casting devices for non-ferrous metals.

Polycrystalline compacts having material disposed in interstitial spaces therein, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts

Polycrystalline compacts include smaller and larger hard grains that are interbonded to form a polycrystalline hard material. The larger grains may be at least about 150 times larger than the smaller grains. An interstitial material comprising one or more of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal may be disposed between the grains. The compacts may be used as cutting elements for earth-boring tools such as drill bits, and may be disposed on a substrate.

Method for manufacturing high-density fiber reinforced ceramic composite materials

Disclosed herein is a method of manufacturing a high-density fiber reinforced ceramic composite material, including the steps of: 1) impregnating a fiber preform material multi-coated with pyrolytic carbon and silicon carbide to form impregnated fiber reinforced plastic composite material; 2)carbonizing the impregnated fiber reinforced plastic composite material to form carbonized fiber composite material; 3) a primary reaction-sintering of the fiber composite material; 4) cooling the primarily reaction-sintered fiber composite material down to room temperature and then impregnating the primarily reaction-sintered fiber composite material with a solution in which a polymer precursor for producing silicon carbide (SiC) is dissolved in a hexane (n-hexane) solvent; and 5) a secondary reaction-sintering of the fiber composite material; and a high-density fiber reinforced ceramic composite material manufactured using the method.

Copper-carbon composition

A copper-carbon composition including copper chemically bonded to carbon, wherein the copper and the carbon form a single phase material formed by mixing carbon into molten copper. The single phase material characterized in that it is meltable and that the carbon does not phase separate from the copper when the single phase material is heated to a temperature that melts the copper-carbon composition.

Polycrystalline compacts including grains of hard material, earth-boring tools including such compacts, and methods of forming such compacts and tools

Polycrystalline compacts include a polycrystalline superabrasive material comprising a first plurality of grains of superabrasive material having a first average grain size and a second plurality of grains of superabrasive material having a second average grain size smaller than the first average grain size. The first plurality of grains is dispersed within a substantially continuous matrix of the second plurality of grains. Earth-boring tools may include a body and at least one polycrystalline compact attached thereto. Methods of forming polycrystalline compacts may include coating relatively larger grains of superabrasive material with relatively smaller grains of superabrasive material, forming a green structure comprising the coated grains, and sintering the green structure. Other methods include mixing diamond grains with a catalyst and subjecting the mixture to a pressure greater than about five gigapascals (5.0 GPa) and a temperature greater than about 1,300° C. to form a polycrystalline diamond compact.

Filmy Graphite and Process for Producing the Same

A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.

Carbon material and method of manufacturing the same

A carbon material and a method of manufacturing the same are provided that make it possible to form a layer of a metal that is highly reactive with carbon, such as tungsten, on a carbon substrate while at the same time inhibiting an increase in manufacturing cost and a degradation of processing accuracy. The carbon material has a carbon substrate 2 , a first layer 12 , and a second layer 13 . The first layer contains a carbide of a transition metal. The second layer contains a second metal and/or a carbide of the second metal and a carbide of the transition metal, the second metal being at least one metal selected from the group of metals consisting of Group 4 elements, Group 5 elements, and Group 6 elements. The first and second layers are formed on a surface of the carbon substrate in that order.

Refractory metal ceramics and methods of making thereof

A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.

REFRACTORY METAL BORIDE CERAMICS AND METHODS OF MAKING THEREOF

A composition having nanoparticles of a refractory-metal boride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component, boron, and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles, boron, and an organic compound having a char yield of at least 60% by weight to form a precursor mixture. A composition having nanoparticles of a refractory-metal boride that is not in the form of a powder. 1. A composition comprising:nanoparticles of a refractory-metal boride; anda carbonaceous matrix;wherein the composition is not in the form of a powder.2. The composition of claim 1 , wherein the nanoparticles comprise titanium boride.3. The composition of claim 1 , wherein the nanoparticles comprise zirconium boride claim 1 , hafnium boride claim 1 , tungsten boride claim 1 , or tantalum boride.4. The composition of claim 1 , wherein the refractory metal is a group IV-VI transition metal claim 1 , niobium claim 1 , molybdenum claim 1 , chromium claim 1 , or vanadium.5. The composition of claim 1 , wherein the composition comprises at least 5% by weight of the nanoparticles.6. The composition of claim 1 , wherein the composition comprises at least 99% by weight of the nanoparticles.7. The composition of claim 1 , wherein the average diameter of the nanoparticles is less than 100 nm.8. The composition of claim 1 , wherein the carbonaceous matrix comprises graphitic carbon claim 1 , carbon nanotubes claim 1 , or amorphous carbon.9. The composition of claim 1 , wherein the composition further comprises: ...

Graphite foil-bonded device and method for preparing same

A device has a layered structure, and the layered structure has a graphite foil bonded to a surface of a substrate, wherein the graphite foil contains a laminate of a plurality of natural graphite flakes parallel to the surface of the substrate, wherein the graphite foil and the surface of the substrate are bonded through diffusion bonding directly, or bonded with a cured resin, a cured pitch, a carbonized resin, a carbonized pitch, a graphitized resin or a graphitized pitch in between, wherein the graphite foil contains not less than 95%, preferably 99%, of carbon.

High density polycrystalline superhard material

A polycrystalline superhard material comprises a mass of diamond, graphite or cubic boron nitride particles or grains bonded together by ultrathin inter-granular bonding layers, the inter-granular bonding layers having an average thickness of greater than about 0.3 nm and less than about 100 nm. There is also disclosed a method for making such a polycrystalline superhard material.

Porous carbon product with layer composite structure, method for producing same and use thereof

Inexpensive product consisting of porous carbon, with a pore structure which is suitable for retaining electrode parts which can be used in particular for a use as an electrode material for a lithium-sulphur secondary battery, and a method comprising the following method steps: (a) providing a template consisting of inorganic material which contains spherical nanoparticles and pores, (b) infiltrating the pores of the template with a precursor for carbon of a first variety, (c) carbonizing so as to form an inner layer on the nanoparticles with a first microporosity, (d) infiltrating the remaining pores of the template with a precursor substance for carbon of a second variety, (e) carbonizing the precursor substance, wherein an outer layer with a second microporosity which is lower than the first microporosity is produced on the inner layer, and (f) removing the template so as to form the carbon product with layer composite structure, comprising an inner layer consisting carbon with a first, relatively high microporosity, which has a free surface facing a cavity, and an outer layer consisting of carbon with a second, relatively low microporosity, which has a free surface facing away from the cavity.

Selectively Leached, Polycrystalline Structures for Cutting Elements of Drill Bits

The rate of leaching of a polycrystalline diamond (PCD) cutting layer for cutting elements or other wear parts is varied by introduction into the PCD of an additive prior to leaching. Selective introduction of the additive into one or more regions of a PCD cutting structure allows controlling leaching rates of selective leaching of parts of the PCD structure, which allows for creating of a boundary between the leached and non-leached regions of a PCD structure to be made so that is not parallel to the surface or surfaces exposed to the leaching solution. The additive is comprised of a material that increases the permeability of the PCD or acceptance of the PCD to the leaching solution, such as a hydrophile.

Joint of metal material and ceramic-carbon composite material, method for producing same, carbon material joint, jointing material for carbon material joint, and method for producing carbon material joint

Provided are a joint of a metal material and a ceramic-carbon composite material which can be used at high temperatures, a method for producing the same, a novel carbon material joint, a jointing material for a carbon material joint, and a method for producing a carbon joint. A joint 6 of a metal material 4 and a ceramic-carbon composite material 1 is a joint of a metal material 4 made of metal and a ceramic-carbon composite material 1. The ceramic-carbon composite material 1 includes a plurality of carbon particles 2 and a ceramic portion 3 made of ceramic. The ceramic portion 3 is formed among the plurality of carbon particles 2. The metal material 4 and the ceramic-carbon composite material 1 are joined through a joining layer 5. The joining layer 5 contains a carbide of the metal and the ceramic.

Method for producing silicon carbide-carbon composite

Provided is a novel method for producing a silicon carbide-carbon composite. A green body containing a carbonaceous material 2 having silicon nitride attached to a surface thereof is fired to obtain a silicon carbide-carbon composite 1.

Functional film

A functional film that is applied to a surface of a medical apparatus or a biomaterial includes a film of Ti-doped tetrahedral amorphous carbon (ta-C:Ti film).

Composite polycrystal

A composite polycrystal contains polycrystalline diamond formed of diamond grains that are directly bonded mutually, and compressed graphite dispersed in the polycrystalline diamond.

HIGH DENSITY CARBON-CARBON FRICTION MATERIALS

A method for making a carbon-carbon composite brake disc by infiltrating a porous carbon preform with a resin and carbonizing the resin-infiltrated preform at a high pressure of at least about 5,000 psi to form a densified carbon-carbon composite disc brake with a final density of at least about 1.9 g/cc. The porous carbon preform includes a plurality of fabric sheets having non-woven oxidized polyacrylonitrile fibers, pitch fibers, or rayon fibers and a basis weight in the range from about 1250 to about 3000 grams per square meter. The fabric sheets are needled together. The porous carbon preform is infiltrated with resin, which includes at least one of an isotropic resin or a mesophase resin. 1. A method for making a carbon-carbon composite brake disc , comprising: a plurality of fabric sheets comprising non-woven fibers selected from the group consisting of oxidized polyacrylonitrile fibers, pitch fibers, or rayon fibers, wherein each fabric sheet of the plurality of fabric sheets has a basis weight in the range from about 1250 to about 3000 grams per square meter, and', 'needling fibers selected from the group consisting of oxidized polyacrylonitrile fibers, pitch fibers, or rayon fibers, wherein the needling fibers join together the plurality of fabric sheets;, '(i) infiltrating a porous carbon preform with a resin to form a resin-infiltrated preform, wherein the resin comprises at least one of an isotropic resin or a mesophase resin, and wherein the porous carbon preform is derived from(ii) carbonizing the resin-infiltrated preform at a pressure of at least about 5,000 psi to form a densified carbon-carbon composite disc brake; and(iii) repeating steps (i)-(ii) until the densified carbon-carbon composite disc brake has a density of at least about 1.9 g/cc.2. The method of claim 1 , wherein the resin-infiltrated preform is not subjected to a resin-stabilization cycle prior to carbonizing the resin-infiltrated preform.3. The method of claim 1 , wherein ...

SiC-COATED CARBON COMPOSITE MATERIAL

Provided is a SiC-coated carbon composite material including a graphite base material and a CVD-SiC coating covering the graphite base material. A porosity of a core part of the graphite base material is 12 to 20%, and a SiC-infiltrated layer extending from the CVD-SiC coating is included in a periphery of the core part of the graphite base material. The SiC-infiltrated layer is constituted of a plurality of regions arranged such that Si content becomes smaller stepwise in an order from a first surface on the CVD-SiC coating side toward a second surface on the graphite base material side. 1. A SiC-coated carbon composite material comprising:a graphite base material; anda CVD-SiC coating covering the graphite base material,wherein a porosity of a core part of the graphite base material is 12 to 20%,wherein a SiC-infiltrated layer extending from the CVD-SiC coating is included in a periphery of the core part, andwherein the SiC-infiltrated layer is constituted of a plurality of regions arranged such that Si content becomes smaller stepwise in an order from a first surface on the CVD-SiC coating side toward a second surface on the graphite base material side.2. The SiC-coated carbon composite material according to claim 1 ,wherein the SiC-infiltrated layer is constituted of a first region to an i-th region to an n-th region arranged in this order from the first surface toward the second surface, and Si content of the i-th region is larger than Si content of an (i+1)-th region.3. (canceled)4. The SiC-coated carbon composite material according to claim 1 ,wherein the SiC-infiltrated layer has a thickness of 150 μm or more.5. The SiC-coated carbon composite material according to claim 4 ,wherein the SiC-infiltrated layer has the thickness of 300 μm or more.6. The SiC-coated carbon composite material according to claim 1 ,wherein the porosity of the core part is 15 to 17%.7. The SiC-coated carbon composite material according to claim 1 ,{'sup': '3', 'wherein a true density ...

GRAPHENE MACRO-ASSEMBLY-FULLERENE COMPOSITE FOR ELECTRICAL ENERGY STORAGE

Disclosed here is a method for producing a graphene macro-assembly (GMA)-fullerene composite, comprising providing a mixture of graphene oxide and water, adding a hydroxylated fullerene to the mixture, and forming a gel of the hydroxylated fullerene and the mixture. Also described are a GMA-fullerene composite produced, an electrode comprising the GMA-fullerene composite, and a supercapacitor comprising the electrode. 1. A method for producing a graphene macro-assembly (GMA)-fullerene composite , comprising:providing graphene oxide;adding a hydroxylated fullerene compound to the graphene oxide; andperforming a gelation process using the graphene oxide and the hydroxylated fullerene.2. The method of claim 1 , wherein providing the graphene oxide comprises providing a water suspension of graphene oxide.3. The method of claim 2 , wherein the water suspension of graphene oxide comprises a mixture of at least about 7 mg of graphene oxide in 1 mL of water.4. The method of claim 1 , wherein the hydroxylated fullerene compound comprises a Chydroxylated fullerene claim 1 , a Chydroxylated fullerene claim 1 , or a Chydroxylated fullerene.5. The method of claim 1 , wherein adding the hydroxylated fullerene compound comprises adding about 5 mg of water soluble C(OH)to the graphene oxide claim 1 , the graphene oxide comprising a mixture of about 20 mg of graphene oxide in 1 mL of water.6. The method of claim 1 , further comprising sonicating the hydroxylated fullerene and the graphene oxide.7. The method of claim 1 , further comprising adding claim 1 , to about 1 g of a suspension formed from the hydroxylated fullerene compound and the graphene oxide claim 1 , about 211 μL of ammonium hydroxide solution to form a mixture claim 1 , wherein performing the gelation process comprises performing the gelation process using the mixture.8. The method of claim 1 , wherein performing the gelation process comprises performing the gelation process at about 80° C. for about 72 hours.9. The ...

