СУПЕРАБРАЗИВНЫЙ МАТЕРИАЛ С ЗАЩИТНЫМ АДГЕЗИВНЫМ ПОКРЫТИЕМ И СПОСОБ ИЗГОТОВЛЕНИЯ ТАКОГО ПОКРЫТИЯ

Изобретение относится к сверхтвердым алмазным материалам с покрытием и может быть использовано в износостойких изделиях, армированных твердым сплавом и содержащих абразив инструментах. Покрытие на алмазосодержащем материале, выбранном из группы, состоящей из алмаза, монокристаллического алмаза, поликристаллического алмаза, алмазно-карборундовых композитов и алмазосодержащего материала, преимущественно не содержащего катализирующих металлов, которое является термостойким при температурах до по меньшей мере 800°С, содержит первый адгезивный слой, сформированный непосредственно на алмазосодержащем материале и содержащий смесь из вольфрама и карбида вольфрама, сплавленную с фтором в количестве от 0,001 до 0,12% от общей массы первого слоя, и второй защитный слой, сформированный на первом слое и содержащий по меньшей мере вольфрам, сплавленный с фтором в количестве от 0,001 до 0,12% от общей массы второго слоя. Предложены также способ нанесения указанного покрытия, суперабразивный элемент с ...

КЕРАМИЧЕСКИЕ СРЕДЫ И КРАСКИ В ПОРОШКООБРАЗНОЙ ФОРМЕ

Изобретение относится к печатным средам, пригодным для керамических спекаемых материалов, которые находятся в порошкообразной форме, к композициям красок для керамики, включающим печатные среды и керамические пигменты, и к способам для художественного оформления сырых или отожженных керамических тел путем использования указанных печатных сред и композиций. Печатная среда включает от 5 до 50 мас.% неорганического абсорбента, от 10 до 50 мас.% гликоля, от 20 до 70 мас.% мочевины и от 0,1 до 10 мас.% модификатора реологии. Порошкообразные печатные среды дают краски для керамики, которые делают возможными осуществление орнаментов, имеющих сравнимую или улучшенную четкость по отношению к краскам, полученным с использованием традиционных жидких сред. 5 н. и 5 з.п. ф-лы, 3 табл., 2 пр.

КЕРАМИЧЕСКАЯ ПЛИТКА И СПОСОБ ИЗГОТОВЛЕНИЯ КЕРАМИЧЕСКИХ ПЛИТОК

Изобретение относится к производству комплекта керамических облицовочных плиток, имеющих керамический базовый слой и слой покровной глазури, содержащий отпечатанный рисунок, выполненный цифровым способом и показывающий текстуру древесины или камня. Поверхность керамической плитки содержит рельеф, имеющий структурные элементы в виде выемок в плоской верхней поверхности, соответствующие указанному отпечатанному рисунку. Плитки выполнены прямоугольной продолговатой формы. Способ изготовления керамических плиток включает формирование базового слоя плитки, нанесение глазури, печать рисунка и последующий обжиг изделия. Рельеф формируют на поверхности базового керамического слоя или поверх слоя покровной глазури перед стадией обжига или во время неё. Технический результат изобретения – получение комплекта керамических плиток, для которых при укладке менее заметна разница высот соседних плиток, а нанесённая текстура древесины или камня является менее искусственной. 2 н. и 13 з.п. ф-лы, 4 ил.

БАРЬЕР ДЛЯ ЗАЩИТЫ ОТ ОКРУЖАЮЩЕЙ СРЕДЫ ДЛЯ ЖАРОСТОЙКОГО СУБСТРАТА, СОДЕРЖАЩЕГО КРЕМНИЙ

Изобретение относится к получению жаростойких покрытий и может быть использовано для защиты субстрата (10), по меньшей мере, часть которого вблизи поверхности состоит из кремнийсодержащего жаростойкого материала, например из карбида кремния или нитрида кремния, в процессе его использования при высокой температуре в окислительной и влажной среде. На поверхности субстрата формируют не содержащий бора барьер для защиты от окружающей среды, имеющий по меньшей мере один самовосстанавливающийся слой (22), который образован по существу системой оксидов, образованной, по меньшей мере, одним оксидом редкоземельного металла, оксидом кремния и оксидом алюминия, и который сохраняет по меньшей мере одну твердую фазу при температуре до 1400°С и имеет жидкую фазу, которая при температуре, равной или больше 1400°С, составляет 5-40 мол.% общей композиции слоя. Между поверхностью субстрата (10) и самовосстанавливающимся слоем (22) расположен подслой (24), который остаётся в твёрдом состоянии при температуре ...

ДЕТАЛЬ, СОДЕРЖАЩАЯ ПОДЛОЖКУ И ВНЕШНИЙ БАРЬЕР

Настоящее изобретение относится к детали, содержащей подложку по меньшей мере с одним участком, изготовленным из содержащего кремний материала, смежным с поверхностью подложки, и внешний барьер, образованный на поверхности подложки и содержащий первый слой, содержащий по меньшей мере один силикат редкоземельного элемента в количестве по меньшей мере 50 мол.% со средним размером зерен, составляющим 1 мкм или менее; и второй слой, покрывающий первый слой и содержащий по меньшей мере один второй силикат редкоземельного элемента в количестве по меньшей мере 50 мол.% и имеющий средний размер зерен, больший чем 1 мкм. В составе первого слоя используют дисиликат иттербия и дисиликат иттрия, а в составе второго слоя – дисиликаты или моносиликаты редкоземельных элементов. Технический результат изобретения – увеличение срока службы детали во влажной и окисляющей среде при высокой температуре. 2 н. и 8 з.п. ф-лы, 2 пр., 7 ил.

СУСПЕНЗИЯ, УГЛЕРОДСОДЕРЖАЩИЙ КОМПОНЕНТ ЯЧЕЙКИ, СПОСОБ НАНЕСЕНИЯ ОГНЕУПОРНОГО БОРИДА, СПОСОБ ЗАЩИТЫ УГЛЕРОДСОДЕРЖАЩЕГО КОМПОНЕНТА, МАССА УГЛЕРОДСОДЕРЖАЩЕГО КОМПОНЕНТА, КОМПОНЕНТ ЭЛЕКТРОХИМИЧЕСКОЙ ЯЧЕЙКИ, СПОСОБ ПОВЫШЕНИЯ УСТОЙЧИВОСТИ К ОКИСЛЕНИЮ, ЯЧЕЙКА ДЛЯ ПРОИЗВОДСТВА АЛЮМИНИЯ И ИСПОЛЬЗОВАНИЕ ЯЧЕЙКИ

Изобретение относится к нанесению огнеупорных боридов на компоненты ячеек для производства алюминия путем электролиза, в частности на углеродные катоды. Для этого на углеродсодержащие компоненты ячейки для получения алюминия из окисла алюминия, растворенного в расплаве криолита, наносят покрытие из огнеупорных боридов из суспензии, состоящей из полученных заранее частиц огнеупорного борида в коллоидном носителе, которое сушат и нагревают для упрочнения. Способ позволяет создать покрытие, хорошо прилипающее к углеродсодержащим компонентам ячейки, которое обеспечивает их защиту от коррозионного воздействия жидкостей, испарении и газов, имеет механическую прочность и требуемые химические и электрохимические характеристики. 10 с. и 49 з.п. ф-лы, 5 ил.

СПОСОБ ЗАЩИТЫ ЖАРОПРОЧНЫХ МАТЕРИАЛОВ ОТ ВОЗДЕЙСТВИЯ АГРЕССИВНЫХ СРЕД ВЫСОКОСКОРОСТНЫХ ГАЗОВЫХ ПОТОКОВ (ВАРИАНТЫ)

Способ защиты жаропрочных материалов от воздействия агрессивных сред высокоскоростных газовых потоков включает нанесение на поверхность слоя на основе кремния, содержащего в мас.%: 15-40 титана, 5-30 молибдена, 0,1-1,5 иттрия, 0,5-2,5 бора, 0,2-6,0 хрома, 7-10 одного или несколько элементов из VIII группы, либо слоя, на основе кремния содержащего, в мас.%: 15-40 титана, 5-30 молибдена, 0,1-1,5 иттрия, 0,5-2,5 бора, и последующую термообработку при 1300-1600oC. По первому варианту слой может содержать 1,5 мас.% марганца. 2 с. и 1 з.п. ф-лы.

ЗАЩИТА ИЗДЕЛИЙ, ИЗГОТОВЛЕННЫХ ИЗ КОМПОЗИТНОГО МАТЕРИАЛА

... 1. Способ защиты детали из композитного материала от окисления, включающий нанесение на деталь состава, содержащего смесь, по меньшей мере, одного борида в форме порошка, по меньшей мере, одного термостойкого стекловидного оксида в форме порошка, обладающего способностью к заживлению трещин путем образования стекла, и связующего вещества, содержащего смолу-источник термостойкого керамического материала; и структурирование смолы, отличающийся тем, что основным компонентом порошка борида является диборид титана TiB2, а основным компонентом порошка, по меньшей мере, одного термостойкого оксида является смесь боросиликатов. 2. Способ по п.1, отличающийся тем, что связующее вещество содержит полимер-источник керамического материала, выбранный из поликарбосиланов, полититанокарбосиланов, полисилазанов, поливинилсиланов и силиконовых смол. 3. Способ по п.2, отличающийся тем, что структурирование осуществляют при температуре, меньшей 400°С. 4. Способ по п.1, отличающийся тем, что на деталь наносят ...

МНОГОСЛОЙНОЕ БАРЬЕРНОЕ ПОКРЫТИЕ ДЛЯ ЗАЩИТЫ ОТ ВОЗДЕЙСТВИЯ ОКРУЖАЮЩЕЙ СРЕДЫ И ОТНОСЯЩИЕСЯ К НЕМУ ИЗДЕЛИЯ И СПОСОБЫ

... 1. Изделие (100), содержащее подложку (105) и множество групп покрытий, расположенных поверх указанной подложки (105), где каждая группа (115, 120, 125) покрытий содержит слой (116) геттера кислорода и барьерный слой (117). 2. Изделие (100) по п.1, в котором указанный слой (116) геттера кислорода содержит кремний. 3. Изделие (100) по п.2, в котором указанный слой (116) геттера кислорода содержит по меньшей мере один материал, выбранный из группы, состоящей из элементарного кремния и силицида. 4. Изделие (100) по п.1, в котором указанный барьерный слой (117) содержит керамику. 5. Изделие (100) по п.5, в котором указанная керамика содержит оксид. 6. Изделие (100) по п.6, в котором указанный оксид содержит по меньшей мере одно соединение, выбранное из группы, состоящей из алюмосиликата, силиката и алюмината. 7. Изделие (100) по п.1, в котором указанное множество (110) групп (115, 120, 125) покрытий образует последовательность указанных барьерных слоев (117) барьеров, имеющих по меньшей мере ...

ЗАЩИТА ПРОТИВ ОКИСЛЕНИЯ ИЗДЕЛИЙ ИЗ КОМПОЗИЦИОННОГО УГЛЕРОДОСОДЕРЖАЩЕГО МАТЕРИАЛА

... 1. Способ защиты от окисления детали, изготовленной из композиционного углеродсодержащего материала, имеющего открытые внутренние поры, включающий: ! импрегнирование детали жидкой импрегнирующей композицией, содержащей по меньшей мере одно соединение фосфатного типа, через посредство по меньшей мере части наружной поверхности детали; ! нанесение покрывающей композиции на указанную часть внешней поверхности детали, при этом покрывающая композиция содержит коллоидный раствор по меньшей мере одного огнеупорного оксида в воде, по меньшей мере одно соединение по существу боросиликатного типа в порошкообразной форме и обладающее свойствами залечивания, и по меньшей мере один борид металла в порошкообразной форме; и ! осуществление термической обработки после нанесения покрывающей композиции. ! 2. Способ по п.1, где коллоидный раствор является щелочным. ! 3. Способ по п.2, в котором используют коллоидный раствор, стабилизированный основным соединением. ! 4. Способ по любому из пп.1-3, где покрывающая ...

МЕТАЛЛИЧЕСКИЕ И/ИЛИ КЕРАМИЧЕСКИЕ КОМПОНЕНТЫ ПО МЕНЬШЕЙ МЕРЕ С ОДНОЙ ОССЕОИНТЕГРАЦИОННОЙ И ОСТЕОИНДУКТИВНОЙ ПОВЕРХНОСТНОЙ (МНОГО)СЛОЙНОЙ СТРУКТУРОЙ

ДЕТАЛЬ, ЗАЩИЩЕННАЯ ОКРУЖАЮЩИМ БАРЬЕРОМ

КЕРАМИЧЕСКАЯ ПЛИТКА И СПОСОБ ИЗГОТОВЛЕНИЯ КЕРАМИЧЕСКИХ ПЛИТОК

Способ нанесения покрытия на изделия из углерод-углеродного композиционного материала

Vorrichtung und Verfahren zum Herstellen einer Vorrichtung mit einem ersten Körper aus Stahl und einem Isolator

Vorrichtung mit einem ersten Körper (1) aus Stahl und einem Isolator (2), der ein Keramikelement (5) umfasst, das auf einer ersten und zweiten Seite mit Kupfer (6, 8) versehen ist, wobei das Kupfer (6, 8), das an der ersten Seite angeordnet ist, auf einer von dem Keramikelement (5) abgewandten Seite mit Nickel oder Chrom beschichtet ist und der erste Körper (1) mittels einer Schweißverbindung mit der Nickel- oder Chromschicht (10) verbunden ist.

VERFAHREN ZUM ELEKTROSTATISCHEN AUFTRAGEN EINES EINBRENNBAREN MATERIALS

VERHINDERUNG DER OXYDATION VON KOHLENSTOFFHALTIGEM MATERIAL BEI HOHEN TEMPERATUREN

Barrier layer ceramic capacitor prodn. - involving oxide additive diffusion into ceramic after sintering

Prodn. of capacitors of barrier layer ceramic based on substd. and/or doped Sr titanate involves forming the grain boundary layers in a two-stage process comprising: (i) a first stage in which one or more barrier layer-forming cpds., selected from silicates, titanates, manganates, aluminates or niobates of Ba, Sr, Ca, La, Y, Fe, Ni, Co, Mn, Cu and/or Si and/or two or more oxides of these metals, are added to the unsintered ceramic material such that, during the special sintering process, the cpds. are enriched in the grain boundary regions to produce insulating barrier layers; and (ii) further increase in breakdown resistance by diffusion of Bi, B and/or Pb oxides into the material in a second heat treatment process. USE/ADVANTAGE - Uniformly good barrier layer formation is achieved so that the finished capacitors are highly insulating and highly voltage resistant. Electrical breakdown does not occur even at field strengths of about 3 kV/mm. Claimed uses of the ceramic are for dielectric ...

Länglicher Formkörper aus supraleitender Keramik und Verfahren zu seiner Herstellung

MIKROPERMEABLE KERAMISCHE VERBUNDMEMBRAN, VERFAHREN UND VORRICHTUNG ZU IHRER HERSTELLUNG.

Verfahren zum Schutz eines Molybdaensilizid enthaltenden Koerpers vor oxydativem Zerfall

Perowskithaltiger Verbundwerkstoff, Verfahren zu seiner Herstellung, elektronisches Bauelement und Modul

Mit Alpha-aluminiumoxid beschichtetes Schneidwerkzeug

Verfahren zur Beschichtung eines Substrates

Production of a hydrophobic surface on silicate ceramic objects comprises application of an intermediate layer to produce a porous surface and a layer having ultraphobic and/or hydrophobic properties

A process for the production of a hydrophobic or ultraphobic surface on objects prepared from silicate ceramic comprises (A) application of an intermediate layer to produce a capillary-porous surface (B) application of a layer having ultraphobic and/or hydrophobic properties. An Independent claim is included for the hydrophobically and/or ultraphobically treated object.

Verbundkörper und dessen Verwendung

In order to improve the resistance to wear of a composite body made of a hardmetal, steel, ceramic (in particular sintered ceramic) or cermet substrate or a substrate made of diamond or of nickel or cobalt alloy, plus one or more surface layers of which at least one, preferably the outer one, consists of Al2O3, the invention proposes that the Al2O3 layer has a fine-crystalline structure and that this layer is applied using a plasma CVD technique with substrate temperature of 400 to 750 DEG C, preferably 450 to 550 DEG C, using plama activation, produced by a pulsed d.c. voltage, of the substrate connected up as the cathode. This Al2O3 layer consists of fine-crystalline gamma - and/or alpha -Al2O3, optionnally together with some amorphous Al2O3. The composite body is particularly suitable for use as a master-pattern tool.

SUBSTRAT MIT EINER ZU BEHANDELNDEN OBERFLÄCHE

Verfahren zur Herstellung von endodontischen, orthodontischen und direkten Restaurationen mit imprägniertem keramischen Netzwerk

Substrat mit einer superhydrophilen photokatalytischen Oberfläche

Verfahren zum Schutz von Faserwerkstoffen

Process and metallisation of a ceramic surface

The invention relates to a process for metallising ceramic surfaces, in particular of ceramic substrates which are suitable for producing electronic circuits. A firmly adhering metallisation is obtained by means of a pre-treatment of the ceramic surface with media containing hydrogen fluoride.

Halogenplasma beständiger Teil und Herstellungsverfahren dafür

Wear resistant coat prodn. on metal or ceramic substrate

In the prodn. of a wear-resistant coat by thermal spraying of hard and/or ceramic material powder onto a metal or ceramic substrate, an inorganic lubricant, which is resistant to high temp. is incorporated in the wearing coat by impregnation in vacuum, followed by the application of pressure.

Bauteil aus Aluminiumnitrid und Verfahren zu dessen Herstellung

Verfahren zur Herstellung eines hochtemperaturoxidationsbeständigen Kohlenstoffformkörpers

Glow, ignition or heating element for combustion and/or heating devices, especially glow plugs, spark plugs or heaters has highly stable corrosion protection layer comprising mixture of SiO2 and other material

Glow, ignition or heating element for combustion and/or heating devices, especially a glow plug, spark plug or heater, with a corrosion protection coating for an Si-ceramic containing glow-, glow plug- spark plug- or heating element, where the corrosion protection coating comprises a mixture of SiO2 and at least one other material. An independent claim is included for a method of producing the element.

VERFAHREN ZUR METALLISIERUNG VON KERAMISCHEN ODER GLAESERNEN TRAEGERKOERPERN

Improvements in the coating of ceramic substrates

Improvements in or relating to burnt clay articles

COATED FILAMENTS FOR COMPOSITES

Coated carbonaceous articles and method for making same

TITANIUM CARBIDE/BORIDE COATED SILICON CARBIDE FILAMENTS FOR COMPOSITES

Silicon carbide filaments (31) are coated to protect them from attack by a titanium matrix material when incorporating them into a metal matrix composite. The coating method comprises coating the filaments firstly with a carbon layer (32) and then with a titanium carbide or boride layer (33) whose carbon or boron content decreases progressively from its interface with the carbon layer to its exterior surface. A layer of titanium or a titanium based alloy (34) may be provided on the titanium carbide or boride layer (33) to facilitate incorporation into a metal matrix. Preferably, the layers (32-34) are applied by sputter ion plating.

Method of producing ceramic sinter having dense ceramic coating

A method comprising the steps of: coating at least that part of the surface of a porous ceramic to which a new function is to be imparted with a precursor which can be converted into a ceramic coating having such a function upon heating, coating the entire surface of the porous ceramic with another precursor which can be converted into a gas-impermeable coating upon heating, forming a gas-impermeable coating by heating, subjecting the porous sinter to hot isotropic pressing, and removing the gas-impermeable coating. The purpose ceramic sinter can be produced by this method efficiently in a shortened process.

