Verfahren zur Herstellung einer Hochtemperaturschutzbeschichtung

Verfahren zur Herstellung einer Hochtemperaturschutzbeschichtung für metallische Bauteile bei welchem ein Schlicker aus einem MCrAlY-Pulver, bei dem M mindestens ein Metall ist, und aus einem Cr-Pulver hergestellt wird, wobei der Schlicker auf dem zu beschichtenden Bauteil aufgetragen wird und das mit dem Schlicker versehene Bauteil alitiert wird.

ALUMINIDE-SILICIDE COATINGS

Verfahren zur Herstellung von diffusionsverchromten eisernen oder stählernen Gegenständen.

Procédé de préparation d'un corps supraconducteur

Process for treating surfaces

A process for treating surfaces is described, in which the material to be treated, for example iron, an iron alloy or the like, is immersed in a molten bath which has been prepared by addition of 5 to 50 % by weight of a metal-cementing agent consisting of one or more substances from the group comprising the elements of group Va, which contain an element of group Va, elements of the group VIa and substances which contain an element of group VIa, to a salt bath agent, consisting of a neutral salt which, mixed therewith, contains 5 to 30 mol% of a borate. In this way, a carbide of the element of group Va or of the element of group VIa or a composite carbide of these elements is formed on the surfaces of the material. 1 to 10 % by weight of an auxiliary, consisting of one or more substances from the group comprising oxysalts of elements from groups IVa, Va and VIa, and/or 1 to 10 % by weight of metals or alloys thereof from the group comprising metals of the group IVa and alloys thereof can ...

MATERIAL MIXTURE AS WELL AS YOUR USE FOR THE PRODUCTION OF A CARBIDE LAYER ON THE SURFACE OF A FERROUS ALLOY.

Process for the manufacture of objects out of iron or steel, chrome by diffusion

PROCESS Of OBTAINING BY DIFFUSION OF COMPOSITE COATINGS ON METAL PARTS AND DEVICE TO IMPLEMENT THIS PROCESS

COMPONENT ANTI-OXIDATION COATING FOR SUCH A COMPONENT AND CORRESPONDING PRODUCTION METHOD

The invention relates to a component with a substrate region as anti-oxidation coating, in particular, a component for a gas turbine, with a substrate surface and a substrate composition for the component, with a substrate region in the region of the substrate surface of the component, produced by diffusion therein of at least one metal. According to the invention, the component has a substrate composition based on nickel, with an aluminium component of more than 4.5 wt. %, whereby at least one metal of the platinum group is exclusively diffused in the substrate surface of the component to form the substrate region.

ALUMINUM-CHROMIUM DIFFUSION COATING

A process includes applying a slurry to a surface of a metallic article to produce a slurry film on the surface. The slurry is composed of a liquid carrier, chromium and aluminum, and an agent that is reactive with the chromium and aluminum to form intermediary compounds. The article and slurry film are then thermally treated at an activation temperature at which the agent reacts with the chromium and aluminum to form the intermediary compounds. The intermediary compounds deposit the chromium and aluminum on the surface. The thermal treating also diffuses the chromium and aluminum into a sub-surface region of the article such that the sub-surface region becomes enriched with chromium and aluminum.

Способ химико-термической обработки твердосплавных пластин

Изобретение относится к технологиям повышения износостойкости режущего инструмента из твердого сплава за счет изменения состава и структуры их поверхностных слоев и может быть использовано для увеличения стойкости инструмента к механическому и коррозионно-механическому износам. Способ включает проведение предварительной высокотемпературной цементации изделий, последующее диффузионное насыщение их поверхности в легкоплавком свинцово-висмутовом расплаве, содержащем в растворенном состоянии титан, и последующее диффузионное насыщение в свинцово-висмутовом расплаве, содержащем в растворенном состоянии никель и медь в равных долях и в количестве 15-20% от общей массы расплава в диапазоне температур от 1000 до 1500°С в течение 120-300 мин. Технический результат: повышение износостойкости и эксплуатационного ресурса изделий из твердых сплавов ВК, ТК, ТТК, а также производительности технологического процесса. 1 табл., 4 пр.

Способ формирования никель-алюминиевого коррозионностойкого покрытия на сталях

Изобретение относится к способу формирования никель-алюминиевого коррозионностойкого покрытия на сталях. Осуществляют диффузионное насыщение изделия при температуре 900-1070°С в течение 2-5 ч в расплаве, содержащем компоненты при следующем соотношении, мас.%: свинец 89-97,5, литий 0,5-1, никель 1-5, алюминий 1-5. Обеспечивается повышение коррозионной стойкости стальных изделий при агрессивном воздействии на них сероводородсодержащей рабочей среды. 2 табл., 4 пр.

СПОСОБ ПОВЕРХНОСТНОГО ЛЕГИРОВАНИЯ ДЕТАЛЕЙ ИЗ СТАЛИ 40Х

FIELD: machine building; metallurgy. SUBSTANCE: invention relates to metallurgy and machine building, namely to combined methods of metal hardening, and can be used in production of parts operating under conditions of wear and alternating loads. Method for surface alloying of parts from steel 40X includes depositing on surface of parts a composition containing alloying elements, preliminary surface alloying and thermodiffusion saturation of surface of parts with alloying elements by heating at temperature 650–750 °C with holding for 3–4 hours and with subsequent cooling. Nanodispersed suspension containing sol with copper nanoparticles and alloying elements introduced thereto is used as the part applied on the surface of the parts of the composition; after that, the nanodispersed suspension of the part is dried. Preliminary surface doping is carried out using micro-arc heating, and subsequent thermodiffusion saturation is carried out in a reactor in a glow-discharge plasma with holding in a medium of dissociated ammonia and air at low pressure. In particular cases of invention implementation introduction of alloying elements into sol containing copper nanoparticles is performed by means of spraying of chromel wire using micro-arc discharge. Suspension on part surface is applied by dipping. EFFECT: increased depth of doped layer and increased strength characteristics of parts due to increased rate of diffusion of alloying elements with simultaneous simplification of process of metallization of surface of parts. 3 cl, 1 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 716 177 C1 (51) МПК C23C 28/00 (2006.01) C23C 10/26 (2006.01) C23C 8/38 (2006.01) B82Y 30/00 (2011.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 28/00 (2020.01); C23C 10/26 (2020.01); C23C 8/38 (2020.01); B82Y 30/00 (2020.01) (21)(22) Заявка: 2019136644, 14.11.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 06.03.2020 ...