PHOTOPOLYMER RESINS WITH SOLID AND LIQUID PHASES FOR POLYMER-DERIVED CERAMICS

Resins for 3D printing of a preceramic composition loaded with a solid polymer filler, followed by converting the preceramic composition to a 3D-printed ceramic material, are described. Some variations provide a preceramic composition containing a radiation-curable liquid resin formulation and a solid polymer filler dispersed within the liquid resin formulation. The liquid resin formulation is compatible with stereolithography, UV curing, and/or 3D printing. The solid polymer filler may be an organic polymer, an inorganic polymer, or a combination thereof. The solid polymer filler may itself be an inorganic preceramic polymer, which may have the same composition as a polymerized variant of the liquid resin formulation, or a different composition. Many compositions are disclosed as options for the liquid resin formulation and the solid polymer filler. 1. A preceramic composition containing a radiation-curable liquid resin formulation and a solid polymer filler dispersed within said liquid resin formulation.2. The preceramic composition of claim 1 , wherein said radiation-curable liquid resin formulation is a UV-curable inorganic resin formulation.3. The preceramic composition of claim 1 , wherein said radiation-curable liquid resin formulation is a UV-curable organic resin formulation.4. The preceramic composition of claim 1 , wherein said radiation-curable liquid resin formulation is capable of being polymerized when exposed to electromagnetic radiation wavelengths selected from 200 nm to 500 nm.5. The preceramic composition of claim 1 , wherein said solid polymer filler is present at a concentration from about 0.1 vol % to about 95 vol % of said preceramic composition.6. The preceramic composition of claim 5 , wherein said solid polymer filler is present at a concentration from about 1 vol % to about 70 vol % of said preceramic composition.7. The preceramic composition of claim 1 , wherein said solid polymer filler is an organic polymer.8. The preceramic ...

Method for the production of a curved ceramic sound attenuation panel

A method of fabricating a sound attenuation panel of curved shape, the method including impregnating a fiber structure defining a cellular structure with a ceramic precursor resin; polymerizing the ceramic precursor resin while holding the fiber structure on tooling presenting a curved shape corresponding to the final shape of the cellular structure; docking the cellular structure with first and second skins, each formed by a fiber structure impregnated with a ceramic precursor resin, each skin being docked to the cellular structure before or after polymerizing the resin of the skins; pyrolyzing the assembly constituted by the cellular structure and the first and second skins; and densifying the assembly by chemical vapor infiltration.

SIC-BOUND HARD MATERIAL PARTICLES, POROUS COMPONENT FORMED WITH SIC-BOUND DIAMOND PARTICLES, METHOD OF PRODUCING SAME AND USE THEREOF

The invention relates to SiC-bound diamond hard material particles, a porous component formed with SiC-bound diamond particles, methods for producing same and the use thereof. Diamond hard material particles and components have a composition of 30 vol. % to 65 vol. % diamond, 70 vol % to 35 vol. % SiC and 0 to 30 vol. % Si, and a component has a porosity in the range of 10% to 40% 1. SiC-bound hard diamond material particles having a composition of 30%-65% by volume of diamond , 70%-35% by volume of SiC and 0% to 30% by volume of Si , and diamond particles in individual hard material particles are cohesively bonded to one another by the SiC and Si formed in a thermal treatment and have a particle size in the range of 50 μm-5000 μm.2. The SiC-bound hard diamond material particles as claimed in claim 1 , wherein a median particle size dof diamond particles in the hard material particles in the range of 5 μm to 500 μm is maintained.3. The SiC-bound hard diamond material particles as claimed in claim 1 , wherein not more than 90% of the surface area of the diamond particles is cohesively bonded to SiC.4. A process for producing SiC-bound hard diamond material particles as claimed in claim 1 , comprising the steps of admixing diamond particles with an organic binder and shaped into granules by drying and granulation process;subjecting the granules to a thermal treatment in an oxygen-free atmosphere, in which organic constituents are pyrolyzed and carbon is formed in situ from the organic binder in the course of pyrolysis and deposited in vitreous form on surfaces of the diamond particles;performing a silicization during the thermal treatment or in a subsequent second thermal treatment with admixed pulverulent silicon and particulate spacers;forming silicon carbide at the same time by chemical reaction with the carbon deposited on surfaces of diamond particles and/or with the diamond particles, to form hard material particles, wherein thediamond particles in the ...

Electronically conducting carbon and carbon-based material by pyrolysis of dead leaves and other similar natural waste

The present invention disclosed herein is carbon nanomaterial and carbon based nanocomposites by pyrolysis of dead leaves and other similar natural waste material. In particular, the invention relates to synthesis of valuable functional carbon materials and their nanocomposites from different waste materials such as plant dead leaves and their use in high value added product applications.

CARBON FIBER COMPOSITE MATERIAL, AND BRAKE MEMBER, STRUCTURAL MEMBER FOR SEMICONDUCTOR, HEAT RESISTANT PANEL AND HEAT SINK USING THE CARBON FIBER COMPOSITE MATERIAL

There are provided a carbon fiber composite material having higher strength than conventional carbon fiber composite materials, and a brake member, a structural member for semiconductor, a heat resistant panel and a heat sink, all of which use this carbon fiber composite material. 1. A carbon fiber composite material , obtained by mixing coated carbon fiber with a binding resin , the carbon fiber being coated with a coating resin , subsequently molding the mixture and carbonizing the molded product , and subjecting the resultant carbonized product to melt impregnation with silicon ,wherein the lattice spacing d002 of the carbon (002) plane of the carbon fiber as measured by an X-ray diffraction method is 3.36 to 3.43,wherein the coating resin is phenolic resol resin, andwherein a carbon powder is dispersed in the coating resin.2. The carbon fiber composite material according to claim 1 , wherein the carbon fiber is a carbon fiber obtained by calcining a pitch-derived precursor.34-. (canceled)5. The carbon fiber composite material according to claim 1 , wherein the carbon fiber has a fiber length of 1 to 20 mm.6. The carbon fiber composite material according to claim 1 , wherein the carbon fiber is in the form of a fiber bundle (tow) including 1000 to 40 claim 1 ,000 fibers/bundle.7. The carbon fiber composite material according to claim 1 , wherein the binding resin is a phenolic novolac resin.8. The carbon fiber composite material according to claim 1 , wherein the carbon fiber composite material is obtained by further mixing graphite and an organic fiber when mixing the coated carbon fiber with the binding resin.9. The carbon fiber composite material according to claim 8 , wherein the organic fiber is a fibrillated acrylic fiber.10. The carbon fiber composite material according to claim 1 , obtained by further incorporating a silicon carbide powder during the mixing of the coated carbon fiber and the binding resin.11. The carbon fiber composite material according ...

MOLD COMPOSITION COMPRISING A SUGAR COMPONENT

A moulding composition comprising at least one sugar component in a weight proportion of at least 20% in relation to the weight of the moulding composition, and at least one aggregate as well as a mould for a moulding process, wherein the mould is a compact three-dimensional structure made of the moulding composition, and a process for moulding a workpiece with the mould. 1. A moulding composition comprisingat least one sugar component in a weight proportion of at least 20%, in relation to the weight of the moulding composition, andat least one aggregate.2. A moulding composition according to claim 1 , wherein the at least one sugar component is selected from the group consisting of monosaccharides claim 1 , disaccharides claim 1 , oligosaccharides claim 1 , sugar alcohols derived from a monosaccharide claim 1 , a disaccharide or an oligosaccharide claim 1 , hydrates thereof and mixtures thereof.3. A moulding composition according to claim 1 , wherein the at least one sugar component is a compound of the general formula I{'br': None, 'sub': (n*a)', '(n*a*2)+2b-2c', '(n*a)-c, 'CHO\u2003\u2003(I),'} n is 1 to 10, preferably 1 or 2,', 'a is 4, 5 or 6,', 'b is 0 or 1, and', 'c is n−1 or n,, 'wherein'}a hydrate of a compound of general formula I or a mixture of at least two compounds of general formula I and/or hydrates thereof.4. A moulding composition according to claim 1 , wherein the at least one sugar component is selected from the group consisting of sucrose claim 1 , D-fructose claim 1 , D-glucose claim 1 , D-trehalose claim 1 , cyclodextrins claim 1 , erythritol claim 1 , isomalt claim 1 , lactitol claim 1 , maltitol claim 1 , mannitol claim 1 , xylitol and mixtures thereof claim 1 , particularly preferably D-trehalose claim 1 , isomalt claim 1 , erythritol claim 1 , lactitol claim 1 , mannitol and eutectic mixtures of sucrose and D-glucose.5. A moulding composition according to claim 1 , wherein the at least one sugar component has a melting point and a ...

COMPOSITE SINTERED BODY

A composite sintered body includes a first phase and a second phase. The first phase is a diamond phase, and the second phase is a phase formed of one or more types of elements or compounds or both thereof and applying strain to the first phase. A contained amount of the second phase is larger than 0 ppm and not larger than 1000 ppm. As a result, there is provided a high wear-resistant, high local wear-resistant, and high chipping-resistant diamond-containing composite sintered body. 1. A composite sintered body comprising a first phase and a second phase ,the first phase being a diamond phase,the second phase being a phase formed of one or more types of elements or compounds or both thereof and applying strain to the first phase,a contained amount of the second phase being larger than 0 ppm and not larger than 1000 ppm.2. The composite sintered body according to claim 1 , whereina value of a linear expansion coefficient of the second phase is larger than a value of a linear expansion coefficient of the first phase.3. The composite sintered body according to claim 1 , whereinan average particle size of particles forming the first phase is not larger than 1000 nm.4. The composite sintered body according to claim 1 , wherein an average particle size of particles forming the second phase is not larger than 500 nm.5. The composite sintered body according to claim 1 , wherein a Knoop hardness of the composite sintered body is not lower than 60 GPa. The present invention relates to a diamond-containing composite sintered body.Diamond is a highest hardness substance among the substances existing on earth, and thus, a sintered body including diamond has been used as a material for a wear-resistant tool, a cutting tool and the like.Japanese Patent Laying-Open No. 2003-292397 (PTD 1) discloses a diamond polycrystalline body which is a polycrystalline body composed of diamond converted and sintered from a carbon substance of a graphite-type layered structure under ultrahigh ...

Methods of Making Polycrystalline Diamond Bodies Having Annular Regions with Differing Characteristics

Polycrystalline diamond bodies having an annular region of diamond grains and a core region of diamond grains and methods of making the same are disclosed. In one embodiment, a polycrystalline diamond body includes an annular region of inter-bonded diamond grains having a first characteristic property and a core region of inter-bonded diamond grains bonded to the annular region and having a second characteristic property that differs from the first characteristic property. The annular region decreases in thickness from a perimeter surface of the polycrystalline diamond body towards a centerline axis. 1. A method of making a polycrystalline diamond body , comprising:positioning a first quantity of diamond grains having a first characteristic property in a low-reactivity cup having a perimeter wall;distributing the first quantity of diamond grains into an at least partially annular configuration in which the annular region decreases in thickness from the perimeter wall towards a centerline axis of the low-reactivity cup;positioning a second quantity of diamond grains having a second characteristic property that differs from the first characteristic property in the low-reactivity cup, the second quantity of diamond grains be positioned to at least partially contact the perimeter wall of the low-reactivity cup and to at least partially contact the first quantity of diamond grains; andsubjecting the low-reactivity cup, the first quantity of diamond grains, and the second quantity of diamond grains to a HPHT process in which adjacent diamond grains are sintered to one another and form diamond-to-diamond bonds.2. The method of claim 1 , further comprising claim 1 , during the HPHT process claim 1 , melting and directing a catalyst material through the first quantity of diamond grains and the second quantity of diamond grains claim 1 , thereby encouraging diamond-to-diamond bonding of adjacent diamond grains.3. The method of claim 1 , further comprising positioning a ...

Systems and Methods for Enabling Communication Between USB Type-C Connections and Legacy Connections Over an Extension Medium

Techniques for supporting USB and video communication over an extension medium are provided. In some embodiments, an upstream facing port device (UFP device) is coupled to legacy connectors of a host device, and a downstream facing port device (DFP device) is coupled to a USB Type-C receptacle of the sink device that may provide both USB and DisplayPort information. The UFP device and DFP device communicate to properly configure the USB Type-C connection for use in the extension environment. In some embodiments, a source device is coupled to the UFP device via a USB Type-C connection, and legacy video and USB devices are coupled to the DFP device. The UFP device and DFP device again communicate to cause the source device to properly configure the USB Type-C connection for use in the extension environment.

ARTIFICIAL GRAPHITE FLAKE MANUFACTURING METHOD AND PRODUCT THEREOF

The present invention discloses an artificial graphite flake manufacturing method, which uses the PI (polyimide) films as the material; via a stacking step, a first heating step and a second heating step, the PI films are processed to form the artificial graphite flakes so as to increase the lubrication and the hardness, improve the heat conduction for balancing temperature increase and better the smoothness; in addition, via a perforation step, a hole structure is formed on the artificial graphite flakes so as to increase the heat diffusion area and the air permeability of the artificial graphite flakes, and then increase the defect-free rate and the smoothness thereof. 1. An artificial graphite flake manufacturing method for manufacturing artificial graphite flakes by PI (polyimide) films , comprising:a stacking step for alternately stacking the PI films and natural graphite dust papers to make each PI film be sandwiched by two of the natural graphite dust papers, and then accommodating the alternately stacked PI films and the natural graphite dust papers by a graphite box and graphite boards, and the graphite box having a predetermined space for inflation;a first heating step for heating up the stacked PI films to 1000˜1200° C. in stages to carbonize the PI films to be half-finished products;a second heating step for keeping the carbonized half-finished products under a stacking status, and heating up the carbonized half-finished products to 2500˜3000° C. in stages so as to graphitize the half-finished products to be the artificial graphite flakes.2. The artificial graphite flake manufacturing method of claim 1 , wherein before the stacking step further comprising a perforation step for forming a plurality of holes with a diameter of 0.1˜1 mm on each of the artificial graphite flakes.3. The artificial graphite flake manufacturing method of claim 1 , wherein after the second heating step further comprising a perforation step for forming a plurality of holes with a ...

FRIABLE CERAMIC-BONDED DIAMOND COMPOSITE PARTICLES AND METHODS TO PRODUCE SAME

Ceramic-bonded diamond composite particle includes a plurality of diamond grains and silicon carbide reaction bonded to the diamond grains having a composition of 60-90 wt. % diamond, 10-40 wt. % silicon carbide, ≦2 wt. % silicon. Particles are formed by processes that forms granules in a pre-consolidation process, forms a densified compact including ceramic-bonded diamond composite material in a consolidation process or forms ceramic-bonded diamond composite material directly, and a post-consolidation process in which the densified compact or ceramic-bonded diamond composite material is mechanically broken to form a plurality of the particles. Inert or active material can be incorporated into the densified compact or coated on granules to reduce the number and extent of diamond to silicon carbide bonding occurring in the consolidation process and make the ceramic-bonded diamond composite material more friable and easily breakable into composite particles. 1. A method to produce a ceramic-bonded diamond composite particle , the method comprising:forming a diamond feedstock including a plurality of diamond grains and silicon particles;subjecting the diamond feedstock to at least one pre-consolidation process to form a granule;forming a densified compact in a consolidation process using the granule, the densified compact including ceramic-bonded diamond composite material, andmechanically processing the densified compact in a post-consolidation process in which a plurality of ceramic-bonded diamond composite particles are formed,wherein the ceramic-bonded diamond composite particles include a plurality of diamond grains and silicon carbide reaction bonded to the diamond grains, andwherein a composition of the ceramic-bonded diamond composite particle includes 60-90 wt. %, preferably 70-90 wt. %, more preferably 79-81 wt. %, more preferably 80 wt. % diamond, 10-40 wt. % silicon carbide, ≦2 wt. % silicon.2. The method according to claim 1 , wherein the diamond feedstock ...