METHOD OF PRODUCING CERAMIC SINTERED BODY HAVING DENSE CERAMIC MEMBRANE

Erosion-protection layer for a fibre-reinforced composite component

A component of fibre-reinforced composite 1 with a layer for protection against erosion, the protective layer comprising an adhesion-promoting intermediate layer 2, an electrically-insulating stoved inorganic lacquer layer 3 for protection against erosion and an electrically-conductive stoved compacted inorganic lacquer surface layer 4 for protection against lightning strikes. The component 1 may be a fibre-reinforced plastic or ceramic. The intermediate layer 2 is a matrix of glass-reinforced plastics applied so as to be embedded in the plastics material matrix of the component. The inorganic lacquer comprises a filler of aluminium powder. The lacquer of the surface layer 4 is compacted by shot-blasting, rolling, pressing and/or brushing. The protective layer is used for external components of power plant casings, nose cones or fan blades.

DECORATING CERAMIC ARTICLES

A ceramic article is decorated by

A METHOD OF PROTECTING CERAMIC BODIES AGAINST MECHANICAL AND THERMAL ACTION

COATING GRAPHITE TUBES FOR FLAMELESS ATOMIC ABSORPTION SPECTROSCOPY

Production of corrosion and erosion resistant solid carbon articles

The invention provides a composite carbon or graphite having desirable properties such as corrosion and wear resistance. The invention combines a graphite substrate with a protective porous zone of silicon carbide. The whole body of graphite plus silicon carbide then is infiltrated with aluminum phosphate. An adhered barrier of silicon carbide, ranging in thickness between 0.015 and 0.050 inch thick is integrated with a graphite stratum to form a very hard surface, resistant to mechanical and chemical wear. The silicon carbide barrier is closely compatible to the graphite substrate, in resistance to thermal shock and in qualities of thermal expansion. In order to improve oxidation resistance further, a new composition was formed by infiltrating aluminum phosphate through the silicon carbide into the graphite to form a single body of composite graphite.

Coated ceramic cutting insert and method of making the same

A coated ceramic cutting insert (20) for removing material from a workpiece, as well as a method for making the same, that includes a ceramic substrate ((40, 40A, 40B) with a rake surface (28) and at least one flank surface (30) wherein a cutting edge (32) is at the juncture therebetween. A wear-resistant coating scheme (50, 82) that includes at least one exposed alumina coating layer (50, 60, 62, 82) which exhibits a blasted stress condition ranging between about 50 MPa (tensile stress) and about - 2GPa (compressive) as measured by XRD using the Psi tilt method and the (024) reflection of alumina. The exposed alumina coating layer (50, 60, 62, 82) is the result of wet blasting a titanium-containing outer coating layer (54, 54A, 54B) region from the surface of the alumina-containing base coating layer region (50, 50A, 50B).

Improved method of coating graphite or like elements and products obtained by such method

In the coating of a graphite article, e.g. a rocket tube, with a refractory material, e.g. tungsten, molybdenum, tantalum, zirconium, hafnium, niobium or titanium, or their carbides, nitrides or borides, an intermediate coating comprising a mixture of the refractory coating material with one or more of the metals ruthenium, rhodium, palladium, osmium, indium, and platinum, is applied to the graphite to improve adhesion between the graphite and the refractory coating. The intermediate layer may be applied by covering the graphite with the mixture and heating under vacuum and the outer refractory layer by a plasma jet process. The platinum group metal and the refractory material may be in the proportion of 1 - 50% by weight of the mixture.

Process for producing a metal coating on a ceramic body

In a process of metallizing an unglazed ceramic surface a powder mixture of a metal such as Fe, Ni, Mo, W, Mn and a silicate consisting of or including magnesium silicate, iron silicate or manganese silicate is applied to the ceramic and sintered. The silicate should not release metal ions during sintering and should have a melting temperature just above the temperature to which the metallized coating is subjected to during subsequent soldering or further coating with nickel. The sintering is effected at 1250-1350 DEG C. in a weak oxidizing atmosphere such as moist cracked ammonia. The metallizing powder should contain at least 20% by weight silicate which in addition to manganese silicate may be a compound of any one of the systems MnO-Al2O3-SiO2, Fe-O-Al2O3-SiO2, MgO-Al2O3-SiO2.ALSO:In a process of metallizing an unglazed ceramic surface a powder mixture of a metal such as Fe, Ni, Mo, W, Mn and a silicate consisting of or including magnesium silicate, iron silicate or manganese silicate ...

Process for the production of improved boron coatings onto graphite and article obtained in this process

Ceramic impregnated superabrasives

Thermal/environmental barrier coating system for silicon-containing materials

PRODUCING A COATING OF METAL ON ARTICLES OF NON-METALLIC MATERIAL

... 1424660 Electroless plating INSTITUT METALLURGII IMENI 50 LETIA SSR AKADEMII NAUK GRUSINSKOI SSR 10 Oct 1974 43997/74 Heading C7F The surface of a non-metallic article is treated with Vienna lime (CaO-MgO) then with HNO 3 , then sensitized; it is then activated in a bath containing PdCl 2 and NaCl, followed by electroless metal planing, and the coated article is heated to 300-650 C. The article may be glass or quartz:- the Vienna lime is applied to a pad and the article rubbed therewith. A step of treating with H 2 SO 4 / K 2 CrO 7 may follow before treatment in conc. HNO 3 ; sensitization may be in SnCl 2 /HCl. The metal coating may be Ni, Co, Cu, Pd, or Ni-W, suitable baths being disclosed. Heating is in inert gas such as Ar or in a vacuum.

METHOD FOR MANUFACTURING A COMPOSITE SINTERED STRUCTURE

... 1438559 Sintered composite insulating & conducting layers HITACHI Ltd 25 July 1973 35530/73 Heading C7D A composite sintered structure which may be used in an integrated semi-conductor circuit device is made by depositing at least one layer of a green ceramic insulating paste 4 and at least one layer of a green ceramic conductor paste 2 on a green ceramic sheet I consisting of the same ceramic as the insulating paste and sintering the composite e.g. at 1450-1650‹C in a reducing or inert atmosphere. The ceramic used in the pastes and sheet is preferably 88-95% Al 2 O 3 the balance mineralizers such as S i O 2 and MgO. The conducting paste contains 50-70% W, Ti or Mo and the preferred binder for the pastes and sheet is polyvinyl butyral.

CUTTING TOOLS

FORMING COPPER FILM ON CERAMIC BODY

Improvements in or relating to the manufacture of ceramic articles such as insulators

... 347,612. Pottery manufacture. BULLERS, Ltd., 6, Laurence Pountney Hill, London, and HARRIS, J. E., Field Place, Stone, Staffordshire. Jan. 28, 1930, No. 2975. [Class 87 (i).] Treating surfaces.-A "sanded surface" is formed on a ceramic article such as an insulator in the biscuit state by temporarily sticking sand particles to the surface with an adhesive such as resin gum, dipping in glaze and finally firing so as to secure the sand particles to the surface by the glaze. The head of the insulator is preferably dipped into a bath of an adhesive such as gum tragacanth to a depth determined by the area of surface to be treated. The gum is then allowed to dry until " tacky," when sand or ground pitchers is applied, after which the whole is sprayed with glaze and fired at 1270‹ for about 48 hours.

Improvements relating to the mounting of a semiconductor on a base

... 1,068,190. Mounting semi-conductor bodies. GENERAL ELECTRIC CO. Oct. 6, 1964 [Nov. 4, 1963], No. 40768/64. Heading H1K. A semi-conductor body is mounted on a ceramic support by coating the support with a metallizing mix having therein particles of Si and/or Ge, heating the support to form a layer from the coating, etching the layer to expose the particles, flowing over the etched layer a layer of brazing material of Au, Ag or an alloy or intermetallic compound thereof, positioning the body on the layer of brazing material and brazing the body thereto. An alumina ceramic support 1 is coated with a mixture 4 containing Mo, Mn, Si and SiO 2 together in PVC or copoly-isobutyl methacrylate and butyl carbitol acetate as a binder, and then fired to drive off the binder to give an adherent film wherein the silicon particles 3 are slightly sintered. The film is etched with HNO 3 to remove Mn and Mo and then with HF to remove SiO 2 and clean the silicon particles. A brazing material 5 which contains ...

IMPROVEMENTS IN OR RELATING TO DECORATION OF CERAMIC WARE

A metallising coating for ceramics

... A metallizing coating for ceramics such as alumina, beryllia, or magnesia, for the purpose of uniting the ceramic to metal, is obtained by melting in a reducing atmosphere a mixture of manganese, titanium dioxide, and an oxide of molybdenum or tungsten to obtain on the ceramic 1 a vitreous mass 2 having on the surface a layer 3 of metallic molybdenum or tungsten to serve as a support for a layer 5 of nickel or copper to which another metal 6 can be brazed.ALSO:A metallizing coating for ceramics such as alumina, beryllia, or magnesia, for the purpose of uniting the ceramic to metal, is obtained by melting in a reducing atmosphere a mixture of manganese, titanium dioxide, and an oxide of molybdenum on tungsten to obtain on the ceramic a vitreous mass having on the surface a layer of metallic molybdenum or tungsten to serve as a support for a layer of nickel or copper to which another metal can be brazed.

Improvements in and relating to the metallizing of ceramic or cermet materials

A ceramic or cermet body is coated with a ternary alloy of substantially 1-10 per cent Ti, 1-30 per cent Sn, 60-98 per cent Cu. The coating will also serve to bond to the ceramic or cermet (e.g. almumina, steatite, zircon), a metal member (e.g. steel, Cu) of similar thermal expansion. The coating material is applied to the ceramic surface as a thin layer of homogeneous alloy in solid or powder form or a mixture of the powdered metals, and fixed at 850 DEG -1150 DEG C. in a dry oxygen-free atmosphere. If desired a Ni, Cu or Cd coat may then be applied and the thus coated ceramic be brazed by conventional methods (e.g. using Ag brazing powder) to a metal member. Specification 810,774 is referred to.

PICK-UP STYLUS

... 1487260 Sputtered composite coating on alumina MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 4 April 1975 [4 April 1974] 14004/75 Heading C7F [Also in Division G5 ] A pick-up stylus for use with a variable capacitance type record disc comprises a body of alumina coated, in sequence, with (a) a layer of solid solution of alumina and (i) one or more of SiO 2 , GeO 2 , SnO 2 , PbO, B203, Ga 2 O 3 , and In 2 O 3 or (ii) one or more of soda glass, lead glass, borosilicate glass and silica glass; (b) a layer of metal oxide, and (c) an electrically conductive layer of a metal or a metal carbide or boride, the metal being the one whose oxide provides layer (b), the bearing tip of the stylus presenting each of these layers so that in use they all contact said disc. Layer (a) may be made by R.F. sputtering the appropriate material in argon to a thickness of 0À01-0À3Á, layer (b) by R.F. sputtering the metal in O 2 to give 0À01-0À2Á thickness of coating, and layer (c) by R.F. sputtering the metal in argon; ...

FLEXIBLE ASSEMBLY OF METAL-COATED CARBON FIBRES AND A PROCESS FOR THE PRODUCTION THEREOF

VERFAHREN UND VORRICHTUNG ZUR OBERFLAECHENBEHANDLUNG VON FLAECHIGEN WERKSTUECKEN

PROCEDURE FOR THE PROTECTION OF A FLOOR MAT OR A LINING MATERIAL FROM STAINING SUBSTANCES

PROCEDURE FOR THE SELECTIVE SEPARATION OF A LAYER OF HIGH-MELTING METAL ON A WORKPIECE FROM GRAPHITE, IN PARTICULAR FOR THE PRODUCTION OF ANODES FOR ROENTGENROEHREN

CRUCIBLE FOR THE CRYSTALLIZATION FROM SILICON AND PROCEDURE TO YOUR PRODUCTION

CUTTING TOOL FROM COATED HIGH PRESSURE-SINTERED MATERIAL ON THE BASIS OF CUBIC BORON NITRIDE

PROCEDURE FOR THE DISTANCE OF THE COMPOUND COATING OF A CERAMIC SUBSTRATE

ISOLATING ONE AND FUNCTIONAL ONE FINE METALLIFEROUS PARTICLES WITH CONFORMAL ULTRADÜNNEN FILMS

CUTTING TOOL, MADE OF A SURFACE-COATED ULTRAHIGH-PRINTINGSINTERED MATERIAL ON BASIS OF CUBIC BORON NITRIDE

COMPOSITE MATERIAL

USE OF A SUBSTRATE ON BASIS OF SILICON NITRIDE FOR THE PRODUCTION OF SEMICONDUCTOR OF ELEMENTS

ANTI-OXIDATION PROTECTION OF ARTICLES FROM CARBON-CONTAINING COMPOSITE MATERIAL

VERFAHREN ZUR REPARATUR EINER BESCHÄDIGUNG

The method for repairing damage of a ceramic tile surface (4) formed on the visible side, comprises forming a recess (21) in the area of the damage, introducing or filling a first hardenable material into the recess and then hardening the first hardenable material, again removing a layer of the filled and hardened first material, which adjoins at the outer surface of the filled and hardened material lying on the visible side of the ceramic tile, and filling a second hardenable material into the formed recess and then hardening the second hardenable material. The method for repairing damage of a ceramic tile surface (4) formed on the visible side, comprises forming a recess (21) in the area of the damage, introducing or filling a first hardenable material into the recess and then hardening the first hardenable material, again removing a layer of the filled and hardened first material, which adjoins at the outer surface of the filled and hardened material lying on the visible side of the ...

SOL GEL PROCEDURE FOR THE PRODUCTION OF SILICON CARBIDE AS WELL AS A SUBSTRATE PROTECTION.

AGAINST OXIDATION BY BORCARBONITRIDE PROTECTING CARBON-CONTAINING MATERIAL

PROCEDURE FOR COATING SURFACES WITH HARD MATERIALS.

PROCEDURE FOR THE PRODUCTION OF AN AGAINST OXIDATION PROTECTED KOMPOSIT MATERIAL, AND AFTER THIS PROCEDURE MANUFACTURED MATERIAL.

PROCEDURE FOR HERSTELLNG OF CERAMEL COMPOSITE MATERIALS.

DIAMOND-COATED BODY

COMPOUND BODY FROM VACUUM-COATED SINTER MATERIAL AND PROCEDURE FOR ITS PRODUCTION

MANUFACTURING PROCESS OF MMC

PROCEDURE FOR THE OXIDATION PROTECTION PRODUCTS SO PROTECTED BY PRODUCTS OF FIREPROOF MATERIAL AND

OXIDATION-PROTECTED BRAKE DISK

CERAMIC MOLDED ARTICLE WITH PHOTO-CATALYTIC COATING AND PROCEDURE FOR THE PRODUCTION OF THE SAME

TRANSPORT ROLLER FOR TRANSPORTING METALBAND IN A RUN GLOW PLANT

LIQUID FÄRBEPRODUCT FOR DECORATING CERAMIC TILES

PVD COATED CUTTING TOOL AND PROCEDURE FOR ITS PRODUCTION

COATED CUTTING TOOLS ON SILICON NITRIDE BASIS

COMPOUND BODY AND ITS USE

Procedure for the production of waterproof coats on chimney interior and external walls

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.

Abradable layer including a rare earth silicate

An abradable coating may include a rare earth silicate. The abradable coating may be deposited over a substrate, an environmental barrier coating, or a thermal barrier coating. The abradable coating may be deposited on a gas turbine blade track or a gas turbine blade shroud to form a seal between the gas turbine blade track or gas turbine blade shroud and a gas turbine blade. The abradable coating may also include a plurality of layers, such as alternating first and second layers including, respectively, a rare earth silicate and stabilized zirconia or stabilized hafnia.

Protective coatings and coated components comprising the protective coatings

A coated component is provided comprising a silicon-based substrate and a braze layer overlying the silicon-based substrate. The braze layer comprises silicon, tantalum, and a metal element having substantially the same melt temperature with silicon as tantalum has with silicon. The braze layer further comprises ceramic particles. Protective coatings are also provided.

High temperature refractory coatings for ceramic substrates

A method of manufacturing a composite article includes pyrolyzing a preceramic polymer to form a non-oxide ceramic matrix and a byproduct, and reacting the refractory material with the byproduct to form a refractory phase within the non-oxide ceramic matrix.

METHODS FOR MAKING ENVIRONMENTAL BARRIER COATINGS AND CERAMIC COMPONENTS HAVING CMAS MITIGATION CAPABILITY

Methods of making components having calcium magnesium aluminosilicate (CMAS) mitigation capability include providing a component, applying an environmental barrier coating to the component, where the environmental barrier coating includes a CMAS mitigation composition selected from the group consisting of zinc aluminate spinel, alkaline earth zirconates, alkaline earth hafnates, rare earth gallates, beryl, and combinations thereof. 1. A method of making a component having calcium magnesium aluminosilicate (CMAS) mitigation capability comprising:providing a component comprising a ceramic matrix composite or a monolithic ceramic;applying an environmental barrier coating to the component, the environmental barrier coating comprising:a bond coat layer comprising silicon overlying the component;an optional silica layer overlying the bond coat layer;at least one transition layer overlying the bond coat layer or the optional silica layer comprising a composition selected from the group consisting of mullite, barium strontium aluminosilicate (BSAS), rare earth disilicates, and combinations thereof;an optional outer layer comprising an outer layer material selected from the group consisting of BSAS, rare earth monosilicates, rare earth disilicates, and combinations thereof; and{'sub': 4', '2', '9, 'a separate CMAS mitigation layer comprising LnGaOoverlying the at least one transition layer or the optional outer layer.'}2. The method of claim 1 , further comprising:applying an abradable layer to the separate CMAS mitigation layer.3. The method of claim 2 , wherein the abradable layer comprises LnGaO claim 2 , a rare earth disilicate claim 2 , or BSAS.4. The method of claim 1 , wherein the environmental barrier coating is applied by a method selected from the group consisting of plasma spraying claim 1 , high velocity plasma spraying claim 1 , low pressure plasma spraying claim 1 , solution plasma spraying claim 1 , suspension plasma spraying claim 1 , chemical vapor ...

DURABLE ENVIRONMENTAL BARRIER COATINGS FOR CERAMIC SUBSTRATES

An article includes a substrate and an environmental barrier coating overlying the substrate. The environmental barrier coating includes a first dense layer, an intermediate layer overlying the first dense layer, and a second dense layer overlying the intermediate layer. The first dense layer includes at least one of a first rare earth silicate or barium strontium aluminosilicate and the second dense layer includes at least one of a second rare earth silicate or barium strontium aluminosilicate. Additionally, the intermediate layer includes at least one of a porous microstructure, a lamellar microstructure, or an absorptive material. 1. An article comprising:a substrate; and a first dense layer comprising at least one of a first rare earth silicate or barium strontium aluminosilicate, wherein the first dense layer comprises a porosity of less than about 12 volume percent;', 'an intermediate layer overlying the first dense layer, wherein the intermediate layer comprises at least one of a porous microstructure comprising a porosity of greater than about 12 volume percent or a lamellar microstructure; and', 'a second dense layer overlying the intermediate layer, wherein the second dense layer comprises at least one of a second rare earth silicate or barium strontium aluminosilicate, and wherein the second dense layer comprises a porosity of less than about 12 volume percent., 'an environmental barrier coating overlying the substrate, wherein the environmental barrier coating comprises2. The article of claim 1 , wherein at least one of the first dense layer or the second dense layer comprises a porosity of less than about 5 volume percent.3. The article of claim 1 , wherein the intermediate layer comprises the porous microstructure claim 1 , wherein the intermediate layer comprises at least one of a rare earth monosilicate claim 1 , a rare earth disilicate claim 1 , or barium strontium aluminosilicate claim 1 , and wherein the porosity of the intermediate layer is ...

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.

Inks for inkjet printers

Method for decorating green or fired ceramic bodies by inkjet printing comprising the use of a ceramic inkjet ink which is prepared by milling a ceramic inorganic pigment in an organic medium in the presence of a dispersant which is the reaction product of a polyethyleneimine and a ricinoleic acid polyester, until the average particle size of the pigment is between 0.1 and 0.8 μm.