Способ повышения износостойкости и коррозионной стойкости изделий из аустенитных сталей

Изобретение относится к технологиям, обеспечивающим повышение стойкости изделий, изготовленных из аустенитных сталей, к механическим воздействиям и к воздействиям агрессивных рабочих сред за счет изменения состава и структуры их поверхностных слоев. Способ формирования износостойкого покрытия на поверхности изделий из аустенитных сталей включает две стадии. На первой стадии проводят диффузионное насыщение поверхности изделия в расплаве, содержащем свинец, литий, хром и ванадий, при следующем соотношении компонентов, мас. %: свинец 93,4-98,0, литий 0,5-0,8, хром 1-5, ванадий 0,5-0,8, которое осуществляют при температуре 650-1250 °С. На второй стадии проводят азотирование при температурах 450-650 °С в течение 2-48 часов. Технический результат - повышение износостойкости и эксплуатационного ресурса изделий, изготовленных из аустенитных сталей, в условиях воздействия на них высоких контактных напряжений и агрессивного воздействия рабочей среды. 1 табл., 4 пр.

Способ получения диффузионных многокомпонентных защитных покрытий

Metallic component used for a steam power plant comprises a protective layer containing aluminum and further elements and/or an aluminum alloy

Metallic component comprises a protective layer containing aluminum and further elements and/or an aluminum alloy. A part of the aluminum, the further elements and/or the aluminum alloy is diffused into the material of the component. The protective layer has an aluminum-containing oxide layer. An Independent claim is also included for a process for the production of the metallic component comprising mixing particles of the aluminum, the further elements and/or the aluminum alloy with a liquid at room temperature, applying the mixture to the surfaces of the component and thermally post-treating the component. Preferred Features: The component is made from steel having a chromium content of up to 13 wt.%. The oxide layer is at least 2 mu m thick.

Process for chemical-thermal treatment of steel workpieces

The process for chemical-thermal treatment of steel workpieces while producing a coating consists in diffusion saturation of the workpiece material with a substance, namely an intermetallic compound from a liquid-metal solution on the basis of a low-melting metal such as sodium or lithium, at a temperature from 720 to 820 DEG C over a time sufficient to produce a coating of a predefined thickness.

PROCEDURE FOR THE DIFFUSION COATING OF A SUBSTRATE ON IRON BASIS

SLURRY COMPOSITIONS FOR DIFFUSION COATINGS

Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a Cr-Al alloy containing about 50 wt% to about 80 wt% Cr in the alloy, LiF in an amount greater than or equal to 0.3 wt% of the Cr-Al alloy, an organic binder, and a solvent.

COATING COMPOSITION FOR ANTI-GALLING OF STAINLESS STEEL AND THERMAL DIFFUSION COATING METHOD WITH THE COMPOSITION

Method of manufacturing monolithic catalysts

The present invention is directed to a method of coating a substrate, such as a honeycomb having a plurality of parallel channels defined by the honeycomb walls. The honeycomb has different zones along the length of the channels. The zones are defined by their coating (or lack of coating) and extend for a length of the channel in which there is the same coating and architecture. Soluble components in coating compositions are fixed in their respective zones by forcing a heated gas stream through the channels.

SLURRY CHROMIZING COMPOSITIONS

Slurry coating composition for selectively enriching surface regions of a metal-based substrate, for example, the under-platform regions of a turbine blade, with chromium. The slurry coating composition contains metallic chromium, optionally metallic aluminum in a lesser amount by weight than chromium, and optionally other constituents. The composition further includes colloidal silica, and may also include one or more additional constituents, though in any event the composition is substantially free of hexavalent chromium and sources thereof. The coating composition can be used in a process that entails applying the coating composition to a surface region to form a slurry coating, and then heating the coating to remove any volatile components of the coating composition and thereafter cause diffusion of chromium from the coating into the surface region to form a chromium-rich diffusion coating. 1. A slurry coating composition for enriching a surface region of a metal-based substrate with chromium , the slurry coating composition comprising a metallic powder , colloidal silica , and optionally one or more additional constituents though substantially free of hexavalent chromium and sources thereof , the metallic powder having a bulk composition comprising metallic chromium and optionally metallic aluminum in a lesser amount by weight than the metallic chromium.2. The slurry coating composition according to claim 1 , wherein the metallic chromium constitutes at least 15 weight percent of the bulk composition of the metallic powder.3. The slurry coating composition according to claim 1 , wherein the bulk composition of the metallic powder is predominantly the metallic chromium.4. The slurry coating composition according to claim 1 , wherein the metallic powder consists of metallic chromium and incidental impurities.5. The slurry coating composition according to claim 1 , wherein the metallic powder further comprises the metallic aluminum.6. The slurry coating ...