CARBON FOAM AND MANUFACTURING METHOD THEREOF

A carbon foam comprising linear portions and node portions joining the linear portions, wherein the linear portions have a diameter of 0.1 μm or more and 10.0 μm or less, and the carbon foam has a surface with an area of 100 cmor more. 1. A carbon foam comprising linear portions and node portions joining the linear portions , whereinthe linear portions have a diameter of 0.1 μm or more and 10.0 μm or less, and{'sup': '2', 'the carbon foam has a surface with an area of 100 cmor more.'}2. A carbon foam comprising linear portions and node portions joining the linear portions , whereinthe linear portions have a diameter of 0.1 μm or more and 10.0 μm or less, and{'sup': '2', 'the carbon foam has no through holes with an area of 2000 mmor more.'}3. The carbon foam according to claim 1 , wherein the carbon foam comprises a region of 4000 mmor more having no through holes with an area of 2000 mmor more.4. The carbon foam according to claim 1 , wherein a ratio of the number of the linear portions to the number of the node portions is 1.3 or more and 1.6 or less.5. The carbon foam according to claim 1 , having no through holes with an area of 1000 mmor more.6. The carbon foam according to claim 1 , wherein at least a part of the carbon foam has a density of the node portions of 15 claim 1 ,000/mmor more.7. The carbon foam according to claim 1 , having a bulk density of 3.0 kgmor more and 400 kgmor less.8. The carbon foam according to claim 1 , wherein the linear portions have a diameter of 0.1 μm or more and 5.0 μm or less.911-. (canceled)12. The carbon foam according to claim 1 , wherein at least a part of the carbon foam has a density of the node portions of 30 claim 1 ,000/mmor more.13. The carbon foam according to claim 1 , whereinin at least a part of the carbon foam, a thickness direction of the carbon foam is defined as x direction, a direction perpendicular to the x direction is defined as y direction, and a direction perpendicular to the x direction and the y ...

METHOD OF MAKING A THERMALLY STABLE POLYCRYSTALLINE SUPER HARD CONSTRUCTION

A method of making a thermally stable polycrystalline super hard construction having a plurality of interbonded super hard grains and interstitial regions disposed therebetween to form a polycrystalline super hard construction having a first thermally stable region and a second region, the first thermally stable region forming at least part of a working surface of the construction, comprises treating the polycrystalline super hard material with a leaching mixture to remove non-super hard phase material from a number of interstitial regions in the first region. The step of treating comprises masking the polycrystalline super hard construction along at least a portion of the peripheral side surface up to and/or at the working surface to inhibit penetration of the leaching mixture into the super hard construction through a peripheral side surface of the super hard construction. 1. A method of making a thermally stable polycrystalline super hard construction comprising a plurality of interbonded super hard grains and interstitial regions disposed therebetween to form a polycrystalline super hard construction having a first thermally stable region and a second region , the first thermally stable region forming at least part of a working surface of the construction , the method comprising:treating the polycrystalline super hard material with a leaching mixture to remove non-super hard phase material from a number of interstitial regions in the first region;the step of treating comprising masking the polycrystalline super hard construction along at least a portion of the peripheral side surface up to and/or at the working surface to inhibit penetration of the leaching mixture into the super hard construction through a peripheral side surface of the super hard construction, the chamfer spacing the working surface from the peripheral side surface.2. The method of claim 1 , wherein the step of removing non-super hard phase material from the interstitial regions in the first ...

METHOD FOR MANUFACTURING A CONSOLIDATED DENSIFIED PART MADE OF CERAMIC OR MADE OF CARBON

A method for manufacturing a part from a first ceramic or from carbon, consolidated by a second ceramic, having a determined geometry, that involves carrying out the following sequence of steps: a) manufacturing a preform made from an organic polymer; b) impregnating the preform made from an organic polymer with a resin that is a precursor of the first ceramic or a resin that is a precursor of carbon; c) crosslinking and/or polymerising, then pyrolysing the resin that is a precursor of the first ceramic or the resin that is a precursor of carbon; to obtain a part made from a first ceramic or from carbon having the same geometry as the part to be manufactured; e) depositing the second ceramic on the part made from a first ceramic or from carbon by means of a chemical vapour deposition or CVD process or a chemical vapour infiltration or CVI process. 1. A method for manufacturing a part made of a first ceramic or made of carbon , consolidated by a second ceramic , having a determined geometry , wherein the following successive steps are carried out:a) a preform made of an organic polymer is manufactured, the preform having the same geometry as the part to be manufactured;b) the preform made of an organic polymer is impregnated with a first-ceramic precursor resin or a carbon precursor resin;c) the first-ceramic precursor resin or the carbon precursor resin is cross-linked and/or polymerised and then pyrolysed;d) optionally, steps b) and c) are repeated;whereby, at the end of step c) or step d), a part made of a first ceramic or made of carbon, having the same geometry as the part to be manufactured, is obtained;e) the second ceramic is deposited onto the part made of a first ceramic or made of carbon obtained at the end of step c) or step d), by a Chemical Vapour Deposition (CVD) method or a Chemical Vapour Infiltration (CVI) method.2. The method according to claim 1 , wherein the determined geometry is a complex geometry.3. The method according to claim 1 , wherein ...

COATING, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF

The invention relates to a coating which has special absorption properties for electromagnetic radiation from the wavelength spectrum of sunlight and to a method for producing the coating and to its use. The coating is formed by a layer which is formed on the surface of a substrate or on a reflective layer formed on the surface of the substrate. Carbon nanotubes are contained in the layer. The proportion of carbon nanotubes contained per unit of area or unit of volume and/or the layer thickness of the layer is selected such that it absorbs electromagnetic radiation from the wavelength spectrum of sunlight at predefinable proportions and the proportion of electromagnetic radiation from the wavelength spectrum of a black radiator at a temperature greater than 50° C. which is emitted is very small. 1. A coating comprising a layer which is formed on the surface of a substrate or on a reflective layer formed on the surface of the substrate ,whereinthe layer is formed by carbon nanotubes contained in the layer and in this respect the proportion of carbon nanotubes contained per unit of area or unit of volume and/or the layer thickness of the layer is/are selected such that it absorbs electromagnetic radiation from the wave-length spectrum of sunlight at predefinable proportions and the pro-portion of electromagnetic radiation from the wavelength spectrum of a black radiator at a temperature greater than 50° C. which is emitted is very small.2. A coating in accordance with claim 1 , characterized in that the carbon nanotubes forming the layer are arranged on the surface of the substrate irregularly and in this respect at least predominantly in a plane which is aligned in parallel with one another in parallel with the surface of the substrate or of a reflective layer formed on the surface.3. A coating in accordance with claim 1 , characterized in that the layer formed by the carbon nanotubes is covered by a protective layer which is preferably formed from an oxide claim 1 , ...

Acoustically active articles

Articles and methods of making and using the articles are provided. The articles include inorganic agglomerates having an average dimension in a range from about 50 microns to about 2 mm. The porous agglomerates each include a network of carbon or silica, and metal oxide particles embedded in the network. Some agglomerates are capable of lowering a resonant frequency of an acoustic device when the resonant frequency is in a range from about 50 Hz to about 1500 Hz.

POLYCRYSTALLINE DIAMOND COMPACTS HAVING INTERSTITIAL DIAMOND GRAINS AND METHODS OF MAKING THE SAME

Polycrystalline diamond compacts having interstitial diamonds and methods of forming polycrystalline diamond compact shaving interstitial diamonds with a quench cycle are described herein. In one embodiment, a polycrystalline diamond compact includes a substrate and a polycrystalline diamond body attached to the substrate. The polycrystalline diamond body includes a plurality of inter-bonded diamond grains that are attached to one another in an interconnected network of diamond grains and interstitial pockets between the inter-bonded diamond grains, and a plurality of interstitial diamond grains that are positioned in the interstitial pockets. Each of the plurality of interstitial diamond grains are attached to a single diamond grain of the interconnected network of diamond grains or other interstitial diamond grains. 1. A polycrystalline diamond compact comprising: a plurality of inter-bonded diamond grains that are attached to one another in an interconnected network of diamond grains and interstitial pockets between the inter-bonded diamond grains; and', 'a plurality of interstitial diamond grains that are positioned in the interstitial pockets, each of the plurality of interstitial diamond grains are attached to a single diamond grain of the interconnected network of diamond grains or other interstitial diamond grains., 'a polycrystalline diamond body comprising2. The polycrystalline diamond compact of claim 1 , wherein:a. least a portion of the interstitial pockets comprise a catalyst material positioned between the diamond grains; andthe plurality of interstitial diamond grains reduce an exposed surface area of the inter-bonded diamond grains to the catalyst material.3. The polycrystalline diamond compact of claim 1 , wherein:at least a portion of the interstitial pockets comprise a catalyst material positioned between the diamond grains; andthe polycrystalline diamond body further comprises an interstitial diamond grain that is positioned within the catalyst ...

Supercritical Fluid Production of Graphene-Based Supercapacitor Electrode from Coke or Coal

Provided is a process for producing a graphene-based supercapacitor electrode from a supply of coke or coal powder, comprising: (a) exposing this powder to a supercritical fluid for a period of time in a pressure vessel to enable penetration of the supercritical fluid into internal structure of the coke or coal; wherein the powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof; (b) rapidly depressurizing the supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of the coke or coal powder to produce isolated graphene sheets, which are dispersed in a liquid medium to produce a graphene suspension; and (c) shaping and drying the graphene suspension to form the supercapacitor electrode having a specific surface area greater than 200 m/g. 1. A process for producing a graphene-based supercapacitor electrode from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers with an interlayer spacing , said process comprising:(a) exposing said supply of coke or coal powder to a supercritical fluid at a first temperature and a first pressure for a first period of time in a pressure vessel to enable penetration of the supercritical fluid into an internal structure of the coke or coal; wherein said coke or coal powder is selected from the group consisting of petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, natural coal mineral powder, and a combination thereof;(b) rapidly depressurizing said supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of said coke or coal powder to produce isolated graphene sheets, which are dispersed in a liquid medium to produce a graphene suspension; and{'sup': '2', '(c) shaping ...

METHOD OF DEPOSITING NANOSCALE MATERIALS WITHIN A NANOFIBER NETWORK AND NETWORKED NANOFIBERS WITH COATING

Provided herein is a method of making a conductive network by combining uncoated carbon nanotubes and carbon nanotubes coated with an electroactive substance to create an electrically conductive network; and redistributing at least a portion of the electroactive substance. Also provided herein is an electrically conductive network with an active material coating; first carbon nanotubes coated with the active material coating; and second carbon nanotubes partially coated with the active material coating, wherein at least a portion of the surfaces of the second carbon nanotubes directly contact surfaces of other second carbon nanotubes without the active material coating between these second carbon nanotubes, and wherein the first carbon nanotubes and the second carbon nanotubes are entangled to form an electrically conductive network. 1. A method of making a conductive network , comprising the steps of:(a) Combining uncoated carbon nanotubes and coated carbon nanotubes coated with an electroactive substance to create an electrically conductive network; and(b) redistributing at least a portion of the electroactive substance.2. The method of claim 1 , wherein the combining uncoated carbon nanotubes and the coated carbon nanotubes coated with an electroactive substance to create an electrically conductive network comprises:entangling the uncoated carbon nanotubes and the carbon nanotubes with the electroactive substance such that the entanglement creates an electrically conductive network of uncoated carbon nanotubes entangled with coated carbon nanotubes coated with the electroactive substance.3. The method of claim 1 , wherein the electroactive substance comprises a chemically active nanoscale solid substance.4. The method of claim 1 , wherein the redistributing at least a portion of the electroactive substance comprises:removing a portion of the electroactive substance from the coated carbon nanotubes coated with the electroactive substance into a solution, and ...

METHOD OF PRODUCING NEEDLE COKE FOR LOW CTE GRAPHITE ELECTRODES

A method of producing low CTE graphite electrodes from needle coke formed from a coal tar distillate material having a relatively high initial boiling point. 1. A method of creating a low coefficient of thermal expansion graphite electrode , comprising:(a) heating a needle coke precursor comprising at least 80% coal tar distillate having a boiling point of greater than 280° C. under pressure, thereby converting 60-90% of the coal tar distillate into raw coke;(b) calcining the raw coke to create low coefficient of thermal expansion needle coke;(c) milling the needle coke;(d) mixing the milled needle coke with coal tar binder pitch to create a mix;(e) extruding the mix to form a green electrode;(f) baking the green electrode to create a baked electrode; and(g) graphitizing the baked electrode to create a low coefficient of thermal expansion graphite electrode.2. The method of wherein the mixing step contains from about 15% by weight to about 35% by weight coal tar binder pitch.3. The method of wherein the low coefficient of thermal expansion graphite electrode has a coefficient of thermal expansion of from about 0.005 ppm/° C. to about 0.150 ppm/° C.4. The method of further comprising crushing the raw coke of step (a) prior to the calcining of step (b).5. The method of wherein the coal tar distillate has a modified Conradson carbon value of at least about 1%.6. The method of wherein the pressure of step (a) is of from about 20 psig to about 100 psig.7. The method of wherein the pressure is about 50 psig.8. The method of further comprising heating the coal tar distillate of step (a) at a rate of from about 35° C. per hour to about 65° C. per hour.9. The method of further comprising holding the temperature of step (a) for from about 16 hours to about 25 hours.10. The method of wherein the crushed raw coke of step (b) is calcined to a temperature of from about 1300° C. to about 1500° C.11. The method of further comprising calcining the coal tar distillate of step (b) at ...