Coatings for dissipating vibration-induced stresses in components and components provided therewith

A coating material suitable for use in high temperature environments and capable of providing a damping effect to a component subjected to vibration-induced stresses. The coating material defines a damping coating layer of a coating system that lies on and contacts a substrate of a component and defines an outermost surface of the component. The coating system includes at least a second coating layer contacted by the damping coating layer. The damping coating layer contains a ferroelastic ceramic composition having a tetragonality ratio, c/a, of greater than 1 to 1.02, where “c” is a c axis of a unit cell of the ferroelastic ceramic composition and “a” is either of two orthogonal axes, a and b, of the ferroelastic ceramic composition.

Monolithic separation membrane structure and method of manufacture thereof

A monolithic separation membrane structure comprises a substrate, a first support layer and a separation membrane. The substrate is composed of a porous material and including a plurality of through holes. The first support layer is formed on an inner surface of the plurality of through holes. The separation membrane arranged in the first support layer. The first support layer includes an aggregate material having alumina as a main component, an inorganic binder have titania as a main component, and a sintering additive having at least one of silica and magnesia as a main component.

ION BEAM SPUTTERING WITH ION ASSISTED DEPOSITION FOR COATINGS ON CHAMBER COMPONENTS

An article comprises a body and a conformal protective layer on at least one surface of the body. The conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein the plasma resistant rare earth oxide is selected from a group consisting of YF, ErAlO, ErAlO, and a ceramic compound comprising YAlOand a solid-solution of YO—ZrO. 1. An article comprising:a body; and{'sub': 3', '4', '2', '9', '3', '4', '2', '9', '2', '3', '2, 'a conformal protective layer on at least one surface of the body, wherein the conformal protective layer is a plasma resistant rare earth-containing film having a thickness of less than 1000 μm, wherein a porosity of the conformal protective layer is less than 1%, and wherein the plasma resistant rare earth-containing film is selected from a group consisting of YF, ErAlO, ErAlO, and a ceramic compound comprising YAlOand a solid-solution of YO—ZrO.'}2. The article of claim 1 , the conformal protective layer having been formed by ion beam sputtering with ion assisted deposition.3. The article of claim 1 , wherein the conformal protective layer has a thickness of 0.2-20 μm.4. The article of claim 1 , wherein the porosity of the conformal protective layer is below 0.1%.5. The article of claim 1 , wherein the plasma resistant rare earth-containing film comprises the ceramic compound comprising YAlOand the solid-solution of YO—ZrO claim 1 , wherein the ceramic compound has a composition of 40 mol % to less than 100 mol % of YO claim 1 , over 0 mol % to 60 mol % of ZrO claim 1 , and over 0 mol % to 9 mol % of AlO.6. The article of claim 1 , wherein the plasma resistant rare earth-containing film comprises the ceramic compound comprising YAlOand the solid-solution of YO—ZrO claim 1 , wherein the ceramic compound has a composition of 40-60 mol % of YO claim 1 , 31-50 mol % of ZrO claim 1 , and 10-20 mol % of AlO.7. The article of claim 1 , wherein the plasma resistant rare earth-containing film ...

ION BEAM SPUTTERING WITH ION ASSISTED DEPOSITION FOR COATINGS ON CHAMBER COMPONENTS

An article comprises a body and a conformal protective layer on at least one surface of the body. The conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein the plasma resistant rare earth oxide film is selected from a group consisting of an Er—Y composition, an Er—Al—Y composition, an Er—Y—Zr composition, and an Er—Al composition. 1. An article comprising:a body; anda conformal protective layer on at least one surface of the body, wherein the conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein a porosity of the conformal protective layer is less than 1%, and wherein the plasma resistant rare earth oxide film has a composition selected from a group consisting of an Er—Y oxide composition, an Er—Al—Y oxide composition, an Er—Y—Zr oxide composition, and an Er—Al oxide composition.2. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Y composition claim 1 , and wherein the Er—Y oxide composition comprises 80 wt % ErOand 20 wt % YO.3. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Al—Y composition claim 1 , and wherein the Er—Al—Y oxide composition comprises 70 wt % ErO claim 1 , 10 wt % AlO claim 1 , and 20 wt % YO.4. The article of claim 1 , wherein the plasma resistant rare earth oxide film comprises the Er—Y—Zr composition claim 1 , and wherein the Er—Y—Zr oxide composition comprises 70 wt % ErO claim 1 , 20 wt % YO claim 1 , and 10 wt % ZrO.5. The article of claim 1 , the conformal protective layer having been formed by ion beam sputtering with ion assisted deposition.6. The article of claim 1 , wherein the conformal protective layer has a thickness of 0.2-20 μm.7. The article of claim 1 , wherein a porosity of the conformal protective layer is below 0.1%.8. The article of claim 1 , further comprising:a second protective layer on the conformal ...

Thermal and environmental barrier coating for ceramic substrates

A thermal and environmental barrier coating composed of ceramic hollow microspheres sintered together. In one embodiment the microspheres are sintered together with a powder of another material that acts as a binder, or with a powder of a material that may be the same as the material of the hollow microspheres, forming a matrix in which the hollow microspheres are embedded. The hollow microspheres may be composed of a material with a high temperature capability, and with a low coefficient of thermal expansion.

Thermal spray deposited coating

In one example, a method for forming an environmental barrier coating (EBC) on a substrate. The method may include heating the substrate before and/or during deposition of EBC on the substrate using an external burner and/or resistive electrical heating. Additionally, or alternatively, the as-deposited EBC may be heat treated using an external burner and/or resistive electrical heating. In some examples, the techniques of the disclosure are configured to increase or otherwise tailor the amount of crystalline phase in the EBC.

Plasma processing device member, plasma processing device comprising said plasma processing device member, and method for manufacturing plasma processing device member

A plasma processing device member according to the disclosure includes a base material and a film formed of an oxide, or fluoride, or oxyfluoride, or nitride of a rare-earth element, the film being disposed on at least part of the base material, the film including a surface to be exposed to plasma, the surface having an area occupancy of open pores of 8% by area or more, and an average diameter of open pores of 8 μm or less.

SANITARY WARE

Disclosed is a process for producing a sanitary ware. The sanitary ware includes a glaze layer and a photocatalyst layer provided on the glaze layer. The photocatalyst layer is an oxide film including a co-fired product of a precursor of titanium oxide and a precursor of zirconium oxide and contains 65 to 85% by mass of titanium oxide and 15 to 35% by mass of zirconium oxide. The process includes the steps of applying a solution containing at least a precursor of titanium oxide and a precursor of zirconium oxide on a surface of a sanitary ware free from a photocalyst layer, and then firing the coating to form a photocatalyst layer. 1. A process for producing a sanitary ware which comprises a glaze layer and a photocatalyst layer provided on the glaze layer , wherein the photocatalyst layer is an oxide film comprising a co-fired product of a precursor of titanium oxide and a precursor of zirconium oxide and contains 65 to 85% by mass of titanium oxide and 15 to 35% by mass of zirconium oxide , applying a solution containing at least a precursor of titanium oxide and a precursor of zirconium oxide on a surface of a sanitary ware free from a photocalyst layer and then', 'firing the coating to form a photocatalyst layer., 'the process comprising the steps of'}2. The process according to claim 1 , wherein the firing is carried out at a temperature of 700 to 800° C.3. The process according to claim 1 , wherein photocatalyst layer has methylene blue decomposition index of 5 or more.4. The process according to claim 1 , wherein photocatalyst layer has a thickness of 50 to 200 nm.5. The process according to claim 1 , wherein the precursor of titanium oxide is a titanium alkoxide or a titanium chelate.6. The process according to claim 1 , wherein the titanium alkoxide is represented by general formula Ti(OR)wherein OR represents a Calkoxy group claim 1 , acetyl acetonate claim 1 , or ethyl acetoacetate.7. The process according to claim 6 , wherein the titanium alkoxide is one ...

CERAMIC MEMBRANE FILTER AND METHOD FOR PRODUCING THE SAME

A ceramic membrane filter includes a porous substrate including cells through which a fluid flows, an intermediate membrane formed on the porous substrate, and a separation membrane formed on the intermediate membrane. In this ceramic membrane filter, the percentage of the number of cells having cracks with a size of 4 μm or less relative to the total number of cells is 9% or less. 1. A ceramic membrane filter comprising:a substrate including cells through which a fluid flows;an intermediate membrane formed on the substrate; anda separation membrane formed on the intermediate membrane,wherein a percentage of the number of cells having cracks with a size of 4 μm or less relative to the total number of cells is 9% or less.2. The ceramic membrane filter according to claim 1 , wherein an initial bubbling pressure in water is 0.08 MPa or more and a percentage of the number of bubbling cells relative to the total number of cells is 9% or less.3. The ceramic membrane filter according to claim 1 , wherein the separation membrane has an average thickness of 5 μm or more and 20 μm or less.4. The ceramic membrane filter according to claim 1 , wherein the intermediate membrane has an average thickness of 120 μm or more and 450 μm or less.5. The ceramic membrane filter according to claim 1 , wherein the intermediate membrane has an average pore size of 0.1 μM or more and 0.6 μm or less.6. The ceramic membrane filter according to claim 1 , wherein the intermediate membrane contains aluminum oxide or titanium oxide as a main raw material and contains clay or titanium oxide as a sintering agent.7. A method for producing a ceramic membrane filter claim 1 , the method comprising:a formation step of forming a raw material layer for an intermediate membrane on a substrate using a raw material slurry prepared by mixing an organic binder, a ceramic raw material, and a solvent, the organic binder containing a dry crack inhibitor that is a resin having a chain structure and a molecular ...

METHOD FOR REPAIRING COMPOSITE COMPONENTS USING FILLER MATERIAL

A method for repairing composite components includes positioning repair material within a repair region of a composite component formed of a composite material. Furthermore, the method includes filling a feature defined by the composite component with a filler material, with the filler material being a precursor to the composite material. Additionally, after filling the feature with the filler material, the method includes infiltrating the composite component with an infiltrant to densify the repair region and the filler material such that the feature is filled with new material. 1. A method for repairing composite components , the method comprising:positioning repair material within a repair region of a composite component formed of a composite material;filling a feature defined by the composite component with a filler material, the filler material being a precursor to the composite material;after filling the feature with the filler material, infiltrating the composite component with an infiltrant to densify the repair region and the filler material such that the feature is filled with new material.2. The method of claim 1 , wherein the filler material is a powder.3. The method of claim 1 , wherein the filler material is a slurry.4. The method of claim 1 , wherein the filler material is silicon carbide.5. The method of claim 4 , wherein the infiltrant is silicon.6. The method of claim 1 , wherein the filler material is silicon.7. The method of claim 1 , wherein the feature defined by the composite component corresponds to a first feature claim 1 , the method further comprising:after infiltrating the composite component, forming a second feature within the composite component.8. The method of claim 7 , wherein the second feature is spaced apart from the first feature.9. The method of claim 1 , wherein infiltrating the composite component comprises melt infiltrating the composite component with the infiltrant to densify the repair region and the filler material.10. ...

HIGH TEMPERATURE OXIDATION PROTECTION FOR COMPOSITES

The present disclosure provides a method for coating a composite structure, comprising applying a first slurry on a surface of the composite structure, heating the composite structure to a temperature sufficient to form a base layer on the composite structure, forming a sealing slurry comprising at least one of acid aluminum phosphate or orthophosphoric acid, applying the sealing slurry to the base layer, and heating the composite structure to a second temperature sufficient to form a sealing layer on the base layer. 1. A method for coating a composite structure , comprising:applying a first slurry on a surface of the composite structure;heating the composite structure to a temperature sufficient to form a base layer on the composite structure;forming a sealing slurry comprising an orthophosphoric acid;applying the sealing slurry to the base layer; andheating the composite structure to a second temperature sufficient to form a sealing layer on the base layer.2. The method of claim 1 , wherein a ratio of aluminum to phosphate in the sealing slurry is between 1 to 2 and 1 to 5.3. The method of claim 1 , further comprising forming the first slurry by combining a first pre-slurry composition with a first carrier fluid claim 1 , wherein the first pre-slurry composition comprises a first phosphate glass composition claim 1 , and wherein a ratio of aluminum to phosphoric acid in the first slurry is between 1 to 2 and 1 to 3.4. The method of claim 1 , further comprising applying at least one of a pretreating composition or a barrier coating to the composite structure prior to applying the first slurry to the composite structure.5. The method of claim 1 , further comprising applying a pretreating composition claim 1 , wherein the pretreating composition comprises at least one of a phosphoric acid and an acid phosphate salt claim 1 , an aluminum salt claim 1 , and an additional salt claim 1 , and wherein the composite structure is porous and the pretreating composition ...

COATED MEMBER AND METHOD OF MANUFACTURING THE SAME

Provided are a coated member in which damage of a coating film can be suppressed in a high temperature environment and the coating may be performed at low cost, and a method of manufacturing the same. A coated member includes a bond coat and a top coat sequentially laminated on a substrate made of a Si-based ceramic or a SiC fiber-reinforced SiC matrix composite, wherein the top coat includes a layer composed of a mixed phase of a (YLn)SiOsolid solution (here, Lnis any one of Nd, Sm, Eu, and Gd) and YSiOor a (YLn)SiOsolid solution (here, Ln is any one of Nd, Sm, Eu, and Gd), or a mixed phase of a (YLn)SiOsolid solution (here, Lnis any one of Sc, Yb, and Lu) and YSiOor a (YLn)SiOsolid solution (here, Ln is any one of Sc, Yb, and Lu). 1. A coated member comprising:a bond coat and a top coat sequentially laminated on a substrate made of a silicon (Si)-based ceramic or a SiC fiber-reinforced SiC matrix composite,wherein the top coat includes a first layer composed of a mixed phase of a rare earth disilicate and a rare earth monosilicate,{'sub': 1-a', '1a', '2', '2', '7', '1', '1', '1, 'the rare earth disilicate being a (YLn)SiOsolid solution (here, Lnis any one of Nd, Sm, Eu, and Gd, a is 0.1 or more and 0.5 or less when Lnis Nd, Sm, or Eu, and a is 0.2 or more and 0.5 or less when Lnis Gd), and'}{'sub': 2', '5', '1-b', '1′b', '2', '5', '1′, 'the rare earth monosilicate being YSiOor a (YLn)SiOsolid solution (here, Lnis any one of Nd, Sm, Eu, and Gd, and b is more than 0 and equal to or less than 0.5).'}2. A coated member comprising:a bond coat and a top coat sequentially laminated on a substrate made of a Si-based ceramic or a SiC fiber-reinforced SiC matrix composite,wherein the top coat includes a first layer composed of a mixed phase of a rare earth disilicate and a rare earth monosilicate,{'sub': 1-c', '2c', '2', '2', '7', '2', '2', '2, 'the rare earth disilicate being a (YLn)SiOsolid solution (here, Lnis any one of Sc, Yb, and Lu, when Lnis Sc, c is 0.05 or more ...

METHOD OF MAKING A CERAMIC MATRIX COMPOSITE THAT EXHIBITS CHEMICAL RESISTANCE

A method of making a ceramic matrix composite that exhibits chemical resistance has been developed. The method comprises depositing a compliant layer comprising boron nitride, silicon-doped boron nitride, and/or pyrolytic carbon on silicon carbide fibers, depositing a barrier layer having a high contact angle with molten silicon on the compliant layer, and depositing a wetting layer comprising silicon carbide, boron carbide, and/or pyrolytic carbon on the barrier layer. After depositing the wetting layer, a fiber preform comprising the silicon carbide fibers is infiltrated with a slurry. After slurry infiltration, the fiber preform is infiltrated with a melt comprising silicon, and then the melt is cooled, thereby forming a ceramic matrix composite. 1. A method of making a ceramic matrix composite that exhibits chemical resistance , the method comprising:depositing a compliant layer comprising boron nitride, silicon-doped boron nitride, and/or pyrolytic carbon on silicon carbide fibers;depositing a barrier layer having a high contact angle with molten silicon on the compliant layer;depositing a wetting layer comprising silicon carbide, boron carbide, and/or pyrolytic carbon on the barrier layer;after depositing the wetting layer, infiltrating a fiber preform comprising the silicon carbide fibers with a slurry; andafter infiltration with the slurry, infiltrating the fiber preform with a melt comprising silicon and then cooling the melt, thereby forming a ceramic matrix composite.2. The method of claim 1 , wherein the barrier layer comprises silicon nitrocarbide or silicon nitride.3. The method of claim 2 , wherein the barrier layer comprises amorphous silicon nitrocarbide.4. The method of claim 2 , wherein the silicon nitrocarbide includes carbon at a concentration from about 0.3 at. % to 33 at. % and nitrogen at a concentration from about 30 at. % to 60 at. %.5. The method of claim 1 , wherein the barrier layer comprises a thickness in a range from about 0.005 ...

Silicon Bond Coat With Columnar Grains and Methods of its Formation

Methods for forming a coated component, along with the resulting coated components, are provided. The method may include forming a silicon-based bond coating on a surface of a substrate and forming a barrier coating on the silicon-based bond coating. The silicon-based bond coating comprises columnar grains of crystalline silicon. Chemical vapor depositing (CVD) may be used to form the silicon-based bond coating through CVD of a silicon-containing precursor at a deposition temperature and deposition pressure that causes crystallization of the silicon material during the deposition of the silicon-based bond coating. The silicon-containing precursor may be silane, monochlorosilane, dichlorosilane, and/or trichlorosilane.

GLASS, GLASS-CERAMIC AND CERAMIC ARTICLES WITH DURABLE LUBRICIOUS ANTI-FINGERPRINT COATINGS OVER OPTICAL AND SCRATCH-RESISTANT COATINGS AND METHODS OF MAKING THE SAME

An article is described herein that includes: a glass, glass-ceramic or ceramic substrate comprising a primary surface; at least one of an optical film and a scratch-resistant film disposed over the primary surface; and an easy-to-clean (ETC) coating comprising a fluorinated material that is disposed over an outer surface of the at least one of an optical film and a scratch-resistant film. The at least one of an optical film and a scratch-resistant film comprises an average hardness of 10 GPa or more. Further, the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R) of less than 1.0 nm. 1. An article , comprising:a glass, glass-ceramic or ceramic substrate comprising a primary surface;at least one of an optical film and a scratch-resistant film disposed over the primary surface; andan easy-to-clean (ETC) coating comprising a fluorinated material that is disposed over an outer surface of the at least one of an optical film and a scratch-resistant film,wherein the at least one of an optical film and a scratch-resistant film comprises an average hardness of 10 GPa or more, and{'sub': 'q', 'wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R) of less than 1.0 nm.'}2. The article according to claim 1 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R) of less than 0.7 nm.3. The article according to claim 1 , wherein the outer surface of the at least one of an optical film and a scratch-resistant film comprises a surface roughness (R) of less than 0.5 nm.4. The article according to claim 1 , wherein an exposed surface of the ETC coating comprises an average contact angle with water of 100 degrees or more after being subjected to 2000 reciprocating cycles under a load of 1 kg according to a Steel Wool Test.5. The article according to claim 1 , wherein an ...