СОСТАВ ДЛЯ МОДИФИЦИРОВАНИЯ МЕТАЛЛОВ И ВОССТАНОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ ПОВЕРХНОСТЕЙ

FIELD: powder metallurgy, more particularly preparation of cement alloys and restoration of worn metallic surfaces. SUBSTANCE: composition comprises finely dispersed mixture of serpophite, catalyst, kaolinite and crystallizer, ratios of components being as follows, wt %: caolinite, 10-40; crystallizer 5-10; catalyst, 5-10; serpophite, 4- 70. Caolinite is amesite, crystallizer is pyrolusite and catalyst is metasilicate. Invention makes it possible to prepare cement materials having high strength, homogeneity of structure and desired parameters in volume and on surface of ferrous and nonferrous metals and alloys. EFFECT: improved properties of the composition. 6 cl, 8 ex зЗ0ос6б9с ПЧ рэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (11) ВО 2169 208 5) МК С23С 26/00, В2ЗР 6/00 (13) СЛ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2000122650/02, 31.08.2000 (24) Дата начала действия патента: 31.08.2000 (43) Дата публикации заявки: 20.06.2001 (46) Дата публикации: 20.06.2001 (56) Ссылки: 2135638 СЛ, 27.08.1999. КЦ 2149141 СЛ, 27.05.2000. КУ 2062821 СЛ, 21.06.1996. ОЕ 3829039 АД, 09.03.1989. (98) Адрес для переписки: 195426, Санкт-Петербург, пр-т Косыгина, 9, корп.2, кв.410, Т.Д. Петровой (71) Заявитель: ЗАО "НПО Руспромремонт" (72) Изобретатель: Никитин И.В., Пустовой И.Ф., Червоненко Ю.А. (73) Патентообладатель: ЗАО "НПО Руспромремонт" (54) СОСТАВ ДЛЯ МОДИФИЦИРОВАНИЯ МЕТАЛЛОВ И ВОССТАНОВЛЕНИЯ МЕТАЛЛИЧЕСКИХ ПОВЕРХНОСТЕЙ (57) Реферат: Изобретение относится к машиностроению и порошковой металлургии и может быть использовано для создания металлокерамических сплавов и восстановления изношенных металлических поверхностей путем создания на них металлокерамического слоя, обладающего высокими триботехническими характеристиками, ИЗНОСОСТОЙКОСТЬЮ и коррозионной стойкостью. Состав для модифицирования металлов и восстановления металлических поверхностей содержит мелкодисперсную смесь серпофита, катализатора, каолинита и кристаллизатора при ...

СОСТАВ ДЛЯ ФОРМИРОВАНИЯ НОВООБРАЗОВАННОГО СЛОЯ НА ТРУЩИХСЯ МЕТАЛЛИЧЕСКИХ ПОВЕРХНОСТЯХ

FIELD: mechanical engineering; forming layers on worn metal surfaces of machines and mechanisms. SUBSTANCE: proposed method includes forming of layer possessing self-restoration effect in the course of operation, high tribotechnical characteristics, enhanced wear resistance and corrosion resistance in compound containing finely-dispersed base in form of mixture and catalyst; used as finely-dispersed base are natural nickel-iron-magnesian hydrosilicates and used as catalyst is mineral of olivine group: forsterite or fatalite at the following ratio of components, mass-%: nickel-iron-magnesian hydrosilicates, 90-95; catalyst, 5-10; size of grains of base and catalyst are similar, they range from 1 mcm to 100 mcm. EFFECT: enhanced efficiency. 2 dwg, 2 tbl, 3 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2 266 979 (13) C1 C 23 C 26/00, B 23 P 6/00 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004131366/02, 28.10.2004 (72) Àâòîð(û): ×åðâîíåíêî Þ.À. (RU) (24) Äàòà íà÷àëà äåéñòâè ïàòåíòà: 28.10.2004 (73) Ïàòåíòîîáëàäàòåëü(ëè): ×åðâîíåíêî Þðèé Àëåêñàíäðîâè÷ (RU) (45) Îïóáëèêîâàíî: 27.12.2005 Áþë. ¹ 36 R U (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2169208 C1, 20.06.2001. RU 2199609 C1, 27.02.2003. RU 2201999 Ñ2, 10.04.2003. US 6647622 Â2, 18.11.2003. US 5174833 A, 29.12.1992. RU 2062821 C1, 27.06.1996. 2 2 6 6 9 7 9 âèäå ñìåñè è êàòàëèçàòîð, ñîãëàñíî èçîáðåòåíèþ â êà÷åñòâå ìåëêîäèñïåðñíîé îñíîâû èñïîëüçîâàíû ïðèðîäíûå íèêåëü-æåëåçî-ìàãíåçèàëüíûå ãèäðîñèëèêàòû, à â êà÷åñòâå êàòàëèçàòîðà ìèíåðàë èç ãðóïïû îëèâèíîâ - ôîðñòåðèò èëè ôà ëèò, ïðè ñëåäóþùåì ñîîòíîøåíèè êîìïîíåíòîâ, ìàñ.%: íèêåëü-æåëåçî-ìàãíåçèàëüíûå ãèäðîñèëèêàòû - 90-95, êàòàëèçàòîð - 5-10, ïðè ýòîì ðàçìåð çåðåí îñíîâû è êàòàëèçàòîðà ñîîòâåòñòâóþò äðóã äðóãó è ñîñòàâë åò îò 1 ìêì äî 100 ìêì. 2 èë., 2 òàáë. R U (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê ìàøèíîñòðîåíèþ, â ÷àñòíîñòè ê âåùåñòâàì, ïðåäíàçíà÷åííûì äë ...