CHEMICAL VAPOUR INFILTRATION OR DEPOSITION PROCESS

A process for chemical vapor infiltration or deposition, includes forming pyrocarbon in the porosity of a porous substrate or on a surface of a substrate, the substrate being placed in a reaction chamber and the pyrocarbon being formed from a gas phase introduced into the reaction chamber, the gas phase including at least one pyrocarbon precursor compound and carbon dioxide. 1. A process for chemical vapor infiltration or deposition , comprising:forming pyrocarbon in a porosity of a porous substrate or on a surface of a substrate, the substrate being placed in a reaction chamber and the pyrocarbon being formed from a gas phase introduced into the reaction chamber, said gas phase comprising at least one pyrocarbon precursor compound and carbon dioxide.2. The process as claimed in claim 1 , wherein a volume content of carbon dioxide in the gas phase of less than or equal to 15% is imposed claim 1 , said content being taken at the time the gas phase is introduced into the reaction chamber.3. The process as claimed in claim 2 , wherein the volume content of carbon dioxide in the gas phase is less than or equal to 10%.4. The process as claimed in claim 3 , wherein the volume content of carbon dioxide in the gas phase is comprised between 2% and 7%.5. The process as claimed in claim 1 , wherein the pyrocarbon precursor compound is a hydrocarbon.6. The process as claimed in claim 5 , wherein the pyrocarbon precursor compound is a linear hydrocarbon.7. The process as claimed in claim 1 , wherein the pyrocarbon precursor compound is an alcohol or a polyalcohol.8. A process for manufacturing part made of composite material with a matrix at least partially of pyrocarbon claim 1 , the process comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'densifying a porous substrate forming a fibrous preform of the part to be obtained with a pyrocarbon matrix phase by chemical vapor infiltration by performing a process as claimed in .'}9. The process as claimed in claim 8 , ...

SUPERHARD CONSTRUCTIONS & METHODS OF MAKING SAME

A superhard polycrystalline construction comprises a body of polycrystalline superhard material formed of a mass of superhard grains exhibiting inter-granular bonding and defining a plurality of interstitial regions therebetween, and a non-superhard phase at least partially filling a plurality of the interstitial regions and having an associated shape factor of greater than around 0.65 and a substrate bonded to the body of superhard material along an interface, the substrate having a region adjacent the interface comprising binder material in an amount at least 5% less than the remainder of the substrate. 1. A superhard polycrystalline construction comprising:a body of polycrystalline superhard material that comprises:a mass of superhard grains exhibiting inter-granular bonding and defining a plurality of interstitial regions therebetween;a non-superhard phase at least partially filling a plurality of the interstitial regions and having an associated shape factor of greater than around 0.65; anda substrate bonded to the body of superhard material along an interface, the substrate having a region adjacent the interface comprising binder material in an amount at least 5% less than the remainder of the substrate.2. The superhard polycrystalline construction according to claim 1 , wherein the superhard grains comprise natural and/or synthetic diamond grains claim 1 , the superhard polycrystalline construction forming a polycrystalline diamond construction.3. The superhard polycrystalline construction according to claim 1 , wherein the non-superhard phase comprises a binder phase.4. (canceled)5. The superhard polycrystalline construction according to claim 1 , wherein the non-superhard phase at least partially filling a plurality of the interstitial regions has an associated shape factor of greater than around 0.7.6. The superhard polycrystalline construction according to claim 1 , wherein the non-superhard phase at least partially filling a plurality of the interstitial ...

DIAMOND COMPOSITE AND A METHOD OF MAKING A DIAMOND COMPOSITE

The present invention relates to a diamond composite comprising diamond particles embedded in a binder matrix comprising SiC and a MAX-phase, where no diamond-to-diamond bonding are present. For the MAX-phase n=1-3, M is one or more elements selected from the group Sc, Ti, Zr, Hf, V, Nb, Ta, Cr and Mo, A is one or more elements selected from the group Al, Si, P, S, Ga, Ge, As, Cd, In, Sn, Tl, and Pb and X is carbon and/or nitrogen. 1. A diamond composite comprising diamond particles embedded in a binder matrix comprising SiC and a Mn+1AXn-phase , where n=1-3 , M is one or more elements selected from the group Sc , Ti , Zr , Hf , V , Nb , Ta , Cr , and Mo , A is one or more elements selected from the group Al , Si , P , S , Ga , Ge , As , Cd , In , Sn , Tl , and Pb and X is carbon and/or nitrogen , wherein no diamond-to-diamond bonding is present.2. A diamond composite according to claim 1 , wherein the diamond particles constitute between 20 to 90 vol % of the total volume.3. A diamond composite according to claim 1 , wherein the amount of SiC in the binder is 1 to 55 vol % of the total volume.4. A diamond composite according to claim 1 , wherein the amount of Mn+1AXn-phase is 1 to 50 vol % of the total volume.5. A diamond composite according to claim 1 , wherein for the Mn+1AXn-phase claim 1 , n=1 and A is Si and/or Al.6. A diamond composite according to claim 1 , wherein for the Mn+1AXn-phase claim 1 , n=2 claim 1 , X is carbon and A is Si and/or Al.7. A diamond composite according to claim 1 , wherein for the Mn+1AXn-phase claim 1 , n=3 and A is Si and/or Al.8. A method of making a diamond composite comprising the steps of:providing diamond particles embedded in a binder matrix comprising SiC and a Mn+1AXn-phase, where n=1-3, M is one or more elements selected from the group Sc, Ti, Zr, Hf, V, Nb, Ta, Cr, and Mo, A is one or more elements selected from the group Al, Si, P, S, Ga, Ge, As, Cd, In, Sn, Tl, and Pb and X is carbon and/or nitrogen , wherein no diamond- ...

METHOD FOR REFINING METAL MELTS OR SLAGS

The present invention concerns the field of refining metal melts or slags and provides in particular a reactive material based on calcium aluminate and carbon, its process of preparation and various methods for refining metal melts using the same. 2. The method according to wherein in said material:The calcium aluminate powder has a particle size of less than 100 μm;The carbon has a particle size ranging from 20 to 50 μm.3. The method according to wherein in contact of metal melts or slags:calcium aluminate reacts with the carbon and forms calcium aluminate suboxides at a temperature of at least 1000° C.calcium and/or aluminum are deposited on the at least partially decarburized calcium aluminate zone in contact with the metal melt; anda. thin solid calcium aluminate layer is formed in situ due to the reaction of these suboxides with the oxygen of the metal melt;whereby forming an activated collector material.4. The method according to wherein the activated collector material comprises a coating layer on said substrate claim 3 , said coating layer comprising a calcium aluminate layer.5. The method according to wherein the coating layer has a thickness comprised between 200 nm and 10 μm.6. The method according to wherein said filter has a structure chosen from the group consisting in open-cell honeycomb geometry claim 1 , spaghetti filter geometry claim 1 , perforated filter geometry claim 1 , mashed fibers structure claim 1 , fibrous tissue structure claim 1 , sphere structure.7. The method of claim 1 , wherein the substrate further comprises one or more additives claim 1 , metals claim 1 , or mixtures thereof.8. The method of claim 1 , wherein the step of applying said active material as granules claim 1 , powder claim 1 , or spheres into the melt is performed through porous plugs of the vessel containing the slag or melt. The present invention concerns the field of refining metal melts or slags, in particular by separating non-metallic inclusions. Non-metallic ...

CARBON-CARBON COMPOSITES INCLUDING ISOTROPIC CARBON ENCAPSULATING LAYER AND METHODS OF FORMING THE SAME

A technique of forming a carbon-carbon composite material includes infusing a liquid carbonizable precursor into a porous preform, and the infused precursor is subsequently pyrolyzed to convert the precursor to isotropic carbon. The preform then can be densified with a densifying agent, followed by infusion of the liquid carbonizable precursor into the densified preform. In some examples, after pyrolyzing the liquid carbonizable precursor, isotropic carbon extends substantially throughout a volume of the carbon-carbon composite material. 1. A method comprising:infusing a liquid carbonizable precursor into a porous preform;pyrolyzing the infused liquid carbonizable precursor to convert the precursor to porous isotropic carbon;infusing a densifying agent into the porous preform including the porous isotropic carbon;pyrolyzing the densifying agent to form porous anisotropic carbon from the densifying agent;infusing the liquid carbonizable precursor into the porous preform including porous anisotropic carbon; andpyrolyzing the infused liquid carbonizable precursor to convert the precursor to isotropic carbon and form a carbon-carbon composite material.2. The method of claim 1 , wherein infusing the densifying agent into the porous preform including porous isotropic carbon comprises infusing the densifying agent into the porous preform including the porous isotropic carbon using at least one of resin transfer molding claim 1 , vacuum pressure infiltration claim 1 , and high pressure impregnation claim 1 , wherein the porous isotropic carbon formed by pyrolyzing the infused liquid carbonizable precursor in the porous preform provides sufficient rigidity to the porous preform to prevent delamination of the porous preform during the infusion of the densifying agent into the porous preform including the porous isotropic carbon.3. The method of claim 2 , wherein after pyrolyzing the infused liquid carbonizable precursor to convert the precursor to isotropic carbon and form a ...

POLYCRYSTALLINE DIAMOND COMPACTS HAVING LEACH DEPTHS SELECTED TO CONTROL PHYSICAL PROPERTIES AND METHODS OF FORMING SUCH COMPACTS

A method of forming a polycrystalline diamond compact includes forming a polycrystalline diamond material at a temperature and a pressure sufficient to form diamond-to-diamond bonds in the presence of a catalyst; substantially removing the catalyst from a volume of the polycrystalline diamond material from a first surface to a first leach depth; and substantially removing the catalyst from a volume of the polycrystalline diamond material from a second surface to a second, different leach depth. A polycrystalline diamond compact includes a polycrystalline diamond material having a first volume, a second volume, and a boundary between the first volume and the second volume. The first volume includes a catalyst disposed in interstitial spaces between diamond grains. The second volume is substantially free of the catalyst. The boundary's location is selected to control thermal stability and/or impact resistance. 1. A method of forming a polycrystalline diamond compact , the method comprising:forming a polycrystalline diamond material from diamond particles at a temperature and a pressure sufficient to form diamond-to-diamond bonds in the presence of a catalyst;selecting a first leach depth from a first surface of the polycrystalline diamond material to control at least one of thermal stability and impact resistance;substantially removing the catalyst from a volume of the polycrystalline diamond material from the first surface to the first leach depth;selecting a second, different leach depth from a second surface of the polycrystalline diamond material to control at least one of thermal stability and impact resistance; andsubstantially removing the catalyst from a volume of the polycrystalline diamond material from the second surface to the second leach depth.2. The method of claim 1 , wherein forming a polycrystalline diamond material comprises forming the polycrystalline diamond material on a supporting substrate.3. The method of claim 1 , wherein forming a ...

Uniformity of fiber spacing in cmc materials

A pliable tape is generally provided that includes: a plurality of fibers forming unidirectional arrays of tows encased within a matrix material, with four adjacent fibers in the tape define an interstitial spacing therebetween. The matrix material comprises filler particles dispersed between adjacent fibers in the tape. In one embodiment, the filler particles have a median particle size defining the interstitial spacing such that the interstitial spacing is about 0.75 to about 1.1 of the median particle size. In another embodiment, the filler particles have a median particle size that is related to the surface-to-surface spacing between adjacent fibers, with the ratio of the surface-to-surface spacing between adjacent fibers and the median particle size being about 0.3:1 to about 1:1. Methods are also provided for forming a ceramic matrix composite.

POLYCRYSTALLINE SUPERHARD MATERIAL AND METHOD OF FORMING

A body of polycrystalline diamond (PCD) material having a diamond content of at most 95 percent of the volume of the PCD material, a binder content of at least 5 percent of the volume of the PCD material, and comprising diamond grains having a mean diamond grain contiguity of greater than 60 percent and a standard deviation of less than 2.2 percent is disclosed. Also disclosed is a method of making such a body of polycrystalline diamond material.

NOVEL COKE WITH ADDITIVES

Coke including additives that are accumulated at the yield points or in the regions surrounded by the yield points. For homogeneous distribution, the additives are continuously dosed into the delayed coker during the filling time. The dosing can be carried out by powdery blowing with an inert gas (nitrogen) or also distributed in a slurry consisting of the reaction components and a partial flow of the coker feed (vacuum resid, pytar, decant oil or coal-tar distillates). According to an advantageous form of embodiment, the additives may optionally have a diameter of between 0.05 mm and 5 mm, preferably between 1 mm and 3 mm. Advantageously, the additives can be selected from at least one of acetylene coke, fluid coke, flexi coke, shot coke, carbon black, non-graphitisable carbons (chars), non-graphitic anthracite, silicon carbide, titanium carbide, titanium diboride or mixtures thereof. 111-. (canceled)12. A coke comprising:additives,the additives are accumulated at the yield points or in the regions surrounded by the yield points.13. The coke according to claim 12 , wherein the coke is chosen from the group consisting of petroleum coke claim 12 , coal-tar pitch coke or from the residues of coal gasification claim 12 , coal hydrogenation or also the cokes obtained from Fischer-Tropsch synthesis or from a petrol/coal-tar pitch mixture obtained from the mixture of petrol and coal-tar pitch residues claim 12 , or any mixture of the named cokes.14. The coke according to claim 12 , wherein the additives are accumulated at the yield points or are embedded in the regions surrounded by the yield points or are both accumulated at the yield points and embedded in the regions surrounded by the yield points.15. The coke according to claim 14 , wherein the additives are selected from the group consisting of acetylene coke claim 14 , fluid coke claim 14 , flexi coke claim 14 , shot coke claim 14 , carbon black claim 14 , non-graphitisable carbons (chars) claim 14 , non-graphitic ...

SUPERHARD CONSTRUCTIONS AND METHODS OF MAKING SAME

A superhard polycrystalline construction () comprises a first region () comprising a body of thermally stable polycrystalline superhard material having an exposed surface forming a working surface (), and a peripheral side edge (), a second region () forming a substrate to the first region, and a third region () at least partially interposed between the first and second regions wherein the third region comprises a material more acid resistant than polycrystalline diamond material having a binder-catalyst phase comprising cobalt, and/or more acid resistant than cemented carbide material. 1. A superhard polycrystalline construction comprising:a first region comprising a body of thermally stable polycrystalline superhard material having an exposed surface forming a working surface, and a peripheral side edge;a second region forming a substrate to the first region; anda third region at least partially interposed between the first and second regions; wherein:the third region comprises a material more acid resistant than polycrystalline diamond material having a binder-catalyst phase comprising cobalt, and/or more acid resistant than cemented carbide material.2. The super hard polycrystalline construction as claimed in claim 1 , wherein the third region extends to and forms part of the working surface.3. The superhard polycrystalline construction of any one of the preceding claims claim 1 , wherein the material of the third region has a fracture toughness of between around 4 MPa√m to around 15 MPa√m.4. The superhard polycrystalline construction of any one of the preceding claims claim 1 , wherein the third region has an outer peripheral surface claim 1 , the first region extending around at least a portion of the peripheral outer surface of the third region.5. The super hard polycrystalline construction as claimed in any one of the preceding claims claim 1 , wherein the first region comprises one or more segments located in one or more recesses in the third region.6. The ...