CERAMIC ASSEMBLY AND METHOD OF FORMING THE SAME

Ceramic assembly can comprise a ceramic article comprising a thickness defined between a first major surface and a second major surface. The thickness can be about 100 micrometers or less. The ceramic assembly can comprise a polymer coating deposited over at least an outer peripheral portion of the first major surface of the ceramic article. The polymer coating can comprise a thickness of about 30 micrometers or less. An edge strength of the ceramic assembly can be greater than an edge strength of the ceramic article by about 50 MegaPascals or more. Methods of forming a ceramic assembly can comprise depositing a polymer coating on an outer peripheral portion of a first major surface of a ceramic article. Methods can further comprise curing the polymer coating. 1. A ceramic assembly , comprising:a body comprising ceramic grains sintered to one another,wherein thickness of the body, between first and second major surfaces thereof, is in a range from 3 μm to 1 mm; andwherein the first and second major surfaces of the body have an unpolished granular profile such that the profile includes grains protruding outward from the respective major surface with a height of at least 25 nm and no more than 150 μm relative to recessed portions of the respective major surface at boundaries between the respective grains; anda coating overlaying the granular profile of the first major surface, wherein an outward facing surface of the coating is less rough than the granular profile of the first major surface.2. The ceramic assembly of claim 1 , wherein the granular profile includes grains with a height of at least 150 nanometers relative to recessed portions of the respective major surface at boundaries between the respective grains.3. The ceramic assembly of claim 2 , wherein the height of the grains is no more than 80 micrometers relative to recessed portions of the respective major surface at boundaries between the respective grains.4. The ceramic assembly of claim 3 , wherein the ...

Surface-coated boron nitride sintered body tool

In a surface-coated boron nitride sintered body tool, at least a cutting edge portion includes a cubic boron nitride sintered body and a coating layer formed on a surface of the cubic boron nitride sintered body. A layer B of the coating layer is formed by alternately laminating one or more layers of each of two or more thin-film layers having different compositions. A B1 thin-film layer as one of the thin-film layers has a thickness more than 30 nm and less than 200 nm. A B2 thin-film layer as one of the thin-film layers different from the B1 thin-film layer is formed by alternately laminating one or more layers of each of two or more compound layers having different compositions. Each of the compound layers has a thickness not less than 0.5 nm and less than 30 nm.

PRODUCTION METHOD OF CERAMIC HONEYCOMB STRUCTURE, AND CERAMIC HONEYCOMB STRUCTURE

A method for producing a ceramic honeycomb structure comprising a ceramic honeycomb body having large numbers of longitudinal cells partitioned by porous cell walls having porosity of 50% or more, and a peripheral wall formed on a peripheral surface of the ceramic honeycomb body, comprising the steps of extruding moldable ceramic material to form a honeycomb-structured ceramic green body; machining a peripheral portion of the green body or a sintered body obtained from the green body to remove part of cell walls in the peripheral portion to obtain a ceramic honeycomb body having longitudinal grooves on a peripheral surface; applying colloidal metal oxide to a peripheral surface of the ceramic honeycomb body and drying it, and then applying a coating material comprising ceramic aggregate having an average particle size of 1 μm or more to form the peripheral wall. 1. A ceramic honeycomb structure comprising a ceramic honeycomb body having a plurality of longitudinal cells partitioned by porous cell walls, and a peripheral wall formed on a peripheral surface of said ceramic honeycomb body, wherein said ceramic honeycomb body has longitudinal grooves on a peripheral surface; and wherein said peripheral wall fills said longitudinal grooves, so that cell walls constituting said grooves on the peripheral surface have smaller porosity than that of cell walls in an inner portion of said ceramic honeycomb body. This application is a divisional application of application Ser. No. 14/350,925 filed Apr. 10, 2014, which is a National Stage of International Application No. PCT/JP2012/076140 filed Oct. 9, 2012 (claiming priority based on Japanese Patent Application No. 2011-224389 filed Oct. 11, 2011), the contents of which are incorporated herein by reference in their entirety.The present invention relates to a method for producing a ceramic honeycomb structure, and a ceramic honeycomb structure.To remove toxic materials from exhaust gases discharged from internal combustion ...

THREE-LAYERED NANOCOMPOSITE WITH IMPROVED THERMAL AND HEAT PROPERTIES AND PRODUCTION THEREOF

The invention is related to three-layered nanocomposites which are created by encapsulating a ceramic particle in latex as “coreshell” and coating a conductive polymer on this structure. 1. A production method of a three-layered nanocomposite with improved thermal and heat properties comprising the steps of:preparing surfactant-water solution,while vigorously stirring the surfactant-water solution, adding ceramic particles at different rates into a structure forming acrylonitrile and copolymer,after stirring the surfactant-water solution for a certain amount of time, adding another monomer into the structure,leaving the structure in ultrasonic mixer in order to form a micro emulsion,adding an initiator into the structure,coating a latex shell on a ceramic particle core by polymerization and establishing a core-shell structure, andby adding conductive monomers into the core-shell structure established after polymerization, coating conductive polymer onto the latex coated ceramic particle.2. The production method of a three-layered nanocomposite with improved thermal and heat properties according to claim 1 , wherein all the monomers form copolymer with acrylonitrile claim 1 , and all the monomers are suitable for a system.3. The production method of a three-layered nanocomposite with improved thermal and heat properties according to claim 1 , wherein the ceramic particle is barium titanate particle.4. The production method of a three-layered nanocomposite with improved thermal and heat properties according to claim 1 , wherein the conductive polymer is selected from the group consisting of pyrrole claim 1 , aniline claim 1 , and thiophene.5. The production method of a three-layered nanocomposite with improved thermal and heat properties according to claim 1 , wherein ratios of nanoparticle claim 1 , monomers and conductive polymer monomer are defined depending on the ratio of the surfactant.6. The production method of a three-layered nanocomposite with improved ...

High temperature oxidation protection for composites

The present disclosure provides a method for coating a composite structure, comprising applying a first slurry onto a surface of the composite structure, wherein the first slurry is a sol gel comprising a metal organic salt, a first carrier fluid, and a ceramic material, and heating the composite structure to a first sol gel temperature sufficient to form a sol gel-derived base layer on the composite structure.

Cmas-resistant barrier coatings

A method includes predicting a composition of calcium-magnesium-aluminum-silicate (CMAS) to be encountered by a high temperature mechanical system during use of the high temperature mechanical system. The method further includes selecting a composition of a CMAS-resistant barrier coating layer based at least in part on the predicted composition of CMAS. The CMAS-resistant barrier coating layer includes a base composition and at least one secondary oxide selected based on the predicted composition of CMAS. The at least one secondary oxide includes at least one of an oxide of a divalent element, an oxide of a trivalent element, or an oxide of a tetravalent element. The CMAS-resistant barrier coating layer comprises greater than 0 mol. % and less than about 7 mol. % of the at least one secondary oxide.

CERAMIC HEAT SHIELDS HAVING SURFACE INFILTRATION FOR PREVENTING CORROSION AND EROSION ATTACKS PROTECTING A COMPONENT, METHOD FOR LASER DRILLING, AND COMPONENT

An improved ceramic heat shield for a gas turbine is provided. The ceramic heat shield has a porous ceramic body and according to the embodiments an infiltration coating that is provided in a surface layer of the porous ceramic body and contains an infiltration coating material designed to gas-tightly seal pores of the ceramic body. 1. A ceramic heat shield for a gas turbine , comprising:a porous ceramic body,includingan infiltration coating which is infiltrated in a surface layer of the porous ceramic body and contains an infiltration coating material which is configured for closing pores of the ceramic body in a manner as gas-tight as possible.2. The ceramic heat shield as claimed in claim 1 , wherein the porous ceramic body contains mullite or aluminum oxide claim 1 , or is composed of mullite or aluminum oxide.3. The ceramic heat shield as claimed in claim 1 , wherein the infiltration material contains yttrium aluminum garnet or is composed of yttrium aluminum garnet claim 1 , or comprises aluminum oxide claim 1 , aluminum zirconate claim 1 , or is composed thereof.4. The ceramic heat shield as claimed in claim 1 , wherein the infiltration coating is at least one of a thickness of less than 400 μm claim 1 , has 400 μm claim 1 , and is at least 10 μm thick.5. The ceramic heat shield as claimed in claim 1 , wherein the surface layer extends across an end face and across lateral faces of the porous ceramic body.6. A gas turbine or a combustion chamber having a ceramic heat shield as claimed in .7. A method for producing a ceramic heat shield for a gas turbine claim 1 , comprising the following method steps:providing a porous ceramic body;generating an infiltration coating in a surface layer of the porous ceramic body, wherein the infiltration coating contains an infiltration coating material which is configured for closing pores of the porous ceramic body in a gas-tight manner.8. The method as claimed in claim 7 , wherein the generating of the infiltration coating ...

Surface-Coated Cutting Tool

A surface-coated cutting tool including a substrate including a rake face and a flank face and a coating which covers a surface of the substrate is provided. The substrate is made of a cBN sintered material or a ceramic sintered material. The coating includes an alternating layer. The alternating layer is made by alternately stacking a first layer and a second layer different in composition from the first layer. The first layer contains Al, Cr, and N. The second layer contains Ti, Al, and N. A ratio T/T between a thickness Ti of the first layer and a thickness T of the second layer is not lower than 0.1 and lower than 1. There are thirty or more interfaces at which the first layer and the second layer are in contact with each other. 1. A surface-coated cutting tool including a substrate including a rake face and a flank face and a coating which covers a surface of the substrate ,the substrate being made of a cubic boron nitride sintered material or a ceramic sintered material,the coating including an alternating layer,the alternating layer being made by alternately stacking a first layer and a second layer different in composition from the first layer,the first layer containing Al, Cr, and N,the second layer containing Ti, Al, and N,{'b': 1', '2', '2, 'a ratio T/T between a thickness Ti of the first layer and a thickness T of the second layer being not lower than 0.1 and lower than 1, and'}there being thirty or more interfaces at which the first layer and the second layer are in contact with each other.2. The surface-coated cutting tool according to claim 1 , wherein{'b': '2', 'the thickness Ti and the thickness T are each not smaller than 0.5 nm and not greater than 200 nm.'}3. The surface-coated cutting tool according to claim 1 , wherein{'sub': x', '1-x, 'the first layer is composed of AlCrN (0.3≤x≤0.75), and'}{'sub': 1-y', 'y, 'the second layer is composed of TiAlN (0.3≤y≤0.7).'}4. The surface-coated cutting tool according to claim 1 , whereinthe alternating ...

Environmental barrier coating for enhanced resistance to attack by molten silicate deposits

An environmental barrier coating, comprising a substrate containing silicon; an environmental barrier layer applied to said substrate; said environmental barrier layer comprising a rare earth composition.

COMPOSITIONS FOR EROSION AND MOLTEN DUST RESISTANT ENVIRONMENTAL BARRIER COATINGS

Compounds are generally provided, which may be particularly used to form a layer in a coating system. In one embodiment, the compound may have the formula: ABLnHfTiDMO, where: A is Al, Ga, In, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Fe, Cr, Co, Mn, Bi, or a mixture thereof; x is about 0.01 to about 0.99; b is 0 to about 0.5, with 1-x-b being 0 to about 0.99 such that Ln is present in the compound; Ln is a rare earth or a mixture thereof that is different than A; t is 0 to about 0.99; D is Zr, Ce, Ge, Si, or a mixture thereof; d is 0 to about 0.5; the sum of t and d is less than 1 such that Hf is present in the compound; and M is Ta, Nb, or a mixture thereof. 1. A compound having the formula:{'br': None, 'sub': x', 'b', '1-x-b', '1-t-d', 't', 'd', '6, 'ABLnHfTiDMO'} A is Al, Ga, In, Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Fe, Cr, Co, Mn, Bi, or a mixture thereof;', 'x is about 0.01 to about 0.99;', 'b is 0 to about 0.5, with 1-x-b being 0 to about 0.99 such that Ln is present in the compound;', 'Ln is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, and wherein Ln is different than A in terms of composition;', 't is 0 to about 0.99;', 'D is Zr, Ce, Ge, Si, or a mixture thereof;', 'd is 0 to about 0.5;', 'the sum of t and d is less than 1 such that Hf is present in the compound; and', 'M is Ta, Nb, or a mixture thereof., 'where2. The compound of claim 1 , wherein b is 0 claim 1 , and wherein x is about 0.05 to about 0.9.3. The compound of claim 1 , wherein b is greater than 0 to about 0.5 claim 1 , and wherein x is about 0.05 to about 0.9 with the sum of x and b being less than 1.4. The compound of claim 1 , wherein b is 0 claim 1 , and wherein t is 0.5. The compound of claim 1 , wherein b is 0 claim 1 , and wherein d is 0.6. The compound of claim 1 , where: b is 0; t is 0; and d is 0.7. The compound of claim 6 , where: M is Ta.8. The compound of claim 1 , wherein A includes Al such ...

Cmc with outer ceramic layer

By cutting a surface of a CMC component which has to receive a TBC a rough surface is yielded, which is rough enough to have a good adhesion of a following ceramic coating.

Cutting tool

A cutting tool includes a base material and a coating formed on the base material. The base material is a sintered body containing 30 to 80% by volume of cubic boron nitride, and a binder. The surface in contact with the coating, of the base material, has a plurality of convex portions made of the cubic boron nitride and a plurality of concave portions made of the binder. A surface roughness Rsub of the surface in contact with the base material, is 0.1 to 0.4 μm. A surface roughness Rsurf of an outermost surface of the coating is 0 to 0.15 μm. A surface roughness Rasurf of the outermost surface of the coating is 0 to 0.1 μm. The surface roughness Rsub of the surface in contact with the coating, of the base material, is greater than the surface roughness Rsurf of the outermost surface of the coating.

High temperature oxidation protection for composites

The present disclosure provides a method for coating a composite structure, comprising forming a first slurry by combining a first pre-slurry composition comprising a first phosphate glass composition, with a primary flow modifier and a first carrier fluid, wherein the primary flow modifier comprises at least one of cellulose or calcium silicate; applying the first slurry on a surface of the composite structure to form a base layer; and heating the composite structure to a temperature sufficient to adhere the base layer to the composite structure.

HIGH TEMPERATURE OXIDATION PROTECTION FOR COMPOSITES

The present disclosure provides a method for coating a composite structure, comprising applying a single pretreating composition on a surface of the composite structure, the single pretreating composition comprising a first acid aluminum phosphate comprising a molar ratio of aluminum to phosphate between 1 to 2 and 1 to 3, and heating the composite structure to a first temperature sufficient to form an aluminum phosphate polymer layer on the composite structure. 1. An article comprising:a carbon-carbon composite structure; and an aluminum phosphate polymer layer disposed on an outer surface of the carbon-carbon composite structure, the aluminum phosphate polymer layer having a first molar ratio of aluminum to phosphate between 1 to 2 and 1 to 3;', 'a base layer disposed on the aluminum phosphate polymer layer, wherein the base layer comprises a first pre-slurry composition comprising a first phosphate glass composition; and', 'a sealing layer disposed on the base layer, wherein the sealing layer comprises a sealing pre-slurry composition comprising a second phosphate glass composition., 'an oxidation protection system including2. The article of claim 1 , wherein the base layer comprises a second molar ratio of aluminum to phosphate between 1 to 2 and 1 to 3. This application is a divisional of, claims priority to and the benefit of, U.S. Ser. No. 15/194,034 filed Jun. 27, 2016 and entitled “HIGH TEMPERATURE OXIDATION PROTECTION FOR COMPOSITES,” which is hereby incorporated by reference.The present disclosure relates generally to carbon-carbon composites and, more specifically, to oxidation protection systems for carbon-carbon composite structures.Oxidation protection systems for carbon-carbon composites are typically designed to minimize loss of carbon material due to oxidation at operating conditions, which include temperatures as high as 900° C. (1652° F.). Phosphate-based oxidation protection systems may reduce infiltration of oxygen and oxidation catalysts into ...

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.

SANITARY WARE HAVING PHOTOCATALYST LAYER

Disclosed is a sanitary ware having a photocatalyst layer which has excellent durability even in an environment where the photocatalyst layer is exposed to an acid and an alkali alternately. The sanitary ware comprises a glaze layer, an intermediate layer provided on the glaze layer, and a photocatalyst layer provided on the intermediate layer, wherein the photocatalyst layer comprises titanium oxide in the amount of 95 mass % to 75 mass % and zirconium oxide in the amount of 5 mass % to 25 mass % and the intermediate layer comprises silica in the amount of 98 mass % to 85 mass %, and titanium oxide and/or zirconium oxide in the amount of 2 mass % to 15 mass %. 1. A sanitary ware comprising a glaze layer , an intermediate layer provided on the glaze layer , and a photocatalyst layer provided on the intermediate layer , whereinthe photocatalyst layer comprises titanium oxide and zirconium oxide wherein the amount of titanium oxide is 95 mass % to 75 mass % and the amount of zirconium oxide is 5 mass % to 25 mass % andthe intermediate layer comprises silica and titanium oxide and/or zirconium oxide wherein the amount of silica is 98 mass % to 85 mass %, and the amount of titanium oxide or zirconium oxide is 2 mass % to 15 mass % when the intermediate layer comprises either of titanium oxide or zirconium oxide or the total amount of titanium oxide and zirconium oxide is 2 mass % to 15 mass % when the intermediate layer comprises both titanium oxide and zirconium oxide.2. The sanitary ware according to claim 1 , wherein the intermediate layer comprises silica and titanium oxide claim 1 , wherein the content of the silica is 90 to 98 mass % claim 1 , and the content of the titanium oxide is 2 to 10 mass %.3. The sanitary ware according to claim 2 , wherein the content of the silica is 90 to 95 mass % claim 2 , and the content of the titanium oxide is 5 to 10 mass %.4. The sanitary ware according to claim 1 , wherein the intermediate layer comprises silica and zirconium ...

CERAMIC MATRIX COMPOSITE COMPONENT COATED WITH ENVIRONMENTAL BARRIER COATINGS AND METHOD OF MANUFACTURING THE SAME

A ceramic matrix composite component coated with environmental barrier coatings includes a substrate formed of a silicide-containing ceramic matrix composite, a silicon carbide layer deposited on a surface of the substrate, a silicon layer deposited on a surface of the silicon carbide layer, a mixed layer made of a mixture of mullite and ytterbium silicate and deposited on a surface of the silicon layer, and an oxide layer deposited on a surface of the mixed layer. 1. A ceramic matrix composite component coated with environmental barrier coatings , comprising:a substrate formed of a silicide-containing ceramic matrix composite;a silicon carbide layer deposited on a surface of the substrate;a silicon layer deposited on a surface of the silicon carbide layer;a mixed layer made of a mixture of mullite and ytterbium silicate and deposited on a surface of the silicon layer; andan oxide layer deposited on a surface of the mixed layer.2. The ceramic matrix composite component according to claim 1 , wherein the ytterbium silicate is any one of YbSiOand YbSiO.3. The ceramic matrix composite component according to claim 1 , whereinthe silicon carbide layer has a thickness of not less than 10 μm nor more than 50 μm,the silicon layer has a thickness of not less than 50 μm nor more than 140 μm, andthe mixed layer has a thickness of not less than 75 μm nor more than 225 μm.4. The ceramic matrix composite component according to claim 3 , wherein the silicon layer has a thickness of not less than 50 μm nor more than 100 μm.5. The ceramic matrix composite component according to claim 1 , wherein the oxide layer is formed of oxide mainly containing at least one selected from the group consisting of hafnium oxide claim 1 , hafnium silicate claim 1 , lutetium silicate claim 1 , ytterbium silicate claim 1 , titanium oxide claim 1 , zirconium oxide claim 1 , aluminum titanate claim 1 , aluminum silicate claim 1 , and lutetium hafnium oxide.6. The ceramic matrix composite component ...

Compliant layer for ceramic components and methods of forming the same

An apparatus includes a ceramic matrix composite (CMC) component and an interface coating on the CMC component, wherein the interface coating includes a layer of at least one of the following compositions: 40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si; 90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or 60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti.