Устройство для диффузионной металлизации в среде легкоплавких жидкометаллических растворов

FIELD: technological processes. SUBSTANCE: invention relates to a device for obtaining a diffusion coating on the surface of articles in a low-melting liquid metal solution, which can be used in various industries of machine building. Said device comprises a chamber divided into three zones. In the lower zone of the chamber there is a low-melting liquid metal solution. Above it, in the middle zone of the chamber, there is a layer consisting of a salt melt forming a zone for cleaning articles from traces of low-melting liquid metal solution and having a temperature specified for thermal treatment of the coated articles. Upper zone of the chamber forming the preheating zone of the coated articles is made hollow. From above the chamber is closed with a cover, in which a movable rod is fixed, which is made with possibility of vertical movement in the cover. Chamber is made of artificial graphite, and on its outer surface in areas of zone separation there are grooves filled with a heat-insulating substance. Each zone of the chamber is equipped with its own inductor for high-frequency induction heating. Inductor of the upper zone is made with possibility of water circulation in it and providing cooling of the upper zone. In the upper zone of the chamber there is a nozzle with a valve for supply of inert gas to it and a nozzle for removal of inert gas, which is made with the possibility of evacuation of the chamber. EFFECT: improved quality and stability of properties of diffusion coatings and thermal treatment of material of article, reduced consumption of electric power and reduced duration of technological process. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) (19) RU (11) (13) 2 767 108 C1 (51) МПК C23C 10/22 (2006.01) C23C 10/26 (2006.01) C23C 2/08 (2006.01) C23C 2/10 (2006.01) C23C 2/14 (2006.01) C23C 26/02 (2006.01) B05C 3/02 (2006.01) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 10/22 (2021.08); C23C 10/26 (2021.08); ...

A metallic article having a protective coating and a method therefor

A metallic article has an aluminide silicide protective coating 12 comprising a silicon, chromium and platinum group metal modified aluminide coating. The silicon, chromium and platinum group metal modified aluminide coating comprises at least one ductile layer 16 comprising chromium, silicon and platinum group metal phase and at least one layer 14 comprising nickel, aluminium and platinum group metal phase. This composite structure is produced by applying a slurry of aluminium, silicon and palladium in a suitable binder. The chromium in the aluminide silicide coating either diffuses from the superalloy or is provided by chromium in the binder for the slurry, eg a chromate.

Improvements relating to Superconductors

... 1190817 Coating with metals COMPAGNIE FRANCAISE THOMSON HOUSTONHOTCHKISS BRANDT 1 June 1967 [1 June 1966] 25433/67 Headings H1A A5 and A4D A Type II super-conductor, which may be an inter-metallic compound, is made by depositing one of two constituents, which together form the type II super-conductor, on a support and covering it with the other constituent by hot-dipping. The Type II super-conductor may then be formed by a heat treatment which homogenizes the constituents. At no time is the super-conductor or its constituents allowed to come under tension. A protecting sheath around the Type II superconductor and its support may be applied before homogenizing and a layer of metal be deposited over the sheath. Ribbons of stainless steel, nickel, nickel alloy, of molybdenum or of members of the platinum family or braids of ceramic fibre may be used as supports, or a metal billec may be placed in a sheath or tube and rolled with it to produce a composite strip with a core of the supporting ...

PROCEDURE FOR THE DIFFUSION COATING OF A SUBSTRATE ON IRON BASIS

VERFAHREN ZUR DIFFUSIONSBESCHICHTUNG EINES SUBSTRATS AUF EISENBASIS

METHODS FOR METAL COATING

The present disclosure provides methods for forming a metal layer adjacent to a substrate, comprising providing a substrate comprising carbon at a concentration of at least about 0.001 wt% and one or more of silicon, manganese, titanium, vanadium, aluminum and nitrogen, and depositing a first layer comprising a metal adjacent to the substrate. Next, the first layer and the substrate may be subjected to annealing under conditions that are sufficient to generate a second layer from the first layer adjacent to the substrate. The second layer may comprise the carbon and the metal as a metal carbide.

DIFFUSING TITANIUM AND NITRIDE INTO COATED MATERIALS

PROCESS AND COMPOSITION TO FORM a LAYER CARBUREE ON the SURFACE Of an OBJECT OUT OF IRON ALLOY

Procédé et composition pour former une couche carburée sur la surface d'un objet en alliage de fer. Le bain de traitement comprend, outre de l'acide borique ou du borate, un oxyde d'un élément du groupe Va ou un oxyde de chrome et un ou plusieurs métaux ou alliages d'éléments du groupe Va ou du chrome, pourvu que les éléments sous forme métallique soient autres que ceux sous forme d'oxyde. Industries automobiles. A method and composition for forming a carburized layer on the surface of an iron alloy article. The treatment bath comprises, in addition to boric acid or borate, an oxide of an element of group Va or an oxide of chromium and one or more metals or alloys of elements of group Va or chromium, provided that the elements in metallic form are other than those in oxide form. Automotive industries.

PROCEDE DE TRAITEMENT THERMOCHIMIQUE DE PIECES EN ACIERS ET ALLIAGES ET PIECES TRAITEES CONFORMEMENT AUDIT PROCEDE

L'INVENTION CONCERNE LA METALLURGIE. LE PROCEDE FAISANT L'OBJET DE L'INVENTION EST DU TYPE DANS LEQUEL LA SURFACE DES PIECES EST SATUREE DE SILICIUM PAR DIFFUSION, AVEC FORMATION D'UNE COUCHE SILICIUREE, PUIS ELLE EST SATUREE DE MATIERES ANTIFRICTIONS, ET EST CARACTERISE EN CE QUE LA SATURATION DE LA SURFACE DES PIECES PAR LES MATIERES ANTIFRICTIONS S'EFFECTUE A PARTIR DU MILIEU DE TREMPE, AU COURS DE LA TREMPE ISOTHERME DES PIECES. L'INVENTION S'APPLIQUE NOTAMMENT AU TRAITEMENT DES SURFACES FROTTANTES DE PIECES EN ACIER ET EN FONTE, TRAVAILLANT DANS LES COUPLES A FROTTEMENT DU TYPE ARBRE-APPUI LISSE OU A GLISSEMENT DANS LES CONDITIONS D'UN GRAISSAGE LIMITE, DE FORTES CHARGES, DE FAIBLE VITESSE DE GLISSEMENT ET DE TEMPERATURES ACCRUES.