Method of Producing Integral 3D Humic Acid-Carbon Hybrid Foam

Provided is a method of producing an integral 3D humic acid-carbon hybrid foam, comprising: (A) forming a solid shape of humic acid-polymer particle mixture; and (B) pyrolyzing the solid shape of humic acid-polymer particle mixture to thermally reduce humic acid into reduced humic acid sheets and thermally convert polymer into pores and carbon or graphite that bonds the reduced humic acid sheets to form the integral 3D humic acid-carbon hybrid foam. 1. A method of producing an integral 3D humic acid-carbon hybrid foam , said method comprising:(A) forming a solid shape of humic acid-polymer particle mixture; and(B) pyrolyzing said solid shape of humic acid-polymer particle mixture to thermally reduce said humic acid into reduced humic acid sheets and thermally convert said polymer into pores and carbon or graphite that bonds said reduced humic acid sheets to form said integral 3D humic acid-carbon hybrid foam.2. The method of claim 1 , wherein said step (A) comprises: (i) dispersing humic acid in water or a solvent to form a suspension and dispersing multiple polymer particles in said suspension to form a slurry; and (ii) dispensing said slurry and removing said water or solvent to form a solid shape of humic acid-polymer particle mixture claim 1 , containing polymer particles being wrapped around or fully coated or embraced with humic acid.3. The method of claim 1 , wherein said polymer particles include plastic or rubber beads claim 1 , pellets claim 1 , spheres claim 1 , wires claim 1 , fibers claim 1 , filaments claim 1 , discs claim 1 , ribbons claim 1 , or rods claim 1 , having a diameter or thickness from 10 nm to 10 mm.4. The method of claim 3 , wherein said diameter or thickness is from 100 nm to 1 mm.5. The method of claim 1 , wherein said solid shape of humic acid-polymer particle mixture contains polymer particles that are wrapped around or coated by humic acid.6. The method of claim 1 , wherein said integral 3D humic acid-carbon hybrid foam is in a film ...

COMPOSITION AND METHOD TO FORM DISPLACEMENTS FOR USE IN METAL CASTING

A method to form a displacement includes disposing a powder blend (comprising a plurality of ground ceramic particles and a plurality of ground resin particles) into a mold, densifying the powder blend while in the mold, heating the mold to form a first displacement, impregnating said first displacement with a polymer precursor compound to form a second displacement, and heating the second displacement to form a third displacement. 1. A method for forming a displacement for a metallic casting , the method comprising:disposing a powder blend into a mold, the powder blend comprising a plurality of ground ceramic particles and a plurality of ground resin particles;densifying said powder blend while in said mold;heating said mold to form a first displacement;impregnating said first displacement with a polymer precursor compound to form a second displacement; andheating said second displacement at about 1000° C. for about 24 hours to form a third displacement.2. The method of claim 1 , wherein said impregnating comprises:immersing said first displacement in a liquid mixture comprising said polymer precursor compound;monitoring a weight increase of said first displacement;when a weight of said first displacement no longer increases with time, determining that said second displacement is formed.3. The method of claim 1 , further comprising:heating said first displacement at about 1000° C. for about 24 hours before the impregnating said first displacement with the polymer precursor compound to form the second displacement.4. The method of claim 1 , wherein the disposing includes disposing the power blend comprising the plurality of ground ceramic particles with a maximum dimension claim 1 , of a ground ceramic particle claim 1 , of less than about 150 microns.5. The method of claim 1 , wherein the disposing includes disposing the power blend comprising the plurality of ground resin particles with a maximum dimension claim 1 , of a ground resin particle claim 1 , of less ...

Method for manufacturing graphitic sheet

A method for manufacturing a graphitic sheet is used to obtain the graphitic sheet with similar characteristics to graphene. The method includes forming an ocatadecyltrichlorosilane (OTS) layer on a substrate to obtain a composite. The composite is annealed at 250-400° C. for 30-90 minutes, forming the graphitic sheet on the substrate via self-assembly of ocatadecyltrichlorosilane (OTS) in the OTS layer. The annealed composite is immersed in water, followed by being sonicated for 2 minutes with a frequency of 40 kHz and a power output of 200 W, to separate the graphitic sheet from the substrate.

COMPOSITE SINTERED BODY

A composite sintered body includes a diamond phase and a non-diamond carbon phase. A non-diamond carbon phase occupancy rate is higher than 0% and not higher than 30%. The non-diamond carbon phase occupancy rate is a percentage of an area of the non-diamond carbon phase to a total area of one arbitrarily specified cross section of the composite sintered body. As a result, there is provided a high wear-resistant, high local wear-resistant and high chipping-resistant diamond-containing composite sintered body suitably used as a material for a wear-resistant tool, a cutting tool and the like. 1. A composite sintered body comprising a diamond phase and a non-diamond carbon phase ,a non-diamond carbon phase occupancy rate being higher than 0% and not higher than 30%, the non-diamond carbon phase occupancy rate being a percentage of an area of the non-diamond carbon phase to a total area of one arbitrarily specified cross section of the composite sintered body.2. The composite sintered body according to claim 1 , whereinan average particle size of sintered diamond particles forming the diamond phase is not larger than 1000 nm.3. The composite sintered body according to claim 1 , whereinan average particle size of sintered non-diamond carbon particles forming the non-diamond carbon phase is not larger than 2000 nm.4. The composite sintered body according to claim 1 , whereina Knoop hardness of the composite sintered body is not lower than 50 GPa. The present invention relates to a diamond-containing composite sintered body. Specifically, the present invention relates to a diamond-containing composite sintered body suitably used as a material for a wear-resistant tool, a cutting tool and the like.Diamond is a highest hardness substance among the substances existing on earth, and thus, a sintered body including diamond has been used as a material for a wear-resistant tool, a cutting tool and the like.Japanese Patent Laying-Open No. 2003-292397 (PTD 1) discloses a diamond ...

THERMOSET CERAMIC COMPOSITIONS, INORGANIC POLYMER COATINGS, INORGANIC POLYMER MOLD TOOLING, INORGANIC POLYMER HYDRAULIC FRACKING PROPPANTS, METHODS OF PREPARATION AND APPLICATIONS THERFORE

Thermoset ceramic compositions and a method of preparation of such compositions. The compositions are advanced organic/inorganic hybrid composite polymer ceramic alloys. The material combine strength, hardness and high temperature performance of technical ceramics with the strength, ductility, thermal shock resistance, density, and easy processing of the polymer. Consisting of a branched backbone of silicon, alumina, and carbon, the material undergoes sintering at 7 to 300 centigrade for 2 to 94 hours from water at a pH between 0 to 14, humidity of 0 to 100%, with or without vaporous solvents. 1. A composition of matter comprising:a polymer of aluminum, silicon, carbon, and oxygen wherein the aluminum, silicon, carbon, and oxygen are all in the polymer chain backbone.2. A composition of matter provided by the incipient materials:a. aluminum oxide,b. silicon oxide,c. carbon, and, a source ofd. divalent cations.3. A composition of matter as claimed in wherein the composition of matter is a gel.4. The composition as claimed in wherein the divalent cations are selected from the group consisting of calcium claim 2 , and magnesium.5. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , metal claim 2 , is added.6. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , fibers are added.7. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , other metallic oxides are added.8. A method of preparation of a composition of claim 1 , said method comprising:a. providing a mixture of aluminum oxide and silicon oxide; i. water,', {'sup': '−', 'ii. a source of OH,'}, 'iii. carbon, and,', 'iv. a source of divalent cations;, 'b. providing a mixture, having a basic pH, in a slurry form, of'}c. mixing A. and B. together using shear force to form a stiff gel;d. exposing the product of C, to a temperature in the range of 140° F. to 250° F. for a period of time to provide a thermoset ceramic.9. The method as claimed in ...

METHOD OF DEPOSITING NANOSCALE MATERIALS WITHIN A NANOFIBER NETWORK AND NETWORKED NANOFIBERS WITH COATING

Provided herein is a method of manufacturing a nanoscale coated network, which includes providing nanofibers, capable of forming a network in the presence of a liquid vehicle and providing a nanoscale solid substance in the presence of the liquid vehicle. The method may also include forming a network of the nanofibers and the nanoscale solid substance and redistributing at least a portion of the nanoscale solid substance within the network to produce a network of nanofibers coated with the nanoscale solid substance. Also provided herein is a nanoscale coated network with an active material coating that is redistributed to cover and electrochemically isolate the network from materials outside the network. 18-. (canceled)9. A method of coating a network , comprising:providing a network of nanofibers in the presence of a liquid vehicle;providing a nanoscale solid substance on or in the network; andredistributing at least a portion of the nanoscale solid substance within the network.10. The method of claim 9 , wherein the providing the network of nanofibers comprises providing a network of carbon nanotubes.11. The method of claim 9 , wherein the providing the network of nanofibers comprises: providing a dispersion of carbon nanotubes in a liquid vehicle; and', 'removing the liquid vehicle to provide a conductive network of carbon nanotubes as the network of nanofibers., 'forming a conductive network of carbon nanotubes by12. The method of claim 9 , coating one or more carbon nanotubes with nanoscale solid substance to form one or more coated carbon nanotubes;', 'providing non-coated carbon nanotubes, and, 'providing a conductive network of one or more carbon nanotubes in electrical contact with one or more other carbon nanotubes comprises, 'wherein the providing the network of nanofibers comprises 'redistributing at least a portion of the nanoscale solid substance by moving nanoscale solid substance from the one or more coated carbon nanotubes to the non-coated carbon ...

SYNTACTIC INSULATOR WITH CO-SHRINKING FILLERS

A thermally-insulating composite material with co-shrinkage in the form of an insulating material formed by the inclusion of microballoons in a matrix material such that the microballoons and the matrix material exhibit co-shrinkage upon processing. The thermally-insulating composite material can be formed by a variety of microballoon-matrix material combinations such as polymer microballoons in a preceramic matrix material. The matrix materials generally contain fine rigid fillers. 1. A thermally-insulating composite material formed from a filler in a polymer material , said filler including a shrinkable filler , said shrinkable filler exhibiting co-shrinkage with said polymer material , said polymer material including a thermosetting , curable polymer , said shrinkable filler including microspheres , said microspheres formed of a material that co-shrinks with said polymer material during pyrolization and/or curing of said polymer material , said filler constituting 1-74 vol. % of said thermally-insulating composite material prior to said pyrolization and/or curing of said polymer material , said polymer material constituting 20-99 vol. % of said thermally-insulating composite material prior to said pyrolization , and/or curing of said polymer material , said thermally-insulating composite material having a lower thermal conductivity than said polymer material , said polymer material forms a solid polymer and/or ceramic matrix system upon curing , pyrolization and/or carbonization.2. The thermally-insulating composite material as defined in claim 1 , wherein matrix pores formed at least partially from said filler constitute about 1-74 vol. % of said thermally-insulating composite material.3. The thermally-insulating composite material as defined in claim 1 , wherein said filler includes non-shrinkable fillers claim 1 , said non-shrinkable fillers selected from the group consisting of fibers claim 1 , whiskers claim 1 , nanofibers claim 1 , and nanotubes.4. The ...

Pigment Material and Metal Oxide Mixed Adhesive and Colorable Heat Ray Screening Carbon Ceramic Film using the Same

The present disclosure relates to an adhesive including a functional coating layer formed by mixing three or more materials such as carbon, ceramics, and a transparent pressure sensitive adhesive (PSA) at a predetermined ratio, in which a pigment material and a metal oxide are mixed, and a colorable heat ray screening carbon-ceramic film using the adhesive. According to one embodiment, the adhesive includes 20 to 90 wt % of a pigment material adhesive and 10 to 80 wt % of a metal oxide adhesive with respect to the total weight of the adhesive. 1. An adhesive in which a pigment material and a metal oxide are mixed , the adhesive comprising: 20 to 90 wt % of a pigment material adhesive and 10 to 80 wt % of a metal oxide adhesive with respect to a total weight of the adhesive in which the pigment material and the metal oxide are mixed;wherein the pigment material adhesive comprises 1 to 50 wt % of a pigment dispersion and 50 to 99 wt % of a glue material with respect to a total weight of the pigment material adhesive; andthe metal oxide adhesive comprises 1 to 60 wt % of a metal oxide dispersion and 40 to 99 wt % of the glue material with respect to a total weight of the metal oxide adhesive.2. The adhesive of claim 1 , wherein the pigment dispersion comprises 1 to 10 wt % of carbon black claim 1 , 1 to 10 wt % of a pigment claim 1 , 5 to 20 wt % of a dispersant claim 1 , and 65 to 85 wt % of an organic solvent with respect to a total weight of the pigment dispersion.3. The adhesive of claim 2 , wherein the metal oxide dispersion comprises 1 to 40 wt % of the metal oxide claim 2 , 5 to 30 wt % of a dispersant claim 2 , and 30 to 85 wt % of an organic solvent with respect to a total weight of the metal oxide dispersion4. The adhesive of claim 1 , wherein for the pigment claim 1 , at least one or more members are selected from the group consisting of Phthalocyanine Blue and Vermilion Red.5. The adhesive of claim 4 , wherein the pigment has a particle size of 5 to 100 nm. ...

METHODS OF SELECTIVE NANOPARTICLE DIFFUSION INTO A POLYCRYSTALLINE DIAMOND BODY AND SO FORMED POLYCRYSTALLINE DIAMOND COMPACTS

Embodiments of the invention relate to polycrystalline diamond bodies having nanoparticles disposed in a region therein, and methods of fabricating the same. 1. A method of forming a polycrystalline diamond compact , comprising:subjecting a plurality of diamond particles to a first high-pressure/high-temperature process in the presence of a metal-solvent catalyst to form a polycrystalline diamond body, the polycrystalline diamond body including a plurality of diamond grains exhibiting diamond-to-diamond bonding therebetween defining a plurality of interstitial spaces including the metal-solvent catalyst therein;leaching the polycrystalline diamond body to at least partially remove the metal-solvent catalyst from at least a portion of the plurality of interstitial spaces to form an at least partially leached polycrystalline diamond body having an upper surface and a back surface spaced therefrom;causing at least a portion of the plurality of interstitial spaces of the at least partially leached polycrystalline diamond body to be occupied by a quantity of nanoparticles;bonding the at least partially leached and nanoparticle-containing polycrystalline diamond body to a substrate by subjecting the substrate having a constituent infiltrant disposed therein and the at least partially leached and nanoparticle containing polycrystalline diamond body to a second high-pressure/high-temperature process effective to infiltrate the at least partially leached and nanoparticle-containing polycrystalline diamond body with the constituent infiltrant from the substrate.2. The method of claim 1 , wherein causing at least a portion of the plurality of interstitial spaces of the at least partially leached polycrystalline diamond body to be occupied by a quantity of nanoparticles includes causing the at least partially leached polycrystalline diamond body to be occupied by a quantity nanoparticles from the upper surface to an intermediate depth therein.3. The method of claim 1 , wherein ...