CERAMIC TILE AND METHOD FOR MANUFACTURING CERAMIC TILES

Ceramic tile having a ceramic base layer and a cover glaze layer including a printed pattern, where the surface of the ceramic tile has a relief having structural features corresponding to the printed pattern. The structural features are at least partly formed in the surface of the ceramic base layer and manifest themselves through the glaze layer to the upper surface of the tile. Additionally, a method which allows for the manufacturing of such ceramic tiles. 115.-. (canceled)16. A method for manufacturing a set of ceramic tiles , wherein each ceramic tile has a ceramic base layer and a cover glaze layer with a printed pattern , wherein each tile of the set has its own printed pattern and wherein the method comprises the following steps for each tile of the set:the step of forming the ceramic base layer;the step of providing a glaze layer on said ceramic base layer;the step of printing a pattern on said glaze layer;the step of firing the ceramic base layer with the glaze layer having the printed pattern;wherein the method further comprises the step of forming a relief having structural features corresponding to said printed pattern, wherein each tile of the set has its own surface structure texture, andwherein the method further comprises the step of detecting the surface structure of the tile or the step of detecting the printed pattern.17. The method of claim 16 , wherein said relief is formed as a plurality of excavations present in the generally plane upper surface of the ceramic tile.18. The method of claim 16 , wherein said relief is formed on the surface of said cover glaze layer before said step of firing and/or at the same time as said step of firing.19. The method of claim 16 , wherein said relief is formed on the surface of said ceramic base layer before said step of providing a glaze layer.20. The method of claim 16 , wherein said relief is formed on the surface of said ceramic base layer before said step of printing a pattern on said glaze layer.21. ...

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.

SANITARY WARE

A sanitary ware includes a base, and a glaze layer formed on an outer side than the base. In color representation by the Lab color system, an absolute value of a difference (ΔL) between an L value obtained from observation of a part with the glaze layer formed thereon and an L value obtained from observation of a part with the glaze layer substantially unformed thereon is not more than 12, or a color difference (ΔE) between a color in observation of the part with the glaze layer formed thereon and a color in observation of the part with the glaze layer 5 substantially unformed thereon is not more than 14. Even though the thickness of the glaze layer varies so that the color of the base may be shown more or less through the glaze layer, there is almost no difference in color seen from the glaze layer side. 1. A sanitary ware , comprising:a base; anda glaze layer formed on an outer side than the base,whereinin color representation by Lab color system,an absolute value of a difference (ΔL) between an L value obtained from observation of a part with the glaze layer formed thereon and an L value obtained from observation of a part with the glaze layer substantially unformed thereon is not more than 12, ora color difference (ΔE) between a color in observation of the part with the glaze layer formed thereon and a color in observation of the part with the glaze layer substantially unformed thereon is not more than 14.2. The sanitary ware of claim 1 , whereinthe absolute value of the difference (ΔL) is not more than eight, orthe color difference (ΔE) is not more than eight.3. The sanitary ware of claim 1 , whereinthe absolute value of the difference (ΔL) is not more than six, orthe color difference (ΔE) is not more than six.4. The sanitary ware of claim 1 , wherein the L value obtained from observation of the part with the glaze layer formed thereon is not less than 80.5. The sanitary ware of claim 1 , wherein the L value obtained from observation of the part with the glaze ...

METHOD FOR MANUFACTURING TRANSFER SHEET AND ITS USE

A method for manufacturing a transfer sheet capable of forming a coat layer for protecting an image with high positional accuracy is provided. The method includes a step of printing an ink for forming an image on a water-soluble layer by an inkjet method to form an image layer, and a step of printing an ink containing a photocurable compound on the image layer by the inkjet method to form a coat layer, and the water-soluble layer, the image layer, or the coat layer contains a hot-melt inorganic substance. 1. A method for manufacturing a transfer sheet , comprising:an image layer forming step of forming an image layer by printing an ink for forming an image on a base material having a water-soluble layer containing a water-soluble component by an inkjet method; anda coat layer forming step of printing an ink containing a photocurable compound on the image layer by an inkjet method to form a coat layer,wherein at least one of the water-soluble layer, the ink for forming the image, and the ink containing the photocurable compound contains a hot-melt inorganic substance.2. The method for manufacturing a transfer sheet according to claim 1 , whereinthe ink containing the photocurable compound contains the hot-melt inorganic substance.3. The method for manufacturing a transfer sheet according to claim 1 , whereinthe hot-melt inorganic substance is glass.4. The method for manufacturing a transfer sheet according to claim 2 , whereinthe hot-melt inorganic substance is glass.5. A transfer sheet manufactured by the method for manufacturing a transfer sheet according to .6. A method for manufacturing a printed matter claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a transfer step of immersing the transfer sheet manufactured by the method for manufacturing a transfer sheet according to to dissolve the water-soluble layer, so as to adhere a printing object to the image layer and the coat layer separated from the base material, from a side of the image ...

ENVIRONMENTAL RESISTANT COATING MEMBER

An environmental resistant coating member includes a SiC long fiber-reinforced ceramics substrate and an environmental barrier coating layer provided on the whole surface of the SiC long fiber-reinforced ceramics substrate. The environmental barrier coating layer includes a SiAlON bonding layer laminated on the SiC long fiber-reinforced ceramics substrate, a mullite layer laminated on the SiAlON bonding layer, a reaction inhibition layer laminated on the mullite layer, and a gradient layer formed on the reaction inhibition layer that gradually changes from a rare-earth disilicate to a rare-earth monosilicate. The reaction inhibition layer includes at least one of an alumina layer, a garnet layer, and a rare-earth (mono)silicate layer. When the reaction inhibition layer includes two or more of these layers, the layers are formed in the order of the alumina layer, the garnet layer, and the rare-earth (mono)silicate layer from a mullite layer side toward a gradient layer side. 16.-. (canceled)7. An environmental resistant coating member comprising:a SiC long fiber-reinforced ceramics substrate; and an environmental barrier coating layer provided on a whole surface of the SiC long fiber-reinforced ceramics substrate, whereinthe environmental barrier coating layer comprises a SiAlON bonding layer formed on the SiC long fiber-reinforced ceramics substrate, a mullite layer formed on the SiAlON bonding layer, a reaction inhibition layer formed on the mullite layer, and a gradient layer formed on the reaction inhibition layer and having a composition that gradually changes from a rare-earth disilicate to a rare-earth monosilicate, and{'sub': 2', '3', '3', '5', '12', '2', '5', '2', '2', '7, 'the reaction inhibition layer is at least one of an AlOlayer, a REAlO(wherein RE is a rare-earth element) layer, and a [(1-x)RESiO-xRESiO] (wherein RE is a rare-earth element and 0≤x≤1) layer.'}8. The environmental resistant coating member according to claim 7 , wherein a matrix of the ...

Antimicrobial glaze and porcelain enamel via double layer glaze with high zinc content

A cost-effective and practical antimicrobial glaze system and glazing process is disclosed herein. The antimicrobial glaze/enamel may comprise at least two layers: a base layer and a top layer. The base layer may contain a typical or normal glaze widely used in sanitary ware, having a low level of zinc oxide. The base layer glaze may be directly sprayed on the clay body surface. A thin top glaze layer is sprayed on top of the base glaze layer and the top layer may contain a high level of zinc oxide. 129-. (canceled)30. Sanitary ware comprising a multilayer antimicrobial ceramic glaze , the ceramic glaze comprisinga base glaze layer containing from 0.0 percent by weight to about 8.0 percent by weight ZnO; anda top glaze layer containing from about 8.0 percent by weight to about 35.0 weight percent ZnO.311. The sanitary ware of claim , wherein the top layer contains from about 10.0 weight percent to about 25.0 weight percent ZnO.321. The sanitary ware of claim , wherein the base layer contains ZnO.331. The sanitary ware of claim , wherein the base layer contains from about 0.0 weight percent to about 6.0 weight percent ZnO.341. The sanitary ware of claim , wherein the ceramic glaze is substantially free of surface defects.351. The sanitary ware of claim , wherein the base glaze layer is from about 300 μm to about 1000 μm thick.361. The sanitary ware of claim , wherein the base glaze layer is from about 300 μm to about 600 μm thick.371. The sanitary ware of claim , wherein the top glaze layer is from about 25 μm to about 250 μm thick.381. The sanitary ware of claim , wherein the top glaze layer is from about 25 μm to about 150 μm thick.391. The sanitary ware of claim , wherein the top glaze layer is from about 100 μm to about 200 μm thick.401. The sanitary ware of claim , wherein the top glaze layer is from about 150 μm to about 300 μm thick.411. The sanitary ware of claim , wherein the top glaze layer is from about 200 μm to about 300 μm thick.421. The sanitary ware ...

Cubic boron nitride sintered body cutting tool

A cBN sintered material cutting tool is provided. The cBN cutting tool includes a cutting tool body, which is a sintered material including cBN grains and a binder phase, wherein the sintered material comprises: the cubic boron nitride grains in a range of 40 volume % or more and less than 60 volume %; and Al in a range from a lower limit of 2 mass % to an upper limit Y, satisfying a relationship, Y=−0.1X+10, Y and X being an Al content in mass % and a content of the cubic boron nitride grains in volume %, respectively, the binder phase comprises: at least a Ti compound; Al 2 O 3 ; and inevitable impurities, the Al 2 O 3 includes fine Al 2 O 3 grains with a diameter of 10 nm to 100 nm dispersedly formed in the binder phase, and there are 30 or more of the fine Al 2 O 3 grains generated in an area of 1 μm×1 μm in a cross section of the binder phase.

VISUAL INDICATOR OF COATING THICKNESS

In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer. 1. An article comprising:a substrate; anda coating on the substrate, wherein the coating comprises at least one abradable layer, wherein the at least one abradable layer comprises a matrix material and a plurality of microspheres located within the at least one abradable layer at a predetermined depth from an outer surface of the coating, wherein the plurality of microspheres define a visual characteristic distinct from the matrix material, and wherein the plurality of microspheres comprise at least one rare earth oxide, at least one rare earth silicate, or at least one rare earth oxide and at least one rare earth silicate.2. The article of claim 1 , wherein the coating further comprises an environmental barrier coating layer claim 1 , wherein the environmental barrier coating layer comprises at least one rare earth silicate claim 1 , and wherein the environmental barrier coating layer is between the substrate and the at least one abradable layer.3. The article of claim 1 , wherein the coating further comprises a bond layer between the substrate and the at least one abradable layer claim 1 , wherein the bond layer comprises silicon.4 ...

Thermal Barrier Material Formed Of Inorganic Material, Material Set For Producing Same, Material For Base Layers And Method For Producing Same

A novel heat shielding material made of an inorganic material is proposed. 1. A heat shielding material made of an inorganic material , comprising:a base material;a underlayer layered on the base material and having a total solar reflectance (TSR) greater than a TSR of the base material; anda top layer layered on the underlayer, whereinthe top layer has a thickness such that the underlayer is not visually recognizable, and transmits infrared rays, andthe underlayer includes a reaction region between a material of the underlayer and a material of the top layer, and a main reflection region where the material of the top layer is not present.2. The heat shielding material according to claim 1 , wherein the main reflection region has a thickness of 10 m or more.3. The heat shielding material according to claim 1 , wherein a halo intensity of the main reflection region determined by an X-ray diffraction method is 230 cps or less.4. The heat shielding material according to claim 1 , wherein the material of the underlayer is represented by a Seger formula: RO: 0.1 to 0.5 claim 1 , RO: 0.5 to 0.9 claim 1 , BO: 0.0 to 1.0 claim 1 , AlO: 2.2 to 10.2 claim 1 , SiO: 7.2 to 29.2 claim 1 , TiO: 0.0 to 0.5 claim 1 , ZrSiO: 0.0 to 5.5 claim 1 , SiO/AlO: 0.7 to 23.8 claim 1 , where RO is MgO claim 1 , CaO claim 1 , or BaO claim 1 , and RO is LiO claim 1 , NaO claim 1 , or KHO.6. A heat shielding material comprising:a base material;a underlayer having a TSR of 80% or more; and{'sub': 2', '3, 'a top layer containing a (Cr,Fe)Osolid solution having a ratio (molar ratio) of Cr to Fe of 93 to 97:7 to 3 or a ratio (molar ratio) of Cr to Fe of 80 to 97:20 to 3 and having a non-spinel structure, and having an L* value of 30 or less, wherein'}the top layer has a thickness such that the underlayer is not visually recognizable, and transmits infrared rays, andthe underlayer includes a reaction region between a material of the underlayer and a material of the top layer, and a main reflection ...

MAGNETIC POWDER AND PREPARATION METHOD THEREOF

Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder. 1. A method of preparing a magnetic powder , the method comprising:plasma-treating a gas;surface-treating a SmFeN magnetic powder with the plasma-treated gas; andforming a coat layer on a surface of the surface-treated SmFeN magnetic powder.2. The method of preparing a magnetic powder according to claim 1 ,{'sub': '4', 'wherein the gas is CF, argon, nitrogen, or air.'}3. The method of preparing a magnetic powder according to claim 2 ,{'sub': '4', 'wherein the gas is CF.'}4. A magnetic powder claim 2 , comprising:a SmFeN magnetic powder;a plasma-treated layer formed on a surface of the SmFeN magnetic powder; anda coat layer formed on a surface of the plasma-treated layer.5. The magnetic powder according to claim 4 ,wherein the plasma-treated layer contains fluorine.6. The magnetic powder according to claim 5 ,wherein the fluorine is present in an amount of 100 ppm or higher and 2000 ppm or lower. This application claims priority to Japanese Patent Application No. 2018-180239 filed on Sep. 26, 2018. The disclosure of Japanese Patent Application No. 2018-180239 is hereby incorporated by reference in its entirety.The present invention relates to a magnetic powder and a method of preparing the powder.SmFeN-based bonded magnets are known as composite materials which may be used in motors for use in aqueous environments such as water pumps. For example, JP 2000-47802 A and JP 2005-286315 A disclose methods of forming a silica film on the surface of an oxidation-susceptible Sm-containing magnetic powder by a sol-gel process.However, ...

ION BEAM SPUTTERING WITH ION ASSISTED DEPOSITION FOR COATINGS ON CHAMBER COMPONENTS

An article comprises a body and a conformal protective layer on at least one surface of the body. The conformal protective layer is a plasma resistant rare earth oxide film having a thickness of less than 1000 μm, wherein the plasma resistant rare earth oxide film consists essentially of 40 mol % to less than 100 mol % of YO, over 0 mol % to 60 mol % of ZrO, and 0 mol % to 9 mol % of AlO. 1. An article comprising:a body; and{'sub': 2', '3', '2', '2', '3, 'a conformal protective layer on at least one surface of the body, wherein the conformal protective layer is a plasma resistant rare earth-containing film having a thickness of less than 1000 μm, wherein a porosity of the conformal protective layer is less than 1%, and wherein the plasma resistant rare earth-containing film consists essentially of 40 mol % to less than 100 mol % of YO, over 0 mol % to 60 mol % of ZrO, and 0 mol % to 9 mol % of AlO.'}2. The article of claim 1 , the conformal protective layer having been formed by ion beam sputtering with ion assisted deposition.3. The article of claim 1 , wherein the conformal protective layer has a thickness of 0.2-20 μm.4. The article of claim 1 , wherein the porosity of the conformal protective layer is below 0.1%.5. The article of claim 1 , wherein the plasma resistant rare earth-containing film consists of 40 mol % to less than 100 mol % of YOand over 0 mol % to 60 mol % of ZrO.6. The article of claim 1 , further comprising:a second protective layer on the conformal protective layer, wherein the second protective layer is an additional plasma resistant rare earth oxide film having a thickness of 0.2-30 μm, and wherein the conformal protective layer comprises a coloring agent that causes the conformal protective layer to have a different color than the second protective layer.7. The article of claim 1 , wherein the body is a bulk sintered ceramic body comprising at least one of AlO claim 1 , YO claim 1 , SiO claim 1 , SiN claim 1 , Si claim 1 , and SiC.8. The ...

CERAMIC TILE AND METHOD FOR MANUFACTURING CERAMIC TILES

Ceramic tile having a ceramic base layer and a cover glaze layer including a printed pattern, where the surface of the ceramic tile has a relief having structural features corresponding to the printed pattern. The structural features are at least partly formed in the surface of the ceramic base layer and manifest themselves through the glaze layer to the upper surface of the tile. Additionally, a method which allows for the manufacturing of such ceramic tiles. 115.-. (canceled)16. A ceramic tile having a ceramic base layer and a cover glaze layer comprising a printed pattern , wherein the surface of the ceramic tile comprises a relief having structural features corresponding to said printed pattern and wherein said structural features are at least partially formed in the surface of the ceramic base layer and manifest themselves through the glaze layer to the upper surface of the tile.17. The ceramic tile according to claim 16 , wherein printed pattern extends substantially over the entire surface of the ceramic tile.18. The ceramic tile according to claim 16 , wherein said printed pattern represents a wood or stone pattern claim 16 , preferably representing only one one-piece wooden plank or stone tile over the entire surface of the ceramic tile.19. The ceramic tile according to claim 16 , wherein said printed pattern is a wood pattern and said structural features are lines following the course of the grain lines of the wood pattern or a plurality of successive dashes having a configuration following the grain lines of the wood pattern.20. The ceramic tile according to claim 16 , wherein the tile is rectangular and oblong claim 16 , and the printed pattern is a wood printed pattern with the grain lines running substantially in the longitudinal direction of the tile.21. The ceramic tile according to claim 16 , wherein said relief is partially formed on the surface of said cover glaze layer.22. The ceramic tile according to claim 16 , wherein said cover glaze layer at ...

Methods and compositions for repair of composite materials

A method for repair of composite materials includes applying a formulation to a ceramic matrix composite substrate. The formulation comprises a liquid carrier, a ceramic filler dispersed within the carrier, and a polymeric binder disposed in the carrier. The method further includes removing the carrier from the formulation to form a green composition; pyrolyzing the green composition to form a porous composition; disposing a liquid metal or metalloid within the pores of the porous composition to form an intermediate composite composition; and converting the liquid metal or metalloid to solid state to form a solid composite composition.

Surface-coated boron nitride sintered body tool

A surface-coated boron nitride sintered body tool is provided, in which at least a cutting edge portion includes a cubic boron nitride sintered body and a coating film formed on the cubic boron nitride sintered body. The coating film includes an A layer, a B layer and a C layer. The C layer is provided between the A layer and the B layer. The A layer contains Ti and the like. The B layer is formed by alternately stacking a B1 compound layer containing Ti, Si and the like and a B2 compound layer containing Al and the like. The C layer includes McLc zc (Mc represents one or more of group 4 elements, group 5 elements and group 6 elements in a periodic table, Al and Si; Lc represents one or more of B, C, N, and O; and zc is 0.05 or more and 0.85 or less).

CERAMIC HONEYCOMB BODY WITH SKIN

A ceramic honeycomb body comprising a peripheral skin layer and a fiber extending around the outer periphery of a honeycomb core, the fiber embedded in the peripheral skin layer is described. A method of making a honeycomb body having a fiber extending around the outer periphery of a honeycomb core and embedded in the peripheral skin layer is also described. 1. A honeycomb body comprising:a honeycomb core comprising an inlet face and an outlet face defining a honeycomb core length, an outer periphery defining a circumference, and a plurality of channel walls extending from the inlet face to the outlet face defining cell channels therebetween;a peripheral skin layer on the outer periphery of the honeycomb core, the peripheral skin layer having a thickness in a range of from about 1 mm to about 3 mm, the peripheral skin layer thickness defining a midpoint and an outer surface; anda continuous single fiber or bundle of fibers extending around the outer periphery and embedded between the midpoint and the outer surface of the peripheral skin layer.2. (canceled)3. (canceled)4. (canceled)5. The honeycomb body of claim 1 , wherein the fiber comprises a continuous single fiber wound around the outer periphery of the honeycomb core and extending between the inlet face and the outlet face.6. (canceled)7. The honeycomb body of claim 5 , wherein the continuous fiber is wound in an overlapping pattern around the honeycomb body.8. The honeycomb body of claim 1 , wherein the peripheral skin layer comprises 50-95 wt. % fused silica and 5-30% colloidal silica.9. The honeycomb body of claim 8 , wherein the fused silica has an average particle size in a range of from 20 micrometers to 35 micrometers.10. The honeycomb body of claim 9 , wherein the fused silica comprises −200F sieve grade fused silica.11. The honeycomb body of claim 1 , wherein the peripheral skin layer further comprises from about 5 wt. % to 25 wt. % colloidal silica.12. The honeycomb body of claim 11 , wherein the ...