PROTECTION OF the SURFACE OF an ARTICLE WITH NICKEL BASE WITH a LAYER OF RESISTANT ALUMINUM ALLOY To the CORROSION

Oxide-forming protective coatings for niobium-based materials

Coatings suitable for use as protective oxide-forming coatings on Nb-based substrates exposed to high temperatures and oxidative environments. The coatings contain chromium and/or molybdenum, preferably contains silicon, and optionally contains niobium, titanium, hafnium, iron, rhenium, tantalum, and/or tungsten, which in combination form multiple intermetallic phases, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. Depending on the particular coating composition, the intermetallic phases may be: a silicon-modified Cr2Nb Laves phase and optionally a chromium solid solution phase, a CrNbSi intermetallic phase, and/or an M3Si intermetallic phase where M is niobium, titanium, and/or chromium; or M5Si3, MSi2 and/or M3Si2 where M is molybdenum, niobium, titanium, chromium, hafnium, iron, rhenium, tantalum, and/or tungsten.

Oxidation-resistant coating and formation method thereof, thermal barrier coating, heat-resistant member, and gas turbine

The present invention provides an oxidation-resistant coating having superior oxidation resistance and superior ductility and toughness for long-term use, and a method for forming the oxidation-resistant coating. An MCrAlY layer primarily containing an MCrAlY alloy (in which M indicates at least one element of Co and Ni) is formed on a substrate formed of a heat-resistant metal by thermal spraying or EB=PVD, and subsequently, aluminum is diffused into a part of the MCrAlY layer in the thickness direction thereof from a side opposite to the substrate.

Способ получения износостойкого покрытия на поверхности стальных деталей

FIELD: technological processes. SUBSTANCE: invention relates to technologies that provide increased resistance of steel parts to mechanical effects and to effects of aggressive working media due to a change in a composition and structure of their surface layers, and can be used for increasing operational life of articles, increasing their loading, in particular for increasing durability of injection molds used for injection casting. Method comprises diffusion saturation of the steel part surface in the melt, containing lead, bismuth, lithium, nickel, chromium and cobalt, at a temperature of 650 to 1,250 °C. Used melt containing components at the following ratio, wt%: lead – 31.2 or 47.5 or from 32 to 47, bismuth – from 40 to 55, lithium – from 0.5 to 0.8, nickel – from 1 to 5, chromium – from 2 to 10, cobalt – from 1 to 3. EFFECT: invention provides increased wear resistance and service life of steel articles under exposure of high contact stresses and aggressive effects of a working medium. 1 cl, 1 tbl, 3 ex

Verfahren zur Herstellung einer Bremsscheibe sowie Bremsscheibe

Die Erfindung betrifft ein Verfahren zur Herstellung einer Bremsscheibe (1) für ein Fahrzeug, bei welchem auf einem Basiskörper (2) der Bremsscheibe (1) zumindest bereichsweise eine Reibschicht (11) angeordnet wird. Vorgeschlagen wird, dass das Verfahren zumindest die Schritte umfasst: Zumindest bereichsweises Vorbearbeiten des im Rohling vorliegenden Basiskörpers (2); Erwärmen des Basiskörpers (2) auf eine Diffusionstemperatur Eintauchen des erwärmten Basiskörpers (2) in eine Schmelze aufweisend unedle Metalllegierungen, so dass eine Funktionsschicht (10) zwischen dem Basiskörper (2) und der noch aufzubringenden Reibschicht (11) gebildet wird, wobei das unedle Metall besagter Schmelze in das Substratmaterial des Basiskörpers (2) eindiffundiert, und Zumindest bereichsweise aufbringen der Reibschicht (11) mittels thermischer Spritzverfahren, wobei zumindest teilweise Partikel (12) aus der Reibschicht (11) herausragen und/oder dass die Reibschicht (11) eingelagerte Partikel (12) aufweist, ...

CONNECTION TO THE MODIFICATION OF METAL AS WELL AS RESTORATION OF A METAL SURFACE

PROCEDE DE TRAITEMENT THERMOCHIMIQUE DE PIECES EN ACIER ET PIECES EN ACIER AINSI TRAITEES

L'INVENTION CONCERNE LES PROCEDES DE TRAITEMENT THERMOCHIMIQUE DES METAUX. LE PROCEDE FAISANT L'OBJET DE L'INVENTION, CONSISTANT A FORMER SUR LES PIECES A TRAITER UN REVETEMENT RESULTANT DE LA CEMENTATION DE LEUR MATERIAU PAR UN AGENT PROVENANT D'UNE SOLUTION METALLIQUE LIQUIDE A BASE DE METAL A BAS POINT DE FUSION, EST CARACTERISE EN CE QUE LA CEMENTATION EST REALISEE A UNE TEMPERATURE DE 720 A 820C PENDANT UN TEMPS SUFFISANT POUR OBTENIR L'EPAISSEUR PRESCRITE DU REVETEMENT, AU SEIN D'UNE SOLUTION DANS LAQUELLE LE METAL A BAS POINT DE FUSION EST LE SODIUM OU LE LITHIUM, ET LE CEMENT, UN COMPOSE INTERMETALLIQUE. L'INVENTION PEUT ETRE UTILISEE NOTAMMENT POUR L'OBTENTION DE REVETEMENTS IMITANT PAR LEURS PROPRIETES PHYSICOCHIMIQUES LES METAUX PRECIEUX (OR, PLATINE).