INFILTRATION OF POROUS STRUCTURES WITH PARTICLES

A method of making a particulate infiltrated porous body, including the steps of preparing a suspension of particles of a first composition in a liquid medium, immersing a porous body of a second composition in the suspension, infiltrating the porous body with particles of the first composition with the suspension to yield an infiltrated body, and selectively removing the liquid medium from the infiltrated body while leaving behind the particles of the first composition to yield a particulate-infused body. The porous body of the second composition is not wet by the liquid medium. 1. A method of making a particulate infiltrated porous body , comprising:a) preparing a suspension of particles of a first composition in a liquid medium;b) immersing a porous body of a second composition in the suspension;c) infiltrating the porous body with particles of the first composition with the suspension to yield an infiltrated body;d) selectively removing the liquid medium from the infiltrated body while leaving behind the particles of the first composition to yield a particulate-infused body;wherein the porous body of the second composition is not wet by the liquid medium; andwherein during step c) the suspension is pressurized.2. The method of and further comprising:e) before b), evacuating the porous body.3. The method of and further comprising:f) calcining the particulate infused body.4. The method of wherein the particles are vitreous.5. The method of wherein the suspension includes particles of a third composition.6. The method of and further comprising:g) calcining the particulate infused body to react particles of the first composition with particles of the third composition to yield particles of a fourth composition.7. The method of wherein the particulate-infused body has a core portion substantially free of particles.8. The method of wherein particles are homogeneously distributed throughout the particulate-infused body.9. A method of infusing particles into a porous ...

GRAPHENE REINFORCED MATERIALS AND RELATED METHODS OF MANUFACTURE

Graphene reinforced materials and related methods of manufacture are provided. The graphene reinforced materials include graphene sheet or scroll, graphene-polymer sheet or scroll, and graphene-carbon sheet or scroll, each having material properties that are attractive across a broad range of applications and industries. The graphene reinforced materials generally include monolayer or multilayer graphene that is synthesized by annealing a catalyst substrate within a CVD chamber, introducing a hydrocarbon gas as a carbon source with the CVD chamber to form a layer of graphene on the catalyst substrate, detaching the catalyst substrate from the layer of graphene, and rolling the layer of graphene onto itself to form a scroll, optionally with the addition of a polymer layer or carbonized layer on the graphene layer. 1. A graphene-reinforced article comprising:a sheet material having a first major surface opposite a second major surface; anda graphene layer joined to at least one of the first major surface and the second major surface of the sheet material, wherein the graphene layer and the sheet material are rolled to form a multi-walled cylindrical scroll having a spiral cross-section, the cylindrical scroll having a yield tensile strength greater than 1 GPa.2. The graphene-reinforced article of wherein the sheet material includes a polymer selected from the group consisting of lignin claim 1 , polyacrylonitrile claim 1 , polymethyl methacrylate claim 1 , polystyrene claim 1 , polycarbonbate claim 1 , polyimides claim 1 , polypropylene claim 1 , polyethylene terephthalate claim 1 , and polyvinyl chloride.3. The graphene-reinforced article of wherein the polymer is carbonized.4. The graphene reinforced article of wherein the graphene layer is multi-layer graphene.5. The graphene-reinforced article of further including a metal substrate joined to a surface of the graphene layer opposite of the sheet material.6. The graphene-reinforced article of wherein the metal ...

SPARK PLASMA SINTERING METHODS FOR FABRICATING DENSE GRAPHITE

Various embodiments of the disclosure provide methods using spark plasma sintering (SPS) at moderate temperatures and moderate pressures to fabricate high-density graphite material. The moderate temperatures may be temperatures not exceeding about 1200° C. The moderate pressures may be pressures not exceeding about 300 MPa. The high density exhibited by the resulting, sintered, high-density graphite material may be greater than about 1.75 g/cm(e.g., greater than about 2.0 g/cm). 1. A method for fabricating a high-density graphite material , the method comprising subjecting a raw material comprising graphite to an electrical current , a temperature not exceeding about 1200° C. , and a pressure not exceeding about 300 MPa to sinter the raw material into a high-density graphite material exhibiting a density of greater than 1.75 g/cm.2. The method of claim 1 , further comprising selecting the raw material to comprise the graphite in powder form.3. The method of claim 1 , further comprising selecting the raw material to comprise graphite in natural flake form.4. The method of claim 1 , further comprising fabricating the high-density graphite material to exhibit a density of greater than 2.0 g/cm.5. The method of claim 4 , further comprising fabricating the high-density graphite material to define a graphite structure with a greatest outer dimension of at least 5 mm.6. The method of claim 4 , further comprising fabricating the high-density graphite material to define a graphite structure with a greatest outer dimension of at least 50 mm.7. The method of claim 1 , further comprising claim 1 , prior to the subjecting claim 1 , providing a die defining an opening and inserting the raw material in the opening of the die.8. The method of claim 7 , wherein providing the die comprises providing a die comprising tungsten carbide.9. The method of claim 1 , further comprising claim 1 , prior to the subjecting claim 1 , compacting the raw material.10. The method of claim 1 , further ...

THERMOSET CERAMIC COMPOSITIONS, INORGANIC POLYMER COATINGS, INORGANIC POLYMER MOLD TOOLING, INORGANIC POLYMER HYDRAULIC FRACKING PROPPANTS, METHODS OF PREPARATION AND APPLICATIONS THEREFORE

Thermoset ceramic compositions and a method of preparation of such compositions. The compositions are advanced organic/inorganic hybrid composite polymer ceramic alloys. The material combines strength, hardness and high temperature performance of technical ceramics with the strength, ductility, thermal shock resistance, density, and easy processing of the polymer. Consisting of a branched backbone of silicon, and alumina, with highly coordinated Si—O—Si or Al—O—Al bonds, the material undergoes sintering at 7 to 300 centigrade for 2 to 94 hours from water at a pH between 0 to 14, humidity of 0 to 100%, with or without vaporous solvents. 1. A composition of matter provided by the incipient materialsa) aluminum oxide,b) silicon oxide,c) solvent, and a source ofd) divalent cations.2. A composition of matter as claimed in wherein the composition of matter is a gel.3. The composition as claimed in wherein the divalent cations are selected from the group consisting of calcium claim 1 , and magnesium.4. A composition of matter as claimed in claim 2 , wherein claim 2 , in addition claim 2 , fibers are added.5. A method of preparation of composition of claim 1 , said method comprising:a) providing a mixture of aluminum oxide and silicon oxide; i. water,', 'ii. a source of OH,', 'iii. a solvent, and,', 'iv. a source of divalent cations;, 'b) providing a mixture, having a basic pH, in a slurry form, ofc) mixing A. and B.;d) exposing the product of C. to a temperature in the range of 160° F. to 250° F. for a period of time to provide a thermoset ceramic.6. The method as claimed in wherein the temperature range is from 175° F. to 225° F.7. The method as claimed in wherein the time period for heating is 2 to 6 hours.8. A product when prepared by the method as claimed in .9. A solid substrate when coated with a composition as claimed in .10. A composition of matter consisting of amorphous polymer comprising metal carbon bonds and metal oxide bonds.11. A composition as claimed in ...

SHAPING EQUIPMENT AND FACILITY FOR GAS-PHASE CHEMICAL INFILTRATION OF FIBROUS PREFORMS

A shaping tooling for chemical vapor infiltration of a fiber preform includes a structural enclosure formed by supports each provided with a multiply-perforated zone. Each of the supports has in its inside face an uncased zone that includes the multiply-perforated zone. The shaping tooling further includes first and second shaping mold functional elements, each present in a respective one of the uncased zones of the support. Each shaping mold functional element has a first face of a determined shape corresponding to the shape of the part that is to be made and a second face that is held facing the inside face of a support. Each functional element has a plurality of perforations and presents a number of perforations, a size of perforations, or a shape of perforations that differs from the number, the size, or the shape of the perforations present in the facing support. 1. Shaping tooling for chemical vapor infiltration of a fiber preform , the tooling comprising a structural enclosure formed by at least a first support having a first multiply-perforated zone and a second support having a second multiply-perforated zone , the first and second supports being held one against the other ,wherein the first support includes on its inside face a first uncased zone including the first multiply-perforated zone, wherein the second support includes in its inside face a second uncased zone including the second multiply-perforated zone, and wherein the shaping tooling further comprises at least first and second shaping mold functional elements present respectively in the first and second uncased zones of the first and second supports, each shaping mold functional element having a first face of a determined shape corresponding to a shape of the part that is to be made, and a second face held facing the inside face of a support, each shaping mold functional element having a plurality of perforations and presenting at least a number of perforations, a size of perforations, or a ...

SUPERHARD PCD CONSTRUCTIONS AND METHODS OF MAKING SAME

A polycrystalline super hard construction comprises a body of polycrystalline diamond (PCD) material and a plurality of interstitial regions between inter-bonded diamond grains forming the polycrystalline diamond material. The body of PCD material comprises a working surface positioned along an outside portion of the body, and a first region adjacent the working surface, the first region being a thermally stable region. The first region and/or a further region and/or the body of PCD material has/have an average oxygen content of less than around 300 ppm. A method of forming such a construction is also disclosed. 1. A polycrystalline super hard construction comprising a body of polycrystalline diamond (PCD) material and a plurality of interstitial regions between inter-bonded diamond grains forming the polycrystalline diamond material; the body of PCD material comprising:a working surface positioned along an outside portion of the body;a first region adjacent the working surface, the first region being a thermally stable region; whereinthe first region and/or a further region and/or the body of PCD material has/have an average oxygen content of less than around 300 ppm.2. The polycrystalline super hard construction of claim 1 , wherein the first region is substantially free of a solvent/catalysing material for diamond.3. The polycrystalline super hard construction of claim 1 , further comprising the further region claim 1 , the further region being remote from the working surface and comprising solvent/catalysing material in a plurality of the interstitial regions; wherein the oxygen content of the further region is less than around 300 ppm.4. The polycrystalline super hard construction of claim 1 , wherein the thermally stable region and/or a further region and/or the body of PCD material has/have an average oxygen content of between around 10 ppm to around 300 ppm.5. The polycrystalline super hard construction of claim 1 , wherein the thermally stable region and/or ...

RHENIUM-METAL CARBIDE-GRAPHITE ARTICLE AND METHOD

A graphite-metal carbide-rhenium article of manufacture is provided, which is suitable for use as a component in the hot zone of a rocket motor at operating temperatures in excess of approximately 3,000 degrees Celsius. One side of the metal carbide is chemically bonded to the surface of the graphite, and the rhenium containing protective coating is mechanically bonded to the other side of the metal carbide. Rhenium forms a solid solution with carbon at elevated temperatures. The metal carbide interlayer serves as a diffusion barrier to prevent carbon from migrating into contact with the rhenium containing protective coating. The metal carbide is formed by a conversion process wherein a refractory metal carbide former is allowed to react with carbon in the surface of the graphite. This structure is lighter and less expensive than corresponding solid rhenium components. 114-: (canceled)15: A method of manufacturing an article comprising:selecting a graphite substrate, said graphite substrate having a predetermined configuration, a surface and a graphite coefficient of thermal expansion;{'sup': '−6', 'forming a diffusion barrier coating comprising refractory metal carbide chemically bonded to said graphite substrate by allowing a reactive form of said refractory metal to react with carbon in said surface, said diffusion barrier coating having a carbide coefficient of thermal expansion, and a carbon diffusion coefficient of less than approximately 1 times 10centimeters squared per second at a temperature of approximately 2,500 degrees Kelvin; and'}depositing a protective coating comprising rhenium on said diffusion barrier coating, and allowing said protective coating to mechanically bond to said diffusion barrier coating, said protective coating having a rhenium coefficient of thermal expansion, the largest of said graphite, carbide, and rhenium coefficients of thermal expansion being no more than approximately 30 percent larger than the smallest of said graphite, ...

Layered carbon fiber preform

A preform for a carbon-carbon composite including a plurality of fibrous layers superposed and needled-punched together. Each fibrous layer of the plurality of fibrous layers includes web fibers and tow fibers that each include at least one of carbon fibers or carbon-precursor fibers. The plurality of fibrous layers includes a first, a second, and a third fibrous layer, the third fibrous layer positioned between the first and the second fibrous layers. The third fibrous layer includes at least one of a ratio of web fibers to tow fibers that is less than a ratio of web fibers to tow fibers of the first fibrous layer, an areal weight that is greater than an areal weight of the first fibrous layer, or a pre-needled thickness that is greater than a pre-needled thickness the first fibrous layer.

MODIFICATION OF CONTINUOUS CARBON FIBERS DURING MANUFACTURING FOR COMPOSITES HAVING ENHANCED MOLDABILITY

Methods of producing continuous carbon fibers for composites having enhanced moldability are provided. Discrete regions are introduced into a continuous precursor fiber comprising an acrylic polymer material, such as polyacrylonitrile (PAN) during carbon fiber manufacture. Laser energy may be applied to the precursor fiber while it is in an oven or furnace to create heterogeneous fibers with discrete regions where laser energy is applied. In other aspects, mechanical pressure may be intermittently applied to create the discrete regions. After the continuous precursor fiber is fully heated for carbonization and/or graphitization, the precursor forms a continuous carbon fiber having a plurality of discrete weak regions. These relatively weak regions provide noncontiguous break points that reduce stiffness and improve moldability for carbon fiber polymeric composites, while retaining high strength levels. Carbon fiber polymeric composites incorporating continuous carbon fibers having the plurality of discrete noncontiguous weak regions are also provided. 1. A method of manufacturing a continuous carbon fiber for use in composites having enhanced moldability , the method comprising:introducing a continuous precursor fiber comprising a polymer material into a heated environment; anddirecting laser energy towards a plurality of discrete target regions of the continuous precursor fiber while in the heated environment to create a continuous carbon fiber having a plurality of discrete weak regions corresponding to the plurality of discrete target regions.2. The method of claim 1 , wherein the heated environment is an oxidation oven or oxidation furnace for thermally stabilizing the continuous carbon fiber.3. The method of claim 2 , wherein the oxidation oven has a temperature of greater than or equal to about 200° C. to less than or equal to about 300° C.4. The method of claim 1 , wherein the heated environment is a carbonization oven or carbonization furnace for carbonizing ...