Reducing impurities in ceramic matrix composites

Example techniques may include depositing a slurry on at least a predetermined surface region of a ceramic matrix composite substrate. The slurry may include a solvent and particles comprising at least one of silicon metal or silicon carbide. The slurry may be dried to form a wicking layer on the predetermined surface region. The ceramic matrix composite substrate and the wicking layer may be heated to a temperature of at least 900° C. to wick at least one wickable species from the ceramic matrix composite substrate into the wicking layer. Substantially all of the wicking layer may be removed from the predetermined surface region. Example articles may include a ceramic matrix composite substrate. A wicking layer may be disposed on at least a predetermined surface region of the ceramic matrix composite substrate. The wicking layer may include at least one wicked species wicked from the ceramic matrix composite substrate.

SURFACE-COATED CUBIC BORON NITRIDE SINTERED MATERIAL TOOL

The present invention is directed to a surface-coated cubic boron nitride sintered material tool including a cBN substrate and a hard coating layer formed on a surface of the cBN substrate and having an alternate laminated structure of A layer and B layer. A peak of the grain size distribution of cBN grains in the cBN sintered material is present within a range of a grain size from 0.50 to 1.00 μm. The A layer has a composition of (TiAl)N (0.4≤x≤0.7 in an atomic ratio). The B layer has a composition of (CrAlM)N (0.03≤y≤0.6 and 0≤z≤0.05 in an atomic ratio). An X-ray diffraction peak of a (200) plane is present at a position of a diffraction angle of 43.6 plus or minus 0.1 degrees, and a plastic deformation work ratio of the B layer is 0.35 to 0.50. 1. A surface-coated cubic boron nitride sintered material tool comprising:a tool body which is made of a cubic boron nitride sintered material; anda hard coating layer formed on a surface of the tool body, the hard coating layer being made of an alternate laminated structure, in which at least one A layer and at least one B layer are alternately laminated, and having a total layer thickness of 0.5 to 4.0 μm, wherein (a) the cubic boron nitride sintered material has a composition including:10 to 50 vol % of one or more of TiC, TiN, and TiCN;0.1 to 2 vol % of WC;0.3 to 5 vol % of AlN;{'sub': '2', '2 to 10 vol % of TiB;'}{'sub': 2', '3, '1.5 to 10 vol % of AlO; and'}30 to 80 vol % of cBN (cubic boron nitride),(b) when a grain size distribution of cBN grains in the cubic boron nitride sintered material is measured, a peak of the grain size distribution is present within a range of a grain size from 0.50 to 1.00 μm, and a value of a full width at half maximum of the peak satisfies a range from 0.33 to 0.73 μm,{'sub': 1-x', 'x, '(c) the A layer is a Ti and Al complex nitride layer, which has an average single layer thickness of 0.1 to 3.0 μm and has an average composition satisfying 0.42≤x≤0.7 (x represents a content ratio of Al ...

PART COATED WITH A COMPOSITION FOR PROTECTION AGAINST CMAS WITH CONTROLLED CRACKING, AND CORRESPONDING TREATMENT METHOD

The invention relates to a turbomachine part comprising a substrate consisting of a metal material, or a composite material, and also comprising a layer of a coating for protection against the infiltration of CMAS-type compounds, at least partially covering the surface of the substrate, the protective coating layer comprising a plurality of elementary layers including elementary layers of a first assembly of elementary layers inserted between elementary layers of a second assembly of elementary layers, each elementary layer of the first assembly and each elementary layer of the second assembly comprising an anti-CMAS compound, and each contact zone between an elementary layer of the first assembly and an elementary layer of the second assembly forming an interface conducive to the spreading of cracks along said interface. 1. A turbomachine part comprising:a substrate of metallic material, or of composite material,a protective coating layer against the infiltration of compounds of the oxides of calcium, magnesium, aluminum or silicon type, referred to as CMAS type, the coating layer at least partially covering the surface of the substrate,the coating layer comprising a plurality of elementary layers,the part being characterized in that elementary layers of a first set of elementary layers are interposed between elementary layers of a second set of elementary layers, each elementary layer of the first set and each elementary layer of the second set comprising an anti-CMAS compound, each contact zone between an elementary layer of the first set and an elementary layer of the second set forming an interface promoting the propagation of cracks along said interface.2. The turbomachine part as claimed in claim 1 , wherein each elementary layer of the first set has a toughness which differs by at least 0.7 MPa·m1/2 from the toughnesses of all elementary layers of the second set.3. The turbomachine part as claimed in claim 2 , wherein the elementary layers of the first set ...

COATING STRUCTURE, TURBINE PART HAVING SAME, AND METHOD FOR MANUFACTURING COATING STRUCTURE

Provided are a coating structure, a turbine part having the same, and a method for manufacturing the coating structure. The coating structure is provided on a surface of a base portion including a ceramic matrix composite. The coating structure is layered on the surface of the base portion, and includes a bond coat layer formed of a rare-earth silicate and a top coat layer layered on the bond coat layer. The residual stress present in the bond coat layer is compressive residual stress. The oxygen permeability coefficient of the bond coat layer is no greater than 10kg·m·sat a temperature of not lower than 1200° C. and a higher oxygen partial pressure of not less than 0.02 MPa. The bond coat layer may contain carbonitride particles or carbonitride whiskers. 1. A coating structure provided on a surface of a base portion including a ceramic matrix composite comprising:a bond coat layer formed of a rare-earth silicate, the bond coat layer layered on the surface of the base portion; anda top coat layer layered on the bond coat layer,{'sup': −9', '−1', '−1, 'wherein the bond coat layer has a compressive residue stress as a residual stress, and an oxygen permeability coefficient of not greater than 10Kg·m·sat not lower than 1200° C. and a higher oxygen partial pressure of not less than 0.02 MPa.'}2. The coating structure according to claim 1 , wherein the bond coat layer has a crystal ratio of from 90% to 100%.3. The coating structure according to claim 1 , wherein the bond coat layer is layered without another material interposed between the bond coat layer and the surface of the base portion.4. The coating structure according to claim 1 , wherein the residue stress of the bond coat layer is smaller than that of the top coat layer.5. The coating structure according to claim 1 , wherein the bond coat layer has a grain size of from 0.01 μm to 10 μm.6. The coating structure according to claim 1 , wherein in the rare-earth silicate of the bond coat layer claim 1 , a dispersed ...

HEAT SHIELD HAVING AN OUTERMOST YTTRIUM OXIDE COATING, PRODUCTION METHOD AND PRODUCT

The corrosion and erosion resistance of ceramic heat shield elements is improved by the use of yttrium oxide on aluminum oxide as a layer or substrate material is provided. A heat is disclosed having aluminum oxide in the substrate or as a layer on a substrate, wherein yttrium oxide, particularly only yttrium oxide, is present as the outermost layer, particularly directly on the aluminum oxide. 1. A heat shield ,comprisingaluminum oxide in the substrate or as a layer on a substrate,wherein yttrium oxide,is present as the outermost layer.2. The solid ceramic heat shield as claimed in claim 1 ,in which the material of the substrate comprises mullite, with an intermediate aluminum oxide layer and an outermost yttrium oxide layer.3. The solid ceramic heat shield as claimed in claim 1 ,in which the material of the substrate comprises mullite and aluminum oxide,particularly consists thereof.4. The solid ceramic heat shield as claimed in claim 1 ,in which the material of the substrate consists only of aluminum oxide.5. The heat shield as claimed in claim 1 ,which at least comprisesa metallic substrate,a metallic adhesion promoter layer,with an aluminum oxide layer formed by oxidation and/or a separately applied aluminum oxide layer, on which an outermost yttrium oxide layer is applied.6. The heat shield as claimed in claim 5 ,in which a ceramic thermal barrier coating,is present between a metallic adhesion promoter layer and an aluminum oxide layer.7. The heat shield as claimed in claim 1 ,in which the yttrium oxide layer only comprises yttrium oxide,in particular consists thereof,and/or only yttrium oxide is used.8. A method for producing a heat shield claim 1 ,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'in which, starting from a heat shield as claimed in , a heat treatment is carried out at least 1573K,'}for at least one hour.9. A heat shield claim 1 ,{'claim-ref': {'@idref': 'CLM-00008', 'claim 8'}, 'produced as claimed in .'} This application claims priority to ...

ENVIRONMENTAL BARRIER FOR A REFRACTORY SUBSTRATE CONTAINING SILICON

A part including a substrate in which at least a portion adjacent to a surface of the substrate is made of a refractory material containing silicon, is protected by an environmental barrier formed on the surface of the substrate and having at least a self-healing layer containing a rare earth silicate. The self-healing layer is formed: for at least 90 mol %, by a system constituted by 30 mol % to at most 80 mol % of at least one rare earth silicate RESiO, RE being a rare earth, and at least 20 mol % to 70 mol % of manganese oxide MnO; and for at most 10 mol %, by one or more oxides other than MnO, having a eutectic point with SiO2 less than or equal to 1595° C.; the self-healing layer presenting a liquid phase having a self-healing function at least throughout the temperature range 1200° C. to 1400° C., while conserving a majority solid phase. 1. A part comprising a substrate in which at least a portion adjacent to a surface of the substrate is made of a refractory material containing silicon , and an environmental barrier formed on the surface of the substrate and having at least a self-healing layer containing a rare earth silicate , wherein the self-healing layer is formed:{'sub': 2', '2', '7, 'for at least 90 mol %, by a system constituted by 30 mol % to at most 80 mol % of at least one rare earth silicate RESiO, RE being a rare earth, and at least 20 mol % to 70 mol % of manganese oxide MnO; and'}{'sub': '2', 'for at most 10 mol %, by one or more oxides other than MnO, having a eutectic point with SiOless than or equal to 1595° C.;'}the self-healing layer presenting a liquid phase having a self-healing function at least throughout the temperature range 1200° C. to 1400° C., while conserving a majority solid phase.2. A part according to claim 1 , wherein RE is selected from yttrium claim 1 , scandium claim 1 , and the lanthanides.3. A part according to claim 1 , wherein the environmental barrier further comprises an underlayer interposed between the surface of ...

SURFACE-COATED BORON NITRIDE SINTERED BODY TOOL

A surface-coated boron nitride sintered body tool is provided, in which a cutting edge portion includes a compound sintered body and a coating layer. The compound sintered body includes cBN particles. The compound sintered body includes 45-80 vol % of cBN particles. A first particle size distribution curve of the cBN particles has one or more peaks in a range in which a particle size is 0.1-0.7 μm. A second particle size distribution curve of the cBN particles has a first peak having a maximum peak height in a range in which the particle size is 2.0-7.0 μm. An integral value ratio (I/I×100) is 1-20, in the second particle size distribution curve, the integral value Ibeing in the range in which the particle size is 0.1-0.7 μm, and the integral value Ibeing in an entire range. 1. A surface-coated boron nitride sintered body tool , in which at least a cutting edge portion includes a compound sintered body and a coating layer provided on a surface of said compound sintered body ,said compound sintered body including cubic boron nitride particles and binder particles,said compound sintered body including 45 vol % or more and 80 vol % or less of said cubic boron nitride particles,in a case where a particle size distribution of said cubic boron nitride particles in at least one cross section of said compound sintered body is shown by a first particle size distribution curve plotted by a horizontal axis that is divided in each prescribed particle size range and a vertical axis that shows a proportion of the number of particles in each said particle size range, said first particle size distribution curve having one or more peaks in a range in which a particle size is 0.1 μm or more and 0.7 μm or less,in a case where the particle size distribution of said cubic boron nitride particles in at least one cross section of said compound sintered body is shown by a second particle size distribution curve plotted by a horizontal axis that is divided in each prescribed particle size ...

COMPLIANT LAYER FOR CERAMIC COMPONENTS AND METHODS OF FORMING THE SAME

An apparatus includes a ceramic matrix composite (CMC) component and an interface coating on the CMC component, wherein the interface coating includes a layer of at least one of the following compositions: 100 wt % Ir; 90-95 wt % Ir, 5-10 wt % Co, 1-2 wt % Al, 1-2 wt % Si; 40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si; 90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or 60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti. 1. An apparatus , comprising:a ceramic matrix composite (CMC) component; andan interface coating on the CMC component, wherein the interface coating comprises a layer of at least one of the following compositions:100 wt % Ir;90-95 wt % Ir, 5-10 wt % Co, 1-2 wt % Al, 1-2 wt % Si;40-50 wt % Nb, 28-42 wt % Al, 4-15 wt % Cr, 1-2 wt % Si;90-92 wt % Mo, 4-5 wt % Si, 4-5 wt % B; or60-80 wt % V, 20-30 wt % Cr, 2-15 wt % Ti.2. The apparatus of claim 1 , wherein the interface coating further comprises at least one of Ti claim 1 , Ni—Co—Fe claim 1 , or Ni—Mo—Cr.3. The apparatus of claim 1 , wherein the interface coating has a coefficient of thermal expansion (CTE) of about 4×10−6 to about 6×10−6/° F.4. The apparatus of claim 1 , further comprising a bond layer between a surface of the CMC component and the interface coating.5. The apparatus of claim 4 , wherein the bond layer comprises Si.6. The apparatus of claim 4 , wherein the bond layer consists of Si.7. The apparatus of claim 1 , further comprising a corrosion-resistant coating on the interface coating claim 1 , wherein the corrosion-resistant coating comprises an alloy comprising at least one of Ti claim 1 , Al claim 1 , or V claim 1 , an alloy comprising at least one of Ti claim 1 , Al claim 1 , Sn claim 1 , Zr claim 1 , or Mo claim 1 , or an alloy comprising Ni and Cr.8. The apparatus of claim 7 , wherein the corrosion-resistant coating comprises at least one of Ti—Al—V claim 7 , Ti—Al—Sn—Zr—Mo claim 7 , Ni—Cr claim 7 , or Ni—Mo—Cr.9. The apparatus of claim 1 , further comprising a compliance-enhancing coating ...

BOND LAYER FOR SILICON-CONTAINING SUBSTRATES

In some examples, an article may include a substrate and a coating on the substrate. In accordance with some of these examples, the coating may include a bond layer and an overlying layer comprising at least one oxide. In some examples, the bond layer comprises silicon metal and at least one of a transition metal carbide, a transition metal boride, or a transition metal nitride.

Coating Repair for Ceramic Matrix Composite (CMC) Substrates

In a method for repairing a coated article, the article has: a ceramic matrix composite (CMC) substrate; and a coating system having a plurality of layers. A damage site at least partially penetrates at least one of the layers. The method includes: applying a slurry of a repair material to the damage site for repairing a first of the penetrated layers; and after the applying, heating the repair material with a plasma torch.

METHOD FOR MAKING BZ HIGH-TEMPERATURE COLORED GLAZE PORCELAIN PLATE PAINTING

A high-temperature color glaze painting pigment includes a color glaze, white toning glaze and colorless toning glaze, wherein the color glaze consists of 50 wt % to 66 wt % high temperature resistant white glaze mineral and 50 wt % to 34 wt % water, the white toning glaze consists of 70 wt % high temperature resistant white glaze mineral and 30 wt % water, and the colorless toning glaze consists of 30 wt % high temperature resistant colorless glaze mineral and 70 wt % water, wherein the weight ratio of the color glaze to the white toning glaze is 12.5:1 to 50:1, the weight ratio of the color glaze to the colorless toning glaze is 20:1 to 100:1. The high temperature colored glaze painting pigment and a method for making a porcelain plate painting thereof can be not only manually completed by artists with their experiences, but completed by an industrial production way. 1: A high-temperature color glaze painting pigment , comprising a color glaze , a white toning glaze and a colorless toning glaze , wherein said color glaze consists of 50 wt % to 66 wt % of high-temperature resistant color glaze mineral and 50 wt % to 34 wt % of water , said white toning glaze consists of 70 wt % of high-temperature resistant white glaze mineral and 30 wt % of water , and said colorless toning glaze consists of 30 wt % of high-temperature resistant colorless glaze mineral and 70 wt % of water , wherein the weight ratio of said color glaze to said white toning glaze is 12.5:1 to 50:1 , the weight ratio of said color glaze to said colorless toning glaze is 20:1 to 100:1.2: The high-temperature color glaze painting pigment according to claim 1 , wherein said color glaze is selected from the group consisting of a red glaze claim 1 , yellow glaze claim 1 , blue glaze claim 1 , green glaze claim 1 , violet glaze claim 1 , orange glaze or cyan glaze claim 1 , wherein said red glaze consists of 55 wt % of red glaze mineral and 45 wt % of water claim 1 , said yellow glaze consists of 50 wt % ...

METHOD FOR CONSTRUCTING ABRADABLE COATING, AND SHROUD

A method for constructing an abradable coating comprises: a slurry layer formation step S in which a slurry layer is formed on the surface of a base material using a slurry containing ceramic particles and a solvent; a calcination step S in which the slurry layer formed on the surface of the base material is sintered and a sintered layer to be a portion of an abradable coating layer is formed; and a slurry removal step S in which extraneous slurry is removed after the abradable coating layer has been formed on the surface of the base material , a plurality of the sintered layers having been laminated in the abradable coating layer through a plurality of repeated cycles of the slurry layer formation step S and the calcination step S 1. A method for constructing an abradable coating , comprising:a slurry layer formation step of forming a slurry layer on a surface of a base material by using a slurry that contains ceramic particles and a solvent;a calcination step of forming a sintered layer to be a portion of an abradable coating layer by sintering the slurry layer that is formed on the surface of the base material; anda slurry removal step of removing extraneous slurry after forming the abradable coating layer in which a plurality of the sintered layers are laminated on the surface of the base material after repeating the slurry layer formation step and the calcination step a plurality of times.2. The method for constructing an abradable coating according to claim 1 ,wherein the ceramic particles include coarse particles having a large particle size and fine particles having a particle diameter smaller than that of the coarse particles,wherein, when the slurry layer formed to be in contact with the surface of the base material is set as a first slurry layer, and the slurry layer formed to be in contact with the first slurry layer is a second slurry layer, the slurry used in the first slurry layer has a smaller proportion of the coarse particles than that of the ...

SILICON COMPOSITIONS CONTAINING BORON AND METHODS OF FORMING THE SAME

A composition is generally provided that includes a silicon-containing material (e.g., silicon metal and/or a silicide) and a boron-doped refractory compound, such as about 0.001% to about 85% by volume of the boron-doped refractory compound (e.g., about 1% to about 60% by volume). In one embodiment, a bond coating on a surface of a ceramic component is generally provided with the bond coating including such a composition, with the silicon-containing material is silicon metal. 1. A composition , comprising: a silicon-containing material and a boron -doped refractory compound.2. The composition as in claim 1 , wherein the composition comprises about 0.001% to about 85% by volume of the boron-doped refractory compound.3. The composition as in claim 1 , wherein the composition comprises about 1% to about 60% by volume of the boron-doped refractory compound.4. The composition as in claim 1 , wherein the boron-doped refractory compound comprises a compound having the formula:{'br': None, 'sub': 2-x', 'x', '2', '5, 'LnBSiO'}whereLn comprises Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof; andx is 0 to about 1.5. The composition as in claim 1 , wherein the boron-doped refractory compound comprises a compound having the formula:{'br': None, 'sub': 2-x', 'x', '2', '7, 'LnBSiO'}whereLn comprises Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof; andx is 0 to about 1.6. The composition as in claim 1 , wherein the boron-doped refractory compound comprises a compound having the formula:{'br': None, 'sub': 3-x', 'x', '5-y', 'y', '12, 'LnBMBO'}whereLn comprises Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof;x is 0 to about 1.5;M comprises Ga, In, Al, Fe, or a combination thereof;y is 0 to about 2.5; andx+y is greater than 0.7. The composition as in claim 6 , wherein x is 0.01 to about 0.5 claim 6 , and wherein y is about 0.01 to about 0.5.8. The composition as in ...