PROCEDE D'OBTENTION PAR DIFFUSION DE REVETEMENTS COMPOSITES SUR DES PIECES METALLIQUES ET DISPOSITIF POUR METTRE EN OEUVRE CE PROCEDE

LE PROCEDE COMPORTE LA DISSOLUTION SEPAREE, DANS UNE MATIERE VEHICULE EN FUSION 3 D'ELEMENTS D'ADDITION 8, 9, A UNE TEMPERATURE T EGALE A 0,5 A 0,8FOIS LA TEMPERATURE DE LEUR FUSION ET LA SATURATION EN ELEMENTS D'ADDITION 8, 9 DE LA SURFACE DE LA PIECE METALLIQUE 5 A UNE TEMPERATURE T EGALE A 0,3 A 0,5FOIS LA TEMPERATURE DE FUSION DE LA MATIERE DE LADITE PIECE 5, LA DIFFERENCE T-T ETANT EGALE OU SUPERIEURE A 50C. A CETTE FIN, IL EST PREVU DANS LE DISPOSITIF DES CHAMBRES CHAUFFABLES ET COMMUNIQUANT ENTRE ELLES: UNE CHAMBRE CENTRALE 2 RECEVANT DE LA MATIERE VEHICULE EN FUSION 3 ET LA PIECE METALLIQUE 5 A REVETIR ET DEUX CHAMBRES PERIPHERIQUES 6, 7 RECEVANT DE LA MATIERE VEHICULE EN FUSION 3 ET DES ELEMENTS 8, 9 D'ADDITION INDIVIDUELS.

COMPOUND FOR METAL MODIFICATION AND METAL SURFACE RESTORATION

The invention refers to mechanical engineering and metallurgy and can be predominantly used for the development of cermet alloys and surfaces based on ferrous and nonferrous metals that possessing high tribotechnical characteristics, wear resistance and corrosion stability, and also for restoration of worn-out metal surfaces by forming a cermet layer upon them. The compound represents a mixture with the dispersion of 0.1-10.0 μm that contains serpophite in the amount of 40-70 % of the compound mass; kaolinite, for example amesite, in the amount of 10-40 % of the compound mass; crystallizer, for example pyrolusite, in the amount of 5-10 % of the compound mass; and catalyst, for example metasilicate, in the amount of 5-10 % of the compound mass. The invention provides obtaining cermet layers that process high strength, homogeneity of structure and necessary thickness, the cermet having specified predictable parameters, both in the bulk and at the surface of ferrous and non-ferrous metals ...

COMPOUND FOR METAL MODIFICATION AND METAL SURFACE RESTORATION

The invention refers to mechanical engineering and metallurgy and can be predominantly used for the development of cermet alloys and surfaces based on ferrous and nonferrous metals that possessing high tribotechnical characteristics, wear resistance and corrosion stability, and also for restoration of worn-out metal surfaces by forming a cermet layer upon them. The compound represents a mixture with the dispersion of 0.1-10.0 μm that contains serpophite in the amount of 40-70 % of the compound mass; kaolinite, for example amesite, in the amount of 10-40 % of the compound mass; crystallizer, for example pyrolusite, in the amount of 5-10 % of the compound mass; and catalyst, for example metasilicate, in the amount of 5-10 % of the compound mass. The invention provides obtaining cermet layers that process high strength, homogeneity of structure and necessary thickness, the cermet having specified predictable parameters, both in the bulk and at the surface of ferrous and non-ferrous metals ...

Treating composition, forming a mixed-carbide layer of Va-Group elements and of chromium on a ferrous-alloy surface and resulting product

A method and treating material are presented for forming a mixed-carbide layer of at least one Va-Group element and of chromium on the surface of a carbon-containing ferrous-alloy material. A molten treating bath is prepared by introducing one or more Va-Group elements in oxide form and chromium in metal or alloy form or by introducing one or more Va-Group elements in metal or alloy form and at least one chromium oxide into a molten bath composed of boric acid, of at least one borate or of a mixture thereof. An article of carbon-containing ferrous alloy is immersed and maintained in the molten treating bath until a mixed-carbide layer is formed on its surface. The mixed-carbide layer formed on the surface of the article is very smooth, wear resistant and high-temperature-oxidation resistant.

Methods and systems for coating a steel substrate

The present disclosure provides systems and methods for depositing a metal layer adjacent to or on a substrate. Substrates may comprise, for example, one or more of iron, chromium, nickel, silicon, vanadium, titanium, boron, tungsten, aluminum, molybdenum, cobalt, manganese, zirconium, and niobium, oxides thereof, nitrides thereof, sulfides thereof, or any combination thereof. A substrate may be a steel substrate. A metal layer may be deposited via, for example, roll coating, vapor deposition, slurry deposition, or electrochemical deposition.

Products produced by a process for diffusing titanium and nitride into a material having generally compact, granular microstructure

A method for diffusing titanium and nitride into a base material having a generally compact, granular microstructure (e.g., carbide). The method generally includes the steps of providing a base material having a generally compact, granular microstructure; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 430° C. to about 670° C.; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, the base material may further be treated with conventional surface treatments or coatings.