POLYCRYSTALLINE DIAMOND COMPACTS, METHODS OF FORMING SAME, AND EARTH-BORING TOOLS

A method of forming a polycrystalline diamond compact comprises providing metallized diamond particles including diamond particles including nanograins of a sweep catalyst secured thereto, the sweep catalyst comprising at least one of tungsten and tungsten carbide and constituting between about 0.01 weight percent and about 1.0 weight percent of the metallized diamond particles and placing the metallized diamond particles and a metal solvent catalyst in a container. The metallized diamond particles are subjected to a high-temperature, high-pressure process in the presence of the metal solvent catalyst to form a polycrystalline diamond material having inter-bonded diamond grains and nanograins of tungsten carbide, the nanograins of tungsten carbide covering less than about twenty percent of a surface area of the inter-bonded diamond grains. Polycrystalline diamond compacts and earth-boring tools including the polycrystalline diamond compacts are also disclosed. 1. A method of forming a polycrystalline diamond compact , the method comprising:providing metallized diamond particles comprising diamond particles including nanograins of a sweep catalyst secured thereto, the sweep catalyst comprising at least one of tungsten and tungsten carbide and constituting between about 0.01 weight percent and about 1.0 weight percent of the metallized diamond particles;placing the metallized diamond particles and a metal solvent catalyst in a container; andsubjecting the metallized diamond particles to a high-temperature, high-pressure process in the presence of the metal solvent catalyst to form a polycrystalline diamond material having inter-bonded diamond grains and nanograins of tungsten carbide, the nanograins of tungsten carbide covering less than about twenty percent of a surface area of the inter-bonded diamond grains.2. The method of claim 1 , wherein placing the metallized diamond particles and a metal solvent catalyst in a container further comprises placing the metallized ...

Carbon membrane, method for manufacturing carbon membrane, and carbon membrane filter

There is disclosed a method for manufacturing a carbon membrane in which a phenolic hydroxyl group is 10,000 ppm or less and whose separating function does not easily deteriorate even after exposure to acidic conditions. The method for manufacturing the carbon membrane has a drying step of drying a resin solution membrane including a phenol resin formed on a substrate; and a carbon membrane preparing step of heating the dried resin solution membrane at 600 to 900° C. in a vacuum or at 650 to 900° C. in a nitrogen atmosphere to carbonize the membrane, thereby obtaining the carbon membrane in which the concentration of the phenolic hydroxyl group is 10,000 ppm or less.

ELECTRIC CABLE, CONDUCTOR, HEATING ELEMENT, METHOD FOR PRODUCING CONDUCTOR AND HEATING ELEMENT, AND HEATING DEVICE USING HEATING ELEMENT

A heating element is used, a periphery of the heating element is covered with a net-shaped conductor, the conductor and a carbon fiber bundle are electrically connected with a connecting tool at one end of the heating element, a periphery of the conductor is covered with an outer skin having flexibility, thermal conductivity and an insulating property, and the other end of the heating element is provided with a power supply terminal configured to supply power. 1. A heating element comprising:a carbide obtained by carbonizing a vegetable material containing silicon, carbon fibers each of which is continuous and obtained by mixing and spinning the carbide and resin;a carbon fiber bundle formed by bundling up the carbon fibers; anda heating unit configured to store the carbon fiber bundle in a tube having flexibility.2. The heating element according to claim 1 , wherein the carbide contains silicon in a weight ratio of 18 wt % to 35 wt %.3. A heating device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the heating element according to ;'}a conductor which has a net shape and covers a periphery of the heating element;the conductor being electrically connected to the carbon fiber bundle with a connecting tool at one end of the heating element;an outer skin which has flexibility, thermal conductivity and an insulating property and covers a periphery of the conductor; anda power supply terminal which is provided at another end of the heating element and configured to supply power.4. The heating device according to claim 3 , wherein an air layer is provided in addition to the conductor between the tube and the outer skin.5. A method for producing a heating element comprising:a pretreatment process of drying and pulverizing a vegetable material to obtain a carbon source;a carbonization process of carbonizing the carbon source to obtain a carbide, the carbonization process including a heating process of supplying an inert gas into a chamber and heating the ...

Reactive material based on calcium aluminate and carbon, its process of preparation and its uses for refining metal melts or slags

In the field of refining metal melts or slags there is disclosed in particular a reactive material based on calcium aluminate and carbon, its process of preparation and various methods for refining metal melts using the same.

SILICON PARTICLES FOR BATTERY ELECTRODES

Silicon particles for active materials and electro-chemical cells are provided. The active materials comprising silicon particles described herein can be utilized as an electrode material for a battery. In certain embodiments, the composite material includes greater than 0% and less than about 90% by weight of silicon particles. The silicon particles have an average particle size between about 0.1 μm and about 30 μm and a surface including nanometer-sized features. The composite material also includes greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases is a substantially continuous phase. 1. A method of forming a composite material , the method comprising:providing a mixture comprising a precursor and silicon particles; andpyrolysing the mixture to convert the precursor into one or more types of carbon phases to form the composite material,wherein at least one of the one or more types of carbon phases comprises a continuous phase that holds the composite material together such that the silicon particles are distributed throughout the composite material, andwherein the composite material comprises a material including silicon and carbon between the silicon particles and the one or more types of carbon phases.2. The method of claim 1 , wherein the material including silicon and carbon comprises silicon carbide.3. The method of claim 1 , wherein providing the mixture comprises providing a mixture comprising greater than 0% to about 90% by weight of the silicon particles claim 1 , and about 5% to about 80% by weight of the precursor.4. The method of claim 1 , wherein providing the mixture comprises providing conductive particles in the mixture.5. The method of claim 1 , wherein providing the mixture comprises providing metal particles in the mixture.6. The method of claim 1 , wherein the silicon particles are homogeneously distributed throughout the composite material.7. The ...

Coatings for glass shaping molds and molds comprising the same

Precision glass molds are described, which are formed by coating a mold made from high purity, fine grain sized graphite, with a coating including titanium. In various implementations, the titanium coating is overcoated with yttria (Y 2 O 3 ) to provide a high precision glass mold of superior performance character. The resultant glass molds can be used to form glass articles having a highly smooth finish, for high precision applications such as consumer electronic device applications, medical instruments, and optical devices. The use of high purity, fine grain size graphite allows molds to be machined at low cost, thereby eliminating the need to fabricate a metal mold that must be coated with multiple layers including metal diffusion barrier layers to meet operational requirements for such precision applications.

Thermoset ceramic compositions, inorganic polymer coatings, inorganic polymer mold tooling, inorganic polymer hydraulic fracking proppants, methods of preparation and applications therefore

Thermoset ceramic compositions and a method of preparation of such compositions. The compositions are advanced organic/inorganic hybrid composite polymer ceramic alloys. The material combines strength, hardness and high temperature performance of technical ceramics with the strength, ductility, thermal shock resistance, density, and easy processing of the polymer. Consisting of a branched backbone of silicon, alumina, and carbon, the material undergoes sintering at 7 to 300 centigrade for 2 to 94 hours from water at a pH between 0 to 14, humidity of 0 to 100%, with or without vaporous solvents.

NOVEL MATERIALS WITH EXTREMELY DURABLE INTERCALATION OF LITHIUM AND MANUFACTURING METHODS THEREOF

Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same. 182-. (canceled)83. A material comprising a plurality of composite particles , wherein the composite particles comprise: [{'sup': '3', '(i) a total pore volume of greater than 0.6 cm/g;'}, '(ii) a volume fraction of micropores in the range from 20-50% and a volume fraction of mesopores in the range of 50-80%;', '(iii) a fractional pore volume of pores at or below 10 nm that comprises at least 75% of the total pore volume; and', '(iv) a Dv50 ranging from 5 nm to 20 um; and, '(a) a porous carbon framework comprising micropores and mesopores, and having(b) nano-featured silicon embedded within pores of the porous carbon framework, wherein the weight percent of the nano-featured silicon to the porous carbon framework ranges from 10% to 80%.84. The material of claim 83 , wherein the Dv50 ranges from 2 to 20 microns.85. The material of claim 83 , wherein the material has a surface area ranging from about 5 m/g to about 400 m/g.86. The material of claim 83 , wherein the material has a surface area below 30 m/g.87. The material of claim 83 , wherein the porous carbon framework has a monomodal pore size distribution.88. The material of claim 83 , wherein the material has a gravimetric capacity between 1200 and 3500 mAh/g when the material is incorporated into an electrode of a lithium based energy storage device.89. An electrode comprising the material of and a binder or a conductive additive claim 83 , or both.90. A lithium-based energy storage device comprising the material of .91. A material comprising a plurality of composite particles claim 83 , wherein the composite particles comprise: [{'sup': '3', '(i) a total pore volume of greater than 0.6 cm/g;'}, '(ii) ...

SUPERHARD PCD CONSTRUCTIONS AND METHODS OF MAKING SAME

A polycrystalline super hard construction comprises a body of polycrystalline diamond (PCD) material and a plurality of interstitial regions between inter-bonded diamond grains forming the polycrystalline diamond material. The body of PCD material comprises a working surface positioned along an outside portion of the body, and a first region adjacent the working surface, the first region being a thermally stable region. The first region and/or a further region and/or the body of PCD material has/have an average oxygen content of less than around 300 ppm. A method of forming such a construction is also disclosed. 1. A polycrystalline super hard construction comprising a body of polycrystalline diamond (PCD) material and a plurality of interstitial regions between inter-bonded diamond grains forming the polycrystalline diamond material; the body of PCD material comprising:a working surface positioned along an outside portion of the body;a first region adjacent the working surface, the first region being a thermally stable region; whereinthe first region and/or a further region and/or the body of PCD material has/have an average oxygen content of less than around 300 ppm.2. The polycrystalline super hard construction of claim 1 , wherein the first region is substantially free of a solvent/catalysing material for diamond.3. The polycrystalline super hard construction of claim 1 , further comprising the further region claim 1 , the further region being remote from the working surface and comprising solvent/catalysing material in a plurality of the interstitial regions; wherein the oxygen content of the further region is less than around 300 ppm.4. The polycrystalline super hard construction of claim 1 , wherein the thermally stable region and/or a further region and/or the body of PCD material has/have an average oxygen content of between around 10 ppm to around 300 ppm.5. The polycrystalline super hard construction of claim 1 , wherein the thermally stable region and/or ...

DISINTEGRATABLE CARBON COMPOSITES, METHODS OF MANUFACTURE, AND USES THEREOF

A carbon composite is disclosed, including a plurality of carbon grains, wherein each of the plurality of carbon grains includes a plurality of pores, and a binder disposed between the plurality of carbon grains to bond the plurality of carbon grains, wherein the binder is a disintegrable binder. 1. A carbon composite comprising:a plurality of carbon grains, wherein each of the plurality of carbon grains includes a plurality of pores; anda binder disposed between the plurality of carbon grains to bond the plurality of carbon grains, wherein the binder is a disintegrable binder.2. The carbon composite of claim 1 , wherein the carbon comprises amorphous carbon claim 1 , natural graphite claim 1 , carbon fiber claim 1 , or a combination comprising at least one of the foregoing material.3. The carbon composite of claim 1 , wherein the plurality of carbon grains are a plurality of graphite grains.4. The carbon composite of claim 3 , wherein each of the plurality of graphite grains are between 5 to 500 micrometers in diameter.5. The carbon composite of claim 3 , wherein each of the plurality of graphite grains between are 0.01 to 500 micrometers in thickness.6. The carbon composite of claim 1 , wherein the binder is an ester polymer.7. The carbon composite of claim 1 , wherein the binder is an amide polymer.8. The carbon composite of claim 1 , wherein the binder is an ether polymer.9. The carbon composite of claim 1 , wherein the binder is polyurethane.10. The carbon composite of claim 1 , wherein the binder is between 10 to 90 percent of the carbon composite by volume.11. The carbon composite of claim 1 , wherein the binder is a magnesium alloy with a nickel catalyst.12. The carbon composite of claim 11 , wherein the binder is a controlled electrolytic metallic material.13. The carbon composite of claim 12 , wherein the binder is at least one of a magnesium alloy claim 12 , a magnesium silicon alloy claim 12 , a magnesium aluminum alloy claim 12 , a magnesium zinc alloy ...

METHOD OF MAKING HARD-CARBON COMPOSITE MATERIAL

A method is described to make a metal-containing non-amorphous hard-carbon composite material that is synthesized from furan-ring containing compounds. The metals described in the process include lithium and transition metals, including transition metal oxides like lithium titanates. The non-amorphous hard-carbon component of the metal-containing non-amorphous hard-carbon composite material is characterized by a dpeak—in the X-ray diffraction patterns—that corresponds to an interlayer spacing of >3.6 Å, along with a prominent D-band peak in the Raman spectra. These metal-containing hard-carbon composites are used for constructing electrodes for Li-ion batteries and Li-ion capacitors. 1. A method of producing a lithium-containing non-amorphous hard-carbon composite from a furan-ring containing compound , comprising:a. mixing an insoluble lithium compound and an acidic catalyst with a furan-ring containing compound to form a mixture, wherein the furan-ring compound is a 5 membered ring with 4 carbon atoms and 1 oxygen atom;b. soaking the mixture at room temperature and further heating the mixture between 25° C. and 200° C. to form a solid-polymer/lithium-containing composite; andc. heating the solid-polymer/lithium-containing composite between 200° C. to 1100° C. under an inert atmosphere, to carbonize the solid-polymer/lithium-containing composite and make the lithium-containing non-amorphous hard carbon.2. The method of claim 1 , wherein the furan-ring containing compound is at least one of a furfuryl alcohol claim 1 , furfuraldehyde claim 1 , 5-hydroxymethylfurfural claim 1 , 5-methylfurfural claim 1 , 2-acetylfuran and polyfurfuryl alcohol.3. The method of claim 1 , wherein the catalyst is at least one of an organic acid with a pKa value equal to or greater than that of oxalic acid claim 1 , either directly or in a solution with deionized water.4. The method of claim 1 , wherein the insoluble lithium compound is a titanium containing compound claim 1 , wherein the ...

METHOD FOR MAKING SUPER-HARD CONSTRUCTIONS

A method of making a construction comprising a polycrystalline super-hard structure joined to a side surface of an elongate substrate. The method includes: providing a vessel configured for an ultra-high pressure, high temperature furnace, the vessel having an elongate cavity for containing a pre-sinter assembly and defining a longitudinal axis, the cavity having opposite ends connected by a cavity wall. The pre-sinter assembly comprises the substrate, an aggregation comprising a plurality of super-hard grains arranged over at least a part of the side surface of the substrate, and a spacer structure configured for spacing the substrate apart from the cavity wall. The spacer structure comprises material having a Young's modulus of at least 300 GPa. The method further includes inserting the pre-sinter assembly into the cavity, the substrate being substantially longitudinally aligned and the spacer structure arranged between the side surface of the substrate and the cavity wall; applying a force to the pre-sinter assembly and heating it to a temperature, the force being sufficient to generate a pressure within the vessel for sintering the aggregation at the temperature, and providing the construction. 1. A method of making a construction comprising a polycrystalline super-hard structure joined to a side surface of an elongate substrate; the method including: providing a vessel configured for an ultra-high pressure , high temperature furnace , the vessel having an elongate cavity for containing a pre-sinter assembly and defining a longitudinal axis , the cavity having opposite ends connected by a cavity wall; the pre-sinter assembly comprising the substrate , an aggregation comprising a plurality of super-hard grains arranged over at least a part of the side surface of the substrate , and a spacer structure configured for spacing the substrate apart from the cavity wall; the spacer structure comprising material having a Young's modulus of at least 300 GPa; the method ...