COMPOSITIONS CONTAINING GALLIUM AND/OR INDIUM AND METHODS OF FORMING THE SAME

A composition is provided that includes a silicon-containing material (e.g., a silicon metal and/or a silicide) and about 0.001% to about 85% of a Ga-containing compound, an In-containing compound, or a mixture thereof. The silicon-based layer can be a bond coating directly on the surface of the substrate. Alternatively or additionally, the silicon-based layer can be an outer layer defining a surface of the substrate, with an environmental barrier coating on the surface of the substrate. A coated component is also provided, as well as a method for coating a ceramic component. Gas turbine engines are also provided that include such a ceramic component. 1. A composition , comprising: a silicon-containing material and about 0.001% to about 85% of a Ga-containing compound , an In-containing compound , or a mixture thereof.2. The composition as in claim 1 , wherein the silicon-containing material is silicon metal.3. The composition as in claim 1 , wherein the silicon-containing material comprises a silicide.4. The composition as in claim 1 , comprising: about 1% to about 25% of the Ga-containing compound claim 1 , and wherein the Ga-containing compound is selected from the group consisting of:GaN;{'sub': 2', '3, 'GaO;'}{'sub': 2-x', 'x', '3, 'GaMOwhere M is In with x being 0 to about 2, Al with x being 0 to about 1.4, B with x being 0 to about 1.4, Fe with x being 0 to about 1.4, or a mixture thereof;'}{'sub': 2', '2', '2', '3, 'ZrO, HfO, or a combination thereof doped with up to about 10 mole % of GaO;'}{'sub': 2-x-y', 'x', 'y', '2', '7, 'LnGaInSiOwhere Ln is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof; x is greater than 0 to about 1; and y is 0 to about 1;'}{'sub': 2-x-y', 'x', 'y', '2', '5, 'LnGaInSiOwhere Ln is Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof; x is greater than 0 to about 1; and y is 0 to about 1;'}{'sub': 4-x', 'x', '2-y', 'y', '9, 'LnDGaInO, where: Ln is La, Ce, Pr, ...

SEMI-TRANSPARENT CERAMIC SHEET DECORATED WITH INK LIGHT-ABSORBANCE AND PREPARATION METHOD THEREOF

Disclosed are a semi-transparent ceramic sheet decorated through ink light-absorbance and a preparation method thereof. The semi-transparent ceramic sheet comprises a semi-transparent green body, an inner inkjet pattern layer infiltrating into the semi-transparent green body from an upper surface of the semi-transparent green body, a decoloration glaze layer located on the upper surface, and a surface pattern layer located on the decoloration glaze layer. The decoloration glaze layer is capable of decoloring the ink of the inner inkjet pattern layer. The semi-transparent ceramic sheet is provided with the decoloration glaze layer so that the inkjet decoration of the inner inkjet pattern layer cannot be displayed on the surface, and the decorative pattern on the surface of the green body is the surface pattern layer and the inner inkjet pattern layer is completely in the inner layer of the green body. 1. A semi-transparent ceramic sheet decorated through ink light-absorbance , comprising:a semi-transparent green body,an inner inkjet pattern layer infiltrating into the semi-transparent green body from an upper surface of the semi-transparent green body,a decoloration glaze layer located on the upper surface of the semi-transparent green body, anda surface pattern layer located on the decoloration glaze layer.2. The semi-transparent ceramic sheet of claim 1 , wherein the infiltration depth of the inner inkjet pattern layer into the semi-transparent green body is 1 to 2 mm.3. The semi-transparent ceramic sheet of claim 1 , wherein the thickness of the decoloration glaze layer is 0.04 to 0.1 mm.4. A method for manufacturing the semi-transparent ceramic sheet of claim 1 , comprising the steps of:preparing a semi-transparent green body;applying a decoloration glaze on the semi-transparent green body;applying a first inkjet infiltrating ink on the decoloration glaze, wherein the decoloration glaze is capable of decoloring the first inkjet infiltrating ink in the ...

METHOD OF FORMING A PROTECTIVE COATING ON A SURFACE OF A CERAMIC SUBSTRATE

A method for forming a protective coating on a surface of a ceramic substrate includes combining a rare-earth oxide, alumina, and silica to form a powder, etching the surface of the ceramic substrate, applying the powder on the etched surface in an amount of from about 0.001 to about 0.1 g/cmto reduce capture of bubbles from off-gassing of the ceramic substrate, heating the powder for a time of from about 5 to about 60 minutes to a temperature at or above the melting point such that the powder melts and forms a molten coating on the surface that has a minimized number of bubbles, and cooling the molten coating to ambient temperature to form the protective coating disposed on and in direct contact with the surface of the ceramic substrate such that the protective coating has a thickness of less than about 1 mil. 1. A method for forming a protective coating on a surface of a ceramic substrate , said method comprising the steps of:providing a powder comprising a rare-earth oxide, alumina, and silica and having a melting point;etching the surface of the ceramic substrate,{'sup': '2', 'applying the powder on the etched surface of the ceramic substrate in an amount of from about 0.001 to about 0.1 g/cmto reduce capture of bubbles from off-gassing of the ceramic substrate;'}heating the powder on the surface of the ceramic substrate for a time of from about 5 to about 60 minutes to a temperature at or above the melting point such that the powder melts and forms a molten coating on the surface of the ceramic substrate that has a minimized number of bubbles from the off-gassing of the ceramic substrate; andcooling the molten coating to ambient temperature to form the protective coating disposed on and in direct contact with the surface of the ceramic substrate,wherein the protective coating has a thickness of less than about 1 mil, andwherein there is no layer disposed between the protective coating and the surface of the ceramic substrate.2. The method of wherein the step of ...

Ion beam sputtering with ion assisted deposition for coatings on chamber components

A method of manufacturing an article includes providing a component for an etch reactor. Ion beam sputtering with ion assisted deposition (IBS-IAD) is then performed to deposit a protective layer on at least one surface of the component, wherein the protective layer is a plasma resistant film having a thickness of less than 1000 μm.

CMAS- RESISTANT THERMAL BARRIER COATINGS

A coating including a CMAS-resistant layer with a rare earth oxide. The CMAS-resistant layer is essentially free of zirconia and hafnia, and may further include at least one of alumina, silica, and combinations thereof. 1. An article comprising:a substrate comprising at least one of a superalloy, a ceramic, or a ceramic matrix composite; anda coating comprising a CMAS-resistant layer over the substrate, wherein the CMAS-resistant layer comprises free rare earth oxide, free silica, and an alkali oxide and is essentially free of zirconia and hafnia, wherein the CMAS-resistant layer is the outermost layer of the coating, and wherein the CMAS-resistant layer comprises at least 10 mol. % free rare earth oxide.2. The article of claim 1 , wherein the CMAS-resistant layer further comprises alumina.3. The article of claim 2 , wherein the CMAS-resistant layer comprises up to 90 mol. % of a combination of the alumina and the free silica claim 2 , between 0.1 mol. % and 50 mol. % of the alkali oxide claim 2 , and a balance of the free rare earth oxide claim 2 , with a total of 100 mol. %.4. The article of claim 2 , wherein the CMAS-resistant layer comprises 10 mol. % to 90 mol. % of the free rare earth oxide claim 2 , 10 mol. % to 90 mol. % of a combination of the alumina and the free silica claim 2 , and between 0.1 mol. % and 50 mol. % of the alkali oxide claim 2 , with a total of 100 mol. %.5. The article of claim 2 , wherein the CMAS-resistant layer comprises 20 mol. % to 80 mol. % of the free rare earth oxide claim 2 , between 0.1 mol. % and 50 mol. % of the alkali oxide claim 2 , and 20 mol. % to 80 mol. % of a combination of the alumina and the free silica claim 2 , with a total of 100 mol. %.6. The article of claim 2 , wherein the CMAS-resistant layer comprises between about 10 mol. % and about 90 mol. % of the free rare earth oxide claim 2 , between about 10 mol. % and about 90 mol. % of a combination of the alumina and the free silica claim 2 , and between about 0. 1 ...

Cmas-resistant abradable coatings

In some examples, an article includes a ceramic or a ceramic or ceramic matrix composite (CMC) substrate; and an abradable coating on the CMC substrate. The abradable coating includes a plurality of first rare earth (RE) silicate layers in an alternating arrangement with a plurality of second RE silicate layers, wherein the first RE silicate layers include a rare earth monosilicate and the second RE silicate layers include a rare earth disilicate, and wherein the first RE silicate layers include a greater concentration of the rare earth monosilicate than the second RE silicate layers.

TAPE CASTING COATING FOR CERAMIC MATRIX COMPOSITE

The disclosure describes braze tape coatings and technique to form articles with differing physical properties in different layers or regions of the article. An example method includes forming a braze tape defining at least one layer that includes a first segment and a second segment. A portion of the second segment in the plane is adjacent to a portion of the first segment in a plane of the layer. The method also includes positioning the braze tape on a surface of a substrate, the plane of the layer of the braze tape being parallel to the surface of the substrate. The method also includes heating the braze tape to melt a constituent of at least one of the first coating material and the second coating material to form a densified coating on the surface of the substrate. 1. A method comprising: a first segment comprising a first coating material; and', 'a second segment comprising a second coating material, wherein a portion of the second segment in the plane is adjacent to a portion of the first segment in the plane;, 'forming a tape defining at least one layer extending in a plane, the at least one layer comprisingpositioning the tape on a surface of a substrate, wherein the plane of the layer of the tape is parallel to the surface of the substrate; andheating the tape to sinter a constituent of at least one of the first coating material and the second coating material to form a densified coating on the surface of the substrate.2. The method of claim 1 , wherein forming the tape comprises:applying, by a tape casting system, a first slurry containing the first coating material to a carrier film;applying, by the tape casting system, a second slurry containing the second coating material to the carrier film adjacent to the first slurry;drying the first slurry; anddrying the second slurry to form the tape.3. The method of claim 1 , wherein forming the tape comprises:partially sintering at least one of the first coating material or the second coating material; ...

SOLVENT BASED SLURRY COMPOSITIONS FOR MAKING ENVIRONMENTAL BARRIER COATINGS AND ENVIRONMENTAL BARRIER COATINGS COMPRISING THE SAME

Organic solvent based slurry compositions for making an environmental barrier coating including from about 6.8 wt % to about 96.1 wt % solvent; from about 3.9 wt % to about 93.2 wt % primary material; and from about 0.01 wt % to about 20 wt % slurry sintering aid. 1. An environmental barrier coating comprising: from about 6.8 wt % to about 96.1 wt % organic solvent;', 'from about 3.9 wt % to about 93.2 wt % primary transition material;, 'at least one transition layer made from a transition layer slurry comprising [{'sub': '2', 'from about 0.01 wt % to about 20.6 wt % SiOslurry sintering aid; and'}, from about 6.8 wt % to about 96.1 wt % organic solvent; and', 'from about 3.9 wt % to about 93.2 wt % primary outer material; and, 'an outer layer made from an outer layer slurry comprising, 'optionally, any one or more of, from about 6.8 wt % to about 96.1 wt % organic solvent; and', 'from about 3.9 wt % to about 93.2 wt % primary compliant material., 'a compliant layer made from a compliant layer slurry comprising], 'from about 0.01 wt % to about 59.3 wt % Lnb rare earth metal slurry sintering aid;'}2. The environmental barrier coating of claim 1 , wherein any one or more of the transition layer slurry claim 1 , the outer layer slurry claim 1 , or the compliant layer slurry comprises:from about 0 wt % to about 8.9 wt % dispersant;from about 0 wt % to about 15.4 wt % plasticizer;from about 0 wt % to about 1 wt % surfactant; andfrom about 0 wt % to about 15.4 wt % thickener.3. The barrier coating of wherein the primary transition material is a rare earth disilicate claim 1 , or a doped rare earth disilicate; the primary outer material is a rare earth monosilicate or a doped rare earth monosilicate; and the primary compliant material is BSAS claim 1 , or rare earth doped BSAS; and wherein the doped rare earth disilicate of the transition layer and the doped rare earth monosilicate of the outer layer comprise a doping composition selected from the group consisting of iron ...

Article for high temperature service

An article comprises a substrate comprising a ceramic matrix composite; a first layer disposed over the substrate, the first layer comprising an interconnected first silicide, and a second phase; and a second layer disposed over the first layer, the second layer comprising a second silicide in mass transfer communication with the first silicide.

Abradable Compositions and Methods for CMC Shrouds

Coating systems on a surface of a CMC component, such as a CMC shroud, are provided. The coating system can include an environmental barrier coating on the surface of the CMC component and an abradable coating on the environmental barrier coating and defining an external surface opposite of the environmental barrier coating. The abradable coating includes a compound having the formula: Ln 2 ABO 8 , where Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof; A comprises Si, Ti, Ge, or a combination thereof; and B comprises Mo, W, or a combination thereof. In one embodiment, the abradable coating has a first coefficient of thermal expansion at an interface with the environmental barrier coating that changes to a second coefficient of thermal expansion at its external surface. Methods are also provided for applying an abradable coating onto a CMC component.

WAVELENGTH CONVERSION ELEMENT, ILLUMINATION DEVICE, PROJECTOR, AND METHOD OF MANUFACTURING WAVELENGTH CONVERSION ELEMENT

A wavelength conversion element according to the invention includes: a base material; a wavelength conversion layer supported by one surface of the base material and containing a wavelength conversion material and an inorganic binder; a light transmitting layer provided in a side of the wavelength conversion layer opposite to the base material and made of an inorganic material; and an antireflection film provided in a side of the light transmitting layer opposite to the wavelength conversion layer. 1. A wavelength conversion element comprising:a base material;a wavelength conversion layer supported by one surface of the base material and containing a wavelength conversion material and an inorganic binder;a light transmitting layer provided in a side of the wavelength conversion layer opposite to the base material and made of an inorganic material; andan antireflection film provided in a side of the light transmitting layer opposite to the wavelength conversion layer.2. An illumination device comprising:a light source that emits first light in a first wavelength range; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the wavelength conversion element according to , on which the first light is incident and which emits second light in a second wavelength range different from the first wavelength range.'}3. The illumination device according to claim 2 , whereinthe antireflection film has an antireflection action on both the first wavelength range and the second wavelength range.4. A projector comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'the illumination device according to ;'}a light modulator that modulates light emitted from the illumination device, in response to image information; anda projection optical system that projects the light modulated by the light modulator.5. A method of manufacturing a wavelength conversion element claim 2 , comprising:applying a first mixture containing a phosphor powder and a first glass powder to one surface of a ...

Environmental barrier coating-based thermal barrier coatings for ceramic matrix composites

A thermal barrier coating composition for a ceramic matrix composite is provided. The thermal barrier coating comprises a porous layer and a doped rare earth disilicate layer. The porous layer is located over the doped rare earth disilicate layer. The porous layer includes a fugitive material.

SILKY, FINE-GRAINED MATTE CERAMIC TILE AND PREPARATION METHOD THEREOF

The invention involves a silky, fine-grained matte ceramic tile and its preparation method. A blank material for the ceramic tile consists of the following components: nepheline powder: 10%-15%; high-carbon mud: 10%-15%; low-carbon mud: 15%-22%; medium-high-carbon mud: 10%-15%; recycled waste blank: 5%-10%; feldspar powder: 5%-10%; albite powder for paving: 12%-20%; waste porcelain powder: 5%-10%; desulfurized waste: 0%-7%; waste from edging and polishing: 15%-26%; liquid gel remover: 0.3%-1.0%; liquid reinforcing agent: 0.2%-0.8%. Its preparation method comprises the following steps: preparing raw materials for a blank body and ball milling→spray drying→aging→pressing and molding of the blank body→drying→polishing the blank body→spraying water→applying a glaze→applying a decorative pattern→firing. 1. A silky , fine-grained matte ceramic tile , wherein a blank material for the ceramic tile consists of the following components in weight percentages:nepheline powder: 10%-15%;high-carbon mud: 10%-15%;low-carbon mud: 15%-22%;medium-high-carbon mud: 10%-15%;recycled waste blank: 5%-10%;feldspar powder: 5%-10%;albite powder for paving: 12%-20%;desulfurized waste: 0%-7%;waste from edging and polishing: 15%-26%;waste porcelain powder: 5%-10%;liquid gel remover: 0.3%-1.0%;liquid reinforcing agent: 0.2%-0.8%.2. The silky claim 1 , fine-grained matte ceramic tile according to claim 1 , wherein the waste from edging and polishing is one or more selected from the group consisting of SiO claim 1 , AlO claim 1 , CaO claim 1 , KO claim 1 , NaO claim 1 , MgO claim 1 , MgCl claim 1 , and SiC;the waste from edging and polishing has a water content of 32% to 36%.3. The silky claim 1 , fine-grained matte ceramic tile according to claim 1 , wherein the liquid gel remover is one or more selected from the group consisting of methacrylic acid claim 1 , sodium methallylsulfonate claim 1 , sodium persulfate claim 1 , hydroquinone claim 1 , polyimide claim 1 , sodium hydroxide claim 1 , sodium ...

Dense multi-phase bond coat

A method includes depositing a porous silicon coat on a substrate to form a bulk phase of a bond coat and introducing a reactive gas into pores of the porous silicon coat. The reactive gas reacts with silicon adjacent the pores of the porous silicon coat to form a ceramic phase of the bond coat comprising a silicon-based ceramic and reduce porosity of the porous silicon coat. A temperature of the reactive gas is greater than about 1000° C.

DISPERSANTS FOR COLOURATION OF CERAMIC TILES USING INK JET INKS

The invention provides dispersed inorganic mixed metal oxide pigment compositions in a non-aqueous media utilizing a dispersant having polyisobutylene succinic anhydride structure to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to colour ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the coloured article is also described. 1. A pigment dispersion composition comprising:a) 20-79 wt. % of a continuous phase liquid non-polar organic media having less than 7 wt. % water based on the weight of the dispersion;b) 20-60 wt. % of a mixed metal oxide ceramic pigment in particulate form that develops its full color intensity and hue after firing at elevated temperatures; andc) 1-20 wt. % dispersant of the comprising the reaction product of polyisobutylene with maleic acid and/or anhydride under reaction conditions for form a chemically coupled molecule.2. The composition according to claim 1 , wherein said reaction product of polyisobutylene with maleic acid and/or anhydride has a number average molecular weight from 500 and 2500 g/mole and an acid number from 40 to 200 mgKOH/g of dispersant.3. The composition according to claims 1 , wherein said non-polar organic continuous phase has a molecular weight from about 200 to about 20 claims 1 ,000 g/mole and is comprised of mostly carbon and hydrogen with up to 10 wt. % of combined heteroatoms selected from nitrogen and oxygen based on the weight of said organic continuous phase.4. The composition as claimed in any of claim 3 , wherein the particulate solid is at least one ceramic pigment of mixed metal oxides which contain a combination of two or more elements in cationic form selected from Al claim 3 , Mg claim ...

Gas turbine components and methods of assembling the same

A gas turbine component includes a substrate and a corrosion resistant layer coupled to the substrate. The corrosion resistant layer includes zirconium silicate and is configured to protect the substrate from exposure to a vanadium corrodent.