Component anti-oxidation coating for such a component and corresponding production method

The invention relates to a component with a substrate region as an oxidation protective or anti-oxidation layer, especially a component of a gas turbine, with a substrate surface and a substrate composition of the component, and with a substrate region formed in the region of the substrate surface of the component by in-diffusion of at least one metal. According to the invention, the component comprises a substrate composition on a nickel basis with an aluminum proportion of greater than 4.5 weight %, whereby exclusively at least one metal of the platinum group is diffused into the substrate surface of the component for the formation of the substrate region.

Slip and process for producing an oxidation- and corrosion-resistant diffusion layer

The present invention relates to a process for producing a diffusion layer for protecting temperature-stressed components, in particular of turbomachines, against oxidation and corrosion. The process comprises application of at least one slip to a component surface on which the diffusion layer is to be produced, and drying and/or hardening of the at least one slip by a heat treatment at a first temperature and diffusion heat treatment at a second temperature. The slip comprises Al-containing powder, Si-containing powder and a binder and also a Cr-containing powder which does not comprise any hexavalent chromium. In addition, the invention provides a corresponding slip.

SURFACE TREATING METHOD

PURPOSE: To form a composite carbide layer with excellent anti-wear property on the surface of a material to be treated by a method wherein elements of the Group IVa and the Group Va of the Periodic Table are added to a salt bath and, after said salt bath is melted by heating, the material to be treated is immersed therein. CONSTITUTION: A base salt bath may be a molten salt bath capable of solublizing elements of the Group IVa and the Group Va and being stable at about 850W1,100°C but a neutral salt or a mixed salt of the neutral salt and about 5W30mol% of a borate is available. When the neutral salt is used as the salt bath, an element of the Group IVa is added in an amount of 2W10wt% as a pure form and an element of the Group Va in a amount of 25W40% as a pure form. When a mixed liquid of the neutral salt and the borate or the borate alone is used as the salt bath, an element of the Group IVa is added in an amount of 1W4wt% as a pure form and an element of the Group Va in an amount of ...

КОМПОНЕНТ ИЗ СУПЕРСПЛАВА И СПОСОБ ЕГО УСОВЕРШЕНСТВОВАНИЯ

1. Способ усовершенствования компонента из суперсплава (1) с помощью, по меньшей мере, одной добавки, выбранной из группы Hf, La, Y, в котором, по меньшей мере, одну добавку вводят в поверхностный слой (7) компонента.2. Способ по п.1, в котором, по меньшей мере, две добавки, выбранные из группы Hf, La, Y, вводят в поверхностный слой (7) компонента (1).3. Способ по п.2, в котором добавки вводят в поверхностный слой (7) компонента (1) одну за другой.4. Способ по п.2, в котором, по меньшей мере, две добавки вводят в поверхностный слой (7) компонента (1) одновременно.5. Способ по любому из пп.1-4, в котором, по меньшей мере, одну добавку вводят в поверхностный слой (7), имеющий глубину 0,5 мм или менее.6. Способ по любому из пп.1-4, в котором Hf используют в качестве добавки, и Hf вводят в поверхностный слой (7) в количестве до 5% от массы материала, составляющего поверхностный слой (7).7. Способ по п.5, в котором Hf используют в качестве добавки, и Hf вводят в поверхностный слой (7) в количестве до 5% от массы материала, составляющего поверхностный слой (7).8. Способ по любому из пп.1-4, в котором La и/или Y используют в качестве добавки, и La и/или Y вводят в поверхностный слой (7) в количестве до 0,2% от массы материала, составляющего поверхностный слой (7).9. Способ по любому из пп.1-4, в котором введение, по меньшей мере, одной добавки в поверхностный слой (7) осуществляют вплавлением, по меньшей мере, одной добавки в поверхность.10. Способ по п.9, в котором вплавление, по меньшей мере, одной добавки в поверхность осуществляют местным нагреванием поверхности.11. Способ по любому из пп.1-4, в котором введение, по меньшей мере, одной добавки в поверхностный слой (7) осуществляют диффузией, по меньшей мер� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C23C 10/30 (13) 2011 145 280 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011145280/02, 18.02.2010 (71) Заявитель(и): СИМЕНС АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) Приоритет( ...

Способ получения многокомпонентныхдиффузиОННыХ пОКРыТий

Verfahren zur Herstellung einer Bremsscheibe sowie Bremsscheibe

Verfahren zur Herstellung einer Bremsscheibe (1) für ein Fahrzeug, bei welchem auf einem Basiskörper (2) der Bremsscheibe (1) zumindest bereichsweise eine Reibschicht (11) angeordnet wird, umfassend zumindest die folgenden Schritte: Zumindest bereichsweises Vorbearbeiten des im Rohling vorliegenden Basiskörpers (2); Erwärmen des Basiskörpers (2) auf eine Diffusionstemperatur Eintauchen des erwärmten Basiskörpers (2) in eine Schmelze aufweisend unedle Metalllegierungen, so dass eine Funktionsschicht (10) zwischen dem Basiskörper (2) und der noch aufzubringenden Reibschicht (11) gebildet wird, wobei das unedle Metall besagter Schmelze in das Substratmaterial des Basiskörpers (2) eindiffundiert, und zumindest bereichsweise Aufbringen der Reibschicht (11) mittels thermischer Spritzverfahren, wobei zumindest teilweise Partikel (12) aus der Reibschicht (11) herausragen und/oder dass die Reibschicht (11) eingelagerte Partikel (12) aufweist, welche vom Durchmesser größer sind als die Dicke der Reibschicht (11), so dass die Partikel (12) aus der Reibschicht herausragen. Method for producing a brake disk (1) for a vehicle, in which a friction layer (11) is arranged at least in regions on a base body (2) of the brake disk (1), comprising at least the following steps: At least partially pre-processing of the present in the blank base body (2); Heating the base body (2) to a diffusion temperature immersing the heated base body (2) in a melt comprising base metal alloys, so that a functional layer (10) is formed between the base body (2) and the friction layer (11) still to be applied, wherein the base Metal of said melt is diffused into the substrate material of the base body (2), and at least partially applying the friction layer (11) by means of thermal spraying, wherein at least partially particles (12) protrude from the friction layer (11) and / or that the friction layer (11) has embedded particles (12) which are larger in diameter than the thickness of the friction layer ( ...