POLYCRYSTALLINE DIAMOND CONSTRUCTIONS

A polycrystalline diamond (PCD) construction has a first region of a first grade of PCD material; and a second region of a second grade of PCD material, the first region being at least partially peripherally surrounded by the second region, the first and second regions being bonded to each other by direct inter-growth of diamond grains to form an integral PCD structure and a substrate bonded to the first and/or second region(s) along an interface. The first grade of PCD differs from the second grade in one or more of diamond and metal network compositional ratio, metal elemental composition, or average diamond grain size, the first grade of PCD material having a larger average diamond grain size than the second grade of PCD material, and/or a smaller volume percentage of residual catalyst and/or binder in interstitial spaces between interbonded diamond grains than the PCD material of the second region. 1. A polycrystalline diamond (PCD) construction comprising:a first region comprising a first grade of PCD material; anda second region comprising a second grade of PCD material, the first region being at least partially peripherally surrounded by the second region, the first and second regions being bonded to each other by direct inter-growth of diamond grains to form an integral PCD structure; wherein:the first grade of PCD material differs from the second grade of PCD material in one or more of diamond and metal network compositional ratio, metal elemental composition, or average diamond grain size, the first grade of PCD material having a larger average diamond grain size than the average diamond grain size of the second grade of PCD material, and/or a smaller volume percentage of residual catalyst and/or binder in interstitial spaces between interbonded diamond grains than the in the PCD material of the second region; and a substrate bonded to the first and/or second region(s) along an interface.2. The PCD construction of claim 1 , wherein the first region forms ...

METHODS TO FABRICATE NEEDLED PREFORMS WITH RANDOMLY ORIENTED SHORT LENGTH CARBON FIBERS

A method and apparatus for fabricating a short length carbon fiber preform with a through thickness reinforcement is disclosed herein. The starting media for fabricating a net shape (e.g., annular disc) may meet specific requirements including a sufficient fiber volume and a binding mechanism compatible with the needle-punching process. 1. A platen comprising:a shaped heat delivery assembly, wherein the shaped heat delivery assembly is configured to deliver heat to a blend of a plurality of short length carbon fiber bundles and a binder material to form a partially melted net shape preform; anda pressure delivery surface configured to apply pressure to the partially melted net shape preform, wherein the partially melted net shape preform is subsequently needled.2. The platen of claim 1 , wherein the partially melted net shape preform is at least one of an annular disc shape and a section of an annular shaped disc.3. The platen of claim 1 , wherein the platen is configured to move in a direction normal to a conveying surface and in a direction of the conveying of the conveying surface. This application is a divisional of U.S. Ser. No. 14/230,246, filed Mar. 31, 2014, entitled “METHODS TO FABRICATE NEEDLED PREFORMS WITH RANDOMLY ORIENTED SHORT LENGTH CARBON FIBERS,” which is hereby incorporated by reference in its entirety.This disclosure generally relates to textile preparation, and more particularly, to systems and methods associated with short carbon fibers preforming.Carbon/carbon (“C/C”) parts are employed in various industries. An exemplary use for C/C parts includes using the parts as friction disks such as aircraft brake disks, race car brake disks, clutch disks, and the like. C/C brake disks are especially useful in such applications because of the superior high temperature characteristics of C/C material. In particular, the C/C material used in C/C parts is a good conductor of heat, and thus, is able to dissipate heat away from the braking surfaces that is ...

Method for preparing bulk c-aln composite aerogel with high strength and high temperature resistance

Provided is a method for preparing a bulk C—AlN composite aerogel with high strength and high temperature resistance, which includes: evenly stirring aluminum chloride crystals, water, ethanol and epoxy propane, to obtain a clear aluminum oxide sol solution, then adding formaldehyde and resorcinol to the solution and performing even stirring, to obtain an RF/Al 2 O 3 composite aerogel sol solution, leaving the gel to stand, treating the sample by using a supercritical CO 2 drying method, and finally heat-treating the sample at a high temperature under the condition of nitrogen, to obtain the bulk C—AlN composite aerogel with high strength and high temperature resistance. The composite aerogel prepared by using this method has advantages of high integrity, high specific surface area, intact structure, low heat conductivity, low density, and high strength.

REFRACTORY METAL CERAMICS AND METHODS OF MAKING THEREOF

A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture. 1. A composition comprising:a refractory-metal hydride; andan organic compound having a char yield of at least 60% by weight.23-. (canceled)4. The composition of claim 1 , wherein the refractory-metal hydride is titanium hydride claim 1 , zirconium hydride claim 1 , hafnium hydride claim 1 , tungsten hydride claim 1 , niobium hydride claim 1 , molybdenum hydride claim 1 , chromium hydride claim 1 , tantalum hydride claim 1 , or vanadium hydride.5. The composition of claim 1 , wherein the organic compound:contains only carbon and hydrogen;contains aromatic and acetylene groups;contains only carbon, hydrogen, and nitrogen or oxygen;contains no oxygen; orcontains a heteroatom other than oxygen.6. The composition of claim 1 , wherein the organic compound is 1 claim 1 ,2 claim 1 ,4 claim 1 ,5-tetrakis(phenylethynyl)benzene or a prepolymer thereof claim 1 , N claim 1 ,N′-(1 claim 1 ,4-phenylenedimethylidyne)-bis-(3-ethynylaniline) claim 1 , dianilphthalonitrile claim 1 , or resorcinol phthalonitrile.7. (canceled)8. The composition of claim 1 , wherein the composition comprises a material selected from the group consisting of fibers claim 1 , carbon fibers claim 1 , ceramic fibers claim 1 , and ...

POLYCRYSTALLINE DIAMOND CUTTERS AND LIQUID SEDIMENTATION - HPHT METHOD OF MAKING THEREOF

Polycrystalline diamond cutters and methods of making thereof are described. The cutters include a substrate and a diamond body. The diamond body includes diamond particles spatially arranged according to a gradient of particle sizes. The methods include steps of suspending diamond particles in a liquid and allowing their sedimentation according to a gradient of particle sizes resulting in regions spatially arranged axially and/or radially in which a majority of diamond particles in one region have lower average sizes or average diameters comparative to a majority of diamond particles in a second region. 138-. (canceled)39. A method of making a polycrystalline diamond cutter , the method comprising:forming a diamond particles feed layer by a process that includes i) making a temporary suspension of diamond particles in a liquid; ii) allowing sedimentation of the diamond particles; and iii) removing the liquid;forming an assembly comprising, along the axis of symmetry of the assembly, a refractory container, the diamond particles feed layer, and a substrate; andprocessing the assembly under high pressure high temperature sintering conditions (HPHT) from 5 GPa to 8 GPa and from 1300° C. to 1600° C. to sinter the diamond feed layer into a diamond body affixed to the substrate;wherein a portion of the diamond feed layer comprises a plurality of diamond particles spatially arranged along a dimension of the layer according to a gradient of particle sizes.40. The method of claim 39 , wherein pouring includes contacting the suspension or the diamond particles with a baffle.41. The method of claim 40 , wherein the baffle directs a portion of the suspension of the diamond particles toward a peripheral region of the refractory container or to a central region of the refractory container.42. The method of claim 39 , wherein the process of forming the diamond feed layer further includes subjecting one or more of the temporary suspension and the sedimented diamond particles to a ...

SILICON PARTICLES FOR BATTERY ELECTRODES

Silicon particles for active materials and electro-chemical cells are provided. The active materials comprising silicon particles described herein can be utilized as an electrode material for a battery. In certain embodiments, the composite material includes greater than 0% and less than about 90% by weight of silicon particles. The silicon particles have an average particle size between about 0.1 μm and about 30 μm and a surface including nanometer-sized features. The composite material also includes greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases is a substantially continuous phase. 1. A composite material , comprising:greater than 0% and less than about 90% by weight of silicon particles; andgreater than 0% and less than about 90% by weight of one or more types of carbon phases, andwherein at least one of the one or more types of carbon phases is a substantially continuous phase that holds the composite material together such that the silicon particles are distributed throughout the composite material.2. The composite material of claim 1 , wherein the silicon particles have an average largest dimension less than about 1 μm.3. The composite material of claim 1 , comprising about 20% to about 80% of the silicon particles by weight.4. The composite material of claim 1 , wherein the at least one of the one or more types of carbon phases that is the substantially continuous phase is electrochemically active and electrically conductive.5. The composite material of claim 1 , wherein the at least one of the one or more types of carbon phases that is the substantially continuous phase comprises hard carbon.6. The composite material of claim 1 , wherein the one or more types of carbon phases comprises graphite particles.7. The composite material of claim 1 , further comprising conductive particles.8. The composite material of claim 1 , further comprising metal particles.9. The ...

COMPOSITE SINTERED MATERIAL

A composite sintered material includes a plurality of diamond grains, a plurality of cubic boron nitride grains, and a remainder of a binder phase, wherein the binder phase includes cobalt, a content of the cubic boron nitride grains in the composite sintered material is more than or equal to 3 volume % and less than or equal to 40 volume %, and an average length of line segments extending across continuous cubic boron nitride grains in appropriately specified straight lines extending through the composite sintered material is less than or equal to a length three times as large as an average grain size of the cubic boron nitride grains. 1. A composite sintered material comprising a plurality of diamond grains , a plurality of cubic boron nitride grains , and a remainder of a binder phase , whereinthe binder phase includes cobalt,a content of the cubic boron nitride grains in the composite sintered material is more than or equal to 3 volume % and less than or equal to 40 volume %, andan average length of line segments extending across continuous cubic boron nitride grains in appropriately specified straight lines extending through the composite sintered material is less than or equal to a length three times as large as an average grain size of the cubic boron nitride grains.2. The composite sintered material according to claim 1 , wherein an average length of line segments extending across the diamond grains or across the diamond grains and the binder phase adjacent to the diamond grains in the appropriately specified straight lines extending through the composite sintered material is more than or equal to 0.3 μm and less than or equal to 5 μm.3. The composite sintered material according to claim 1 , wherein a standard deviation of lengths of line segments extending across the diamond grains or across the diamond grains and the binder phase adjacent to the diamond grains in the appropriately specified straight lines extending through the composite sintered material ...

POLYCRYSTALLINE DIAMOND BODIES INCORPORATING FRACTIONATED DISTRIBUTION OF DIAMOND PARTICLES OF DIFFERENT MORPHOLOGIES

Diamond bodies and methods of manufacture are disclosed. Diamond bodies are formed from at least a bimodal, alternatively a tri-modal or higher modal, feedstock having at least one fraction of modified diamond particles with a fine particle size (0.5-3.0 μm) and at least one fraction of diamond particles with coarse particle size (15.0 to 30 μm). During high pressure—high temperature processing, fine particle sized, modified diamond particles in the first fraction preferentially fracture to smaller sizes while preserving the morphology of coarse particle sized diamond particles in the second fraction. Diamond bodies incorporating the two fractions have a microstructure including second fraction diamond particles dispersed in a continuous matrix of first fraction modified diamond particles and exhibit improved wear characteristics, particularly for wear associated with drilling of geological formations. 1. A polycrystalline diamond body , comprising a plurality of diamond grains that are bonded to one another through diamond particle-to-diamond particle bonds , the diamond grains comprise a first fraction and a second fraction;', 'the first fraction has a first median particle distribution D50;', 'the second fraction has a second median particle distribution D50, the second fraction of diamond grains comprising at least about 60 vol. % of the diamond grains in the diamond body; and', 'the second median particle distribution D50 is at least about 7 times the first median particle distribution D50., 'wherein2. The polycrystalline diamond body of claim 1 , wherein the first fraction of diamond grains are positioned to separate each of the diamond grains of the second fraction from one another.3. A polycrystalline diamond body claim 1 , comprising a plurality of diamond grains that are bonded to one another through diamond particle-to-diamond particle bonds claim 1 , the diamond grains comprise a first fraction and a second fraction;', 'the first fraction has a first ...

HEAT DISSIPATING PLATE DEVICE FOR LIGHT EMITTING DIODE, HEAD LAMP FOR AUTOMOBILE AND METHOD FOR PREPARING THE SAME

A heat dissipating plate for a light emitting diode (LED) includes a metal thin film containing a hydroxyl functional group (—OH). A coating layer is disposed on at least one surface of the metal thin film and includes a carbon nanotube containing a hydrophilic functional group. The coating layer is attached to the metal thin film by bonding the hydroxyl functional group with the hydrophilic functional group in a hydrogen bond. 1. A heat dissipating plate for a light emitting diode (LED) comprising:a metal thin film containing a hydroxyl functional group (—OH); anda coating layer disposed on at least one surface of the metal thin film, and comprising a carbon nanotube containing a hydrophilic functional group.2. The heat dissipating plate of claim 1 , wherein a bonding energy of the hydrogen bond is about 15 KJ/mol to 40 KJ/mol.3. The heat dissipating plate of claim 1 , wherein the hydrophilic functional group is a carboxyl functional group (—COOH).4. The heat dissipating plate of claim 1 , wherein a thickness of the coating layer is about 10 to 100 μm.5. The heat dissipating plate of claim 1 , wherein an average diameter of the carbon nanotube is about 10 to 30 nm.6. The heat dissipating plate of claim 1 , wherein an average length of the carbon nanotube is about 1 to about 20 μm.7. The heat dissipating plate of claim 1 , wherein the metal thin film is a thin film of a metal selected from aluminum claim 1 , iron claim 1 , copper claim 1 , nickel silver claim 1 , tin claim 1 , zinc claim 1 , tungsten claim 1 , and a combination thereof.8. The heat dissipating plate of claim 1 , wherein the metal thin film further comprises a plurality of protruded heat dissipating fins.9. The heat dissipating plate of claim 8 , wherein the heat dissipating fins are selected from aluminum claim 8 , iron claim 8 , copper claim 8 , nickel silver claim 8 , tin claim 8 , zinc claim 8 , tungsten claim 8 , and a combination thereof.10. A head lamp for an automobile comprising the heat ...