LOW-COST AND ENVIRONMENT-FRIENDLY DECORATIVE BUILDING MATERIAL AND MANUFACTURING METHOD THEREOF

The present invention provides a low-cost and environment-friendly decorative building material and its manufacturing method to obtain a stone-like surface without actually using natural stones. Said low-cost and environment-friendly decorative building material comprises a substrate; multiple decorative colloids of various shapes and sizes distributed on and adhered to the top surface of the substrate; solidified base layers distributed respectively in correspondence with the decorative colloids, and located on the top surface of the decorative colloids to shape the decorative colloids after primary sintering; and protective layers of various colors and patterns, distributed respectively in correspondence with the decorative colloids, configured on the surface of the solidified base layer through spray printing, to shape and color the decorative colloids after secondary sintering; said solidified base layers and said protective layers both contain glaze powder; and said protective layers further contain glue that can fix the aforementioned glaze powder on the surface of the solidified base layers. 1100. A low-cost and environment-friendly decorative building material , said low-cost and environment-friendly decorative building material () comprising:{'b': '1', 'a substrate ();'}{'b': 2', '1, 'a plurality of decorative colloids () of various shapes and sizes distributed on and adhered to a top surface of the substrate ();'}{'b': 3', '2', '2', '2, 'solidified base layers () distributed respectively in correspondence with the decorative colloids (), and disposed on a top surface of the decorative colloids () to shape the decorative colloids () after primary sintering; and'}{'b': 4', '2', '3', '2, 'protective layers () of various colors and patterns, distributed respectively in correspondence with the decorative colloids (), configured on a surface of the solidified base layer () through spray printing, to shape and color the decorative colloids () after secondary ...

CERAMIC TILE

Ceramic tile having a ceramic base layer and a cover glaze layer including a printed pattern, where the surface of the ceramic tile has a relief having structural features corresponding to the printed pattern. The relief being basically formed as a plurality of excavations present in the generally plane upper surface of the ceramic tile and the structural features have a depth such that they are completely situated above the ceramic base layer. 115.-. (canceled)16. A ceramic tile comprising:a ceramic base layer, anda cover glaze layer comprising a printed pattern,wherein a generally planar upper surface of the ceramic tile comprises a relief having structural features corresponding to said printed pattern and wherein said relief is basically formed as a plurality of excavations present in the generally planar upper surface of the ceramic tile and wherein said structural features have a depth such that they are completely situated above said ceramic base layer.17. The ceramic tile according to claim 16 , wherein printed pattern extends substantially over the entire surface of the ceramic tile.18. The ceramic tile according to claim 16 , wherein said printed pattern represents a wood or stone pattern claim 16 , preferably representing only one one-piece wooden plank or stone tile over the entire surface of the ceramic tile.19. The ceramic tile according to claim 16 , wherein said printed pattern is a wood pattern and said structural features are lines following the course of the grain lines of the wood pattern or a plurality of successive dashes having a configuration following the grain lines of the wood pattern.20. The ceramic tile according to claim 16 , wherein the tile is rectangular and oblong claim 16 , and the printed pattern is a wood printed pattern with the grain lines running substantially in the longitudinal direction of the tile.21. The ceramic tile according to claim 16 , wherein said relief is formed on the surface of said cover glaze layer.22. The ...

SURFACE-COATED BORON NITRIDE SINTERED BODY TOOL

A surface-coated boron nitride sintered body tool is provided, in which at least a cutting edge portion includes a cubic boron nitride sintered body and a coating film formed on a surface of the cubic boron nitride sintered body. The coating film includes an A layer and a B layer. The A layer is formed of columnar crystals each having a particle size of 10 nm or more and 400 nm or less. The B layer is formed of columnar crystals each having a particle size of 5 nm or more and 70 nm or less. The B layer is formed by alternately stacking two or more compound layers having different compositions. The compound layers each have a thickness of 0.5 nm or more and 300 nm or less. 1. A surface-coated boron nitride sintered body tool , in which at least a cutting edge portion includes a cubic boron nitride sintered body and a coating film formed on a surface of the cubic boron nitride sintered body ,said cubic boron nitride sintered body comprising 30 vol % or more and 80 vol % or less of cubic boron nitride particles, and further comprising a binder phase including at least one compound selected from the group consisting of nitride, carbide, boride, oxide, and solid solutions thereof in group 4 elements, group 5 elements and group 6 elements in a periodic table, an aluminum compound, and inevitable impurities,said coating film including an A layer and a B layer,{'sub': 'za1', 'said A layer being formed of columnar crystals and including MLa(M represents one or more of group 4 elements, group 5 elements and group 6 elements in the periodic table, Al and Si; La represents one or more of B, C, N, and O; and za1 is 0.85 or more and 1.0 or less),'}said B layer being formed of columnar crystals and formed by alternately stacking one or more of each of two or more compound layers having different compositions,said compound layers each having a thickness of 0.5 nm or more and 300 nm or less,{'sub': 1-xb1-yb1', 'xb1', 'yb1', '1-zb1', 'zb1, 'one of said compound layers being a B1 ...

Modified atmosphere melt infiltration

A ceramic matrix composite component for use in a gas turbine engine and method for making the same are described herein. The component includes a body and an outer region. The body includes a silicon containing ceramic composite. The outer region is on an outer surface of the body.

ENVIRONMENTAL BARRIER COATING

A coating used in a vapor-oxidative atmosphere has a first layer including SIALON and a second layer covering the first layer and being exposed to the atmosphere, the second layer including mullite, wherein the first layer and the second layer get in contact with each other. 1. A coating used in a vapor-oxidative atmosphere and covering a ceramic matrix composite material , comprising:a first layer including SiAlON; anda second layer covering the first layer and being exposed to the atmosphere, the second layer including mullite,wherein the first layer and the second layer get in contact with each other.2. The coating of claim 1 , wherein the SIALON is a beta-prime form.3. The coating of claim 1 , wherein the second layer is 5-300 micrometers in thickness.4. The coating of claim 1 , wherein the first layer is 5-300 micrometers in thickness and is bonded with and covers a base body. This application is a Continuation Application of PCT International Application No. PCT/JP2016/055437 (filed Feb. 24, 2016), which is in turn based upon and claims the benefit of priority from Japanese Patent Application No. 2015-040594 (filed Mar. 2, 2015), the entire contents of which are incorporated herein by reference.Technical FieldThe disclosure herein relates to a coating covering an engine or such of an aircraft, and in particular to a coating protecting the engine or such from high-temperature and oxidative environments.Description of the Related ArtTo improve various properties including energy efficiency of engines of aircrafts is a persistently remaining technical problem. While one of key factors for improving the energy efficiency is, as being well-known, weight reduction, another exemplified measure right along therewith could be elevation of the operating temperature. Operation of an engine in higher temperatures improves thermal efficiency thereof, thereby creating an expectation of improvement of energy efficiency.While nickel-based superalloys have been used as heat- ...

THERMAL AND ENVIRONMENTAL BARRIER COATING COMPOSITIONS AND METHODS OF DEPOSITION

A coated substrate is provided that comprises: a substrate; and a barrier coating comprising a compound having the formula: LnABO, where Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof; A comprises Si, Ti, Ge, Sn, Ce, Hf, Zr, or a combination thereof; and B comprises Mo, W, or a combination thereof. In one embodiment, B comprises Mo. 1. A coated substrate , comprising:a substrate; and {'br': None, 'i': 'n', 'sub': 2', '8, 'LABO'}, 'a barrier coating comprising a compound having the formulawhere Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof;A comprises Si, Ti, Ge, Sn, Ce, Hf, Zr, or a combination thereof; andB comprises Mo, W, or a combination thereof.2. The coated substrate as in claim 1 , wherein Ln is selected from the group consisting of scandium (Sc) claim 1 , yttrium (Y) claim 1 , lanthanum (La) claim 1 , cerium (Ce) claim 1 , praseodymium (Pr) claim 1 , neodymium (Nd) claim 1 , promethium (Pm) claim 1 , samarium (Sm) claim 1 , europium (Eu) claim 1 , gadolinium (Gd) claim 1 , terbium (Tb) claim 1 , dysprosium (Dy) claim 1 , holmium (Ho) claim 1 , erbium (Er) claim 1 , thulium (Tm) claim 1 , ytterbium (Yb) claim 1 , lutetium (Lu) claim 1 , and mixtures thereof.3. The coated substrate as in claim 1 , wherein Ln comprises yttrium.4. The coated substrate as in claim 1 , wherein B comprises Mo.5. The coated substrate as in claim 4 , wherein the compound has the formula:{'br': None, 'i': 'n', 'sub': 2', 'x', '1-x', '8, 'LAMoWO,'}where 0≤x≤about 0.5.6. The coated substrate as in claim 1 , wherein B comprises W or a combination of Mo and W.7. The coated substrate as in claim 6 , wherein the compound has the formula:{'br': None, 'i': 'n', 'sub': 2', 'x ...

METHOD TO PROCESS A CERAMIC MATRIX COMPOSITE (CMC) WITH A PROTECTIVE CERAMIC COATING

A method of producing a ceramic matrix composite including a protective ceramic coating thereon comprises applying a surface slurry onto an outer surface of an impregnated fiber preform. The surface slurry includes particulate ceramic solids dispersed in a flowable preceramic polymer comprising silicon, and the impregnated fiber preform comprises a framework of ceramic fibers loaded with particulate matter. The flowable preceramic polymer is cured, thereby forming on the outer surface a composite layer comprising a cured preceramic polymer with the particulate ceramic solids dispersed therein. The cured preceramic polymer is then pyrolyzed to form a porous ceramic layer comprising silicon carbide, and the impregnated fiber preform and the porous ceramic layer are infiltrated with a molten material comprising silicon. After infiltration, the molten material is cooled to form a ceramic matrix composite body with a protective ceramic coating thereon. 1. A method of producing a ceramic matrix composite having a protective ceramic coating , the method comprising:applying a first surface slurry onto an outer surface of an impregnated fiber preform comprising a framework of ceramic fibers loaded with particulate matter, the first surface slurry comprising particulate ceramic solids dispersed in a solvent;drying the first surface slurry to form a dried porous layer comprising the particulate ceramic solids;infiltrating a flowable preceramic polymer comprising silicon into the dried porous layer;curing the flowable preceramic polymer to form a composite layer on the outer surface, the composite layer comprising a cured preceramic polymer with the particulate ceramic solids dispersed therein;pyrolyzing the cured preceramic polymer to form a porous ceramic layer comprising silicon carbide on the outer surface;infiltrating the impregnated fiber preform and the porous ceramic layer on the outer surface thereof with a molten material comprising silicon; andafter infiltration with ...

Polychromatic Zirconia Bodies and Methods of Making the Same

A ceramic body is provided that is suitable for use in dental applications to provide a natural aesthetic appearance. A colorized ceramic body is formed that has at least one color region and a color gradient region. A ceramic body is formed having at least two color regions and a color gradient that forms a transition region between two color regions. A method for making the colorized ceramic body includes unidirectional infiltration of a coloring composition into the ceramic body. 1. A method of coloring a ceramic body for use in dental applications comprising: i. a first end surface adjacent a first porous region,', 'ii. a second end surface adjacent a second porous region, opposite the first end surface, and', 'iii. a side surface that extends between the first end and second end surfaces;, 'a. obtaining a porous ceramic body comprising'}b. infiltrating a diluting liquid through the first end surface to occupy a first porous region adjacent the first end;c. preventing the diluting liquid from passing through the second end surface and the side surface;d. infiltrating a liquid coloring composition comprising a liquid component and a coloring agent through the second end surface to occupy the second porous region adjacent the second end surface,e. preventing the liquid coloring composition and the diluting liquid from passing through the first end surface and side surface;f. contacting a portion of the liquid coloring composition in the second porous region with a portion of the diluting the diluting liquid in the first porous region; andg. forming a color gradient region, wherein the coloring agent has a concentration that decreases from the second porous region towards the first porous region.2. The method of claim 1 , wherein the liquid coloring composition contacts the diluting liquid at an interface and the coloring agent is diluted by the diluting liquid adjacent the interface.3. The method of claim 1 , wherein during infiltrating the diluting liquid claim 1 ...

Ceramic coatings with apatite carbonate that allow a tactile thermal sensation similar to wood and good resistance against wear, chemical attack and staining

In one aspect, the present invention comprises providing an additive or aggregate to be applied directly to one or more of the components of a ceramic coating and which is constituted by carbonate apatites particles which are maintained as aggregates within a matrix of silicoaluminates at firing temperatures of the ceramic coatings, where the main function of these aggregates is to provide the ceramic coating properties selected from the group comprising: low effusivity, wear resistance, resistance to chemical attack and resistance to staining. In other aspects, the present invention comprises providing a ceramic coating incorporating said additive and a method for providing a ceramic coating with properties selected from the group comprising: low effusivity, wear resistance, resistance to chemical attack and resistance to staining. 1. A ceramic coating comprising a ceramic support body and the following layers: a layer called enamel comprising a glass layer that defines the functional and decorative properties of the ceramic coating; and a layer called engobe which allows a good union between the enamel and the ceramic support body , wherein the ceramic coating is characterized by at least one of its layers containing from 0.50% to 30% by weight of an additive comprising carbonate apatites which have in its structure carbonates (CO) that partially replace groups PO— in a 0.1% to 8.0% by weight; wherein carbonate apatites are selected from one or more materials of the group comprising: natural carbonate apatites , synthetic carbonate apatites , or mixtures thereof and wherein the carbonate apatites are in the form of particles comprising diameters between 100 nanometers and 50 microns.2. A ceramic coating according to wherein the ceramic coating can be classified according to the ISO 13006 standard used in the industry claim 1 , in the case of dry pressed products claim 1 , in the following groups:Group BIa having a water absorption capacity of between 0% and 0.5%; ...

BOND LAYER FOR CERAMIC OR CERAMIC MATRIX COMPOSITE

An article having a substrate that includes a ceramic or a ceramic matrix composite, a bond layer on the substrate that includes silicon metal and a boria stabilizing agent, and at least one additional layer on the bond layer. 1. An article comprising:a substrate comprising a ceramic or a ceramic matrix composite;a bond layer on the substrate, wherein the bond layer comprises silicon metal and a boria stabilizing agent, wherein the boria stabilizing agent comprises at least one of a zinc silicate, tantalum silicate, niobium silicate, molybdenum silicate, and tungsten silicate; andat least one additional layer on the bond layer.2. The article of claim 1 , wherein the at least one additional layer comprises an environmental barrier coating (EBC).3. The article of claim 2 , wherein the EBC comprises at least one of mullite claim 2 , barium strontium aluminosilicate (BSAS) claim 2 , barium aluminosilicate (BAS) claim 2 , strontium aluminosilicate (SAS) claim 2 , a rare earth oxide claim 2 , a rare earth silicate claim 2 , an aluminosilicate claim 2 , or an alkaline earth aluminosilicate.4. The article of claim 2 , wherein an outer surface of the EBC is abradable and comprises a porous microstructure having a void volume fraction of greater than about 10 percent by volume (vol. %).5. The article of claim 2 , wherein the at least one additional layer further comprises a porous abradable layer on the EBC having a void volume fraction of greater than about 15 percent by volume (vol. %).6. The article of claim 1 , wherein the substrate comprises boron claim 1 , boria claim 1 , or a boron-containing species that oxidizes to form boria.7. The article of claim 1 , wherein the coefficient of thermal expansion (CTE) of the bond layer is between about 2 parts per million per degree Celsius (ppm/° C.) and about 6 ppm/° C. at room temperature at room temperature.8. The article of claim 1 , wherein the bond coat further comprises at least one of zirconium silicate or hafnium silicate ...

Production method of ceramic honeycomb structure, and ceramic honeycomb structure

A method for producing a ceramic honeycomb structure comprising a ceramic honeycomb body having large numbers of longitudinal cells partitioned by porous cell walls having porosity of 50% or more, and a peripheral wall formed on a peripheral surface of the ceramic honeycomb body, comprising the steps of extruding moldable ceramic material to form a honeycomb-structured ceramic green body; machining a peripheral portion of the green body or a sintered body obtained from the green body to remove part of cell walls in the peripheral portion to obtain a ceramic honeycomb body having longitudinal grooves on a peripheral surface; applying colloidal metal oxide to a peripheral surface of the ceramic honeycomb body and drying it, and then applying a coating material comprising ceramic aggregate having an average particle size of 1 μm or more to form the peripheral wall.

FORMING A SURFACE LAYER OF A CERAMIC MATRIX COMPOSITE ARTICLE

The disclosure describes techniques for forming a surface layer of an article including a CMC using a cast. In some examples, the surface layer includes three-dimensional surface features, which may increase adhesion between the CMC and a coating on the CMC. In some examples, the surface layer may include excess material, with or without three-dimensional surface features, which is on the CMC. The excess material may be machined to remove some of the excess material and facilitate conforming the article to dimensional tolerances, e.g., for fitting the article to another component. The excess material may reduce a likelihood that the CMC (e.g., reinforcement material in the CMC) is damaged by the machining. 1. A method comprising:depositing a slurry on a surface of an impregnated porous preform using a cast to form a surface layer including a plurality of three-dimensional surface features, wherein the cast defines the negative of the three-dimensional surface features, and wherein the impregnated porous preform comprises a reinforcement material and at least one matrix precursor;drying the slurry to form a greenbody preform; andinfiltrating the greenbody preform with a molten infiltrant to form a composite article including the three-dimensional surface features.2. The method of claim 1 , wherein:the slurry comprises a first slurry; and impregnating a porous preform with a second slurry; and', 'drying the second slurry to form the impregnated porous preform., 'the method further comprises, prior to depositing the first slurry on the surface of the impregnated porous preform3. The method of claim 2 , wherein a composition of the first slurry is different than a composition of the second slurry.4. The method of any claim 1 , wherein depositing the slurry on the surface of the impregnated porous preform using the cast to form the surface layer including the plurality of three dimensional features comprises stamping the slurry on the surface of the impregnated porous ...

Thermal and/or environmental barrier coating system

An article may include a substrate and a coating system on the substrate. The coating system may include a thermal and/or environmental barrier coating (T/EBC) layer, wherein the T/EBC layer includes a silicate phase including more than one metal cation.

EBC with Mullite Bondcoat Having a Non-Oxide Silicon Ceramic

A coated component, along with methods of making and using the same, is provided. The coated component includes a ceramic matrix composite (CMC) substrate comprising silicon carbide and having a surface; a mullite/NOSC bondcoat on the surface of the substrate; and an environmental barrier coating on the mullite/NOSC bondcoat. The mullite/NOSC bondcoat comprises a non-oxide silicon ceramic (NOSC) phase contained within a mullite phase, with the mullite/NOSC bondcoat comprising 60% to 95% by volume of the mullite phase, such as 65% to 93% by volume of the mullite phase.

SURFACE LAYER ON A CERAMIC MATRIX COMPOSITE

The disclosure describes a method for forming a surface layer of a ceramic matrix composite (CMC) article. The technique includes depositing a slurry on a surface of an infiltrated CMC. The slurry includes a carrier material, a binder, a plasticizer, and solid particles. The solid particles include a plurality of fine ceramic particles defining a fine particle average size less than about 5 micrometers. The method further includes drying the slurry to form an article having an outer surface layer that includes the solid particles on the infiltrated CMC. The method further includes machining at least a portion of the outer surface layer of the article. The method further includes infiltrating the article with a molten infiltrant to form a composite article. 1. A method comprising:depositing a slurry on a surface of an infiltrated ceramic matrix composite (CMC), wherein the slurry comprises a carrier material, a binder, a plasticizer, and solid particles, wherein the solid particles comprise a plurality of fine ceramic particles defining a fine particle average size less than about 5 micrometers;drying the slurry to form an article having an outer surface layer comprising the solid particles on the infiltrated CMC;machining at least a portion of the outer surface layer of the article; andinfiltrating the article with a molten infiltrant to form a composite article.2. The method of claim 1 , wherein the slurry is a second slurry and the particles are second solid particles claim 1 , the method further comprising claim 1 , prior to depositing the second slurry on the surface of the infiltrated CMC:infiltrating a ceramic matrix composite (CMC) substrate with a first slurry to at least partially fill at least some inner spaces of the CMC substrate, wherein the first slurry comprises first solid particles comprising a first ceramic material; anddrying the first slurry to form the infiltrated CMC, wherein the CMC comprises the first solid particles.3. The method of claim 1 ...