A metallic article having a protective coating and a method of producing a metallic article having a protective coating

METHOD FOR TREATING SURFACES

Pyrophoric materials and methods for making the same

A pyrophoric coating formed by leaching aluminum from an aluminide coated web in which the aluminide coating was formed on or into the web by an exothermic and diffusion reaction of a powder containing aluminum and chromium with or without a transition metal selected from the group consisting of iron, nickel or cobalt and in which the weight ratio of chromium to aluminum is at least 1:50 but no more than about 1:4.

COMPOUND FOR METAL MODIFICATION AND METAL SURFACE RESTORATION

Protecting a surface of a nickel-base article with a corrosion-resistant aluminum-alloy layer

A surface of a nickel-base article such as an internal surface (36) of a gas turbine airfoil (22) is protected with a protective layer (40) of aluminum and at least one other element. To form the protective layer (40), a donor alloy is contacted to the protected surface of the article, and simultaneously the article and the donor alloy are heated to a coating temperature that is greater than about 0.7 of the absolute solidus temperature of the donor alloy but is such that the donor alloy remains in the form of a condensed phase contacting the protected surface of the article. The donor alloy is thereafter interdiffused into the protected surface of the article.

Beschichtung und Verfahren zum Beschichten eines Werkstücks

Bei einem Verfahren zum Beschichten eines Werkstücks wird eine Dispersion feiner Partikel in einer Flüssigkeit auf eine Oberfläche des Werkstücks aufgebracht (102). Die Flüssigkeit wird zumindest teilweise entfernt (103, 104), insbesondere durch Trocknen, um eine Partikelschicht auf dem Werkstück zu erzeugen. Die Partikelschicht wird überalitiert oder überinchromiert (105). Die Partikel weisen eine mittlere Größe von 10 µm oder weniger auf. In a method for coating a workpiece, a dispersion of fine particles in a liquid is applied to a surface of the workpiece (102). The liquid is at least partially removed (103, 104), in particular by drying, to produce a particle layer on the workpiece. The particle layer is over-aliquoted or overinchromated (105). The particles have an average size of 10 μm or less.

SLURRY COMPOSITIONS FOR DIFFUSION COATINGS

Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a Cr-A1 alloy containing about 50 wt% to about 80 wt% Cr in the alloy, LiF in an amount greater than or equal to 0.3 wt% of the Cr-Al alloy, an organic binder, and a solvent.

Sintered neodymium-iron-boron magnet surface treatment method and manufacturing method

THERMOCHEMICAL PROCESS OF TREATMENT OF STEEL PARTS AND STEEL PARTS THUS TRAITEES

PROCESS Of OBTAINING BY DIFFUSION OF COMPOSITE COATINGS ON METAL PARTS AND DEVICE TO IMPLEMENT THIS PROCESS

Coating method for reactive metal

A coating method includes depositing substantially pure hafnium metal, that is free of other elements that are present in more than trace amounts as inadvertent impurities, onto a metallic substrate, and heat treating the metallic substrate to react the hafnium metal with at least one other element to form a protective coating on the metallic substrate.

PROCESS FOR PRODUCING A HIGH-TEMPERATURE PROTECTIVE COATING AND CORRESPONDINGLY PRODUCED COMPONENT

Disclosed is a process for producing a high-temperature protective coating for metallic components, in particular components of turbomachines which are subjected to thermal loading. The process comprises producing a slip from MCrAlY powder, in which M is at least one metal, and from a Cr powder, applying the slip to the component to be coated and subsequently alitizing the component provided with the slip. 1. A process for producing a high-temperature protective coating for metallic components , wherein the process comprises:producing a slip from an MCrAlY powder, in which M represents at least one metal, and from a Cr powderapplying the slip to the component to be coated; andalitizing the component provided with the slip.2. The process of claim 1 , wherein the Cr powder and the MCrAlY powder are selected in a Cr to MCrAlY ratio of less than or equal to 10.3. The process of claim 1 , wherein the Cr powder and the MCrAlY powder are selected in a Cr to MCrAlY ratio of less than or equal to 3.4. The process of claim 1 , wherein the Cr powder and the MCrAlY powder are selected in a Cr to MCrAlY ratio of from 0.001 to 10.5. The process of claim 1 , wherein the Cr powder has a grain size of less than or equal to 20 μm.6. The process of claim 1 , wherein the Cr powder has a mean grain size of less than or equal to 20 μm.7. The process of claim 1 , wherein the MCrAlY powder has a grain size of less than or equal to 20 μm.8. The process of claim 1 , wherein the MCrAlY powder has a mean grain size of less than or equal to 20 μm.9. The process of claim 1 , wherein M represents one or more of Fe claim 1 , Co claim 1 , Ni.10. The process of claim 1 , wherein the slip comprises water and/or at least one liquid organic compound.11. The process of claim 10 , wherein the liquid organic compound comprises an oil.12. The process of wherein at least two layers of slip are applied in succession.13. The process of claim 12 , wherein drying in vacuo and/or in ambient atmosphere and/or ...

Corrosion coating for turbine blade environmental protection

A gas turbine engine turbine blade (10) and method for making the same comprising an airfoil section (12), a platform section (14), an under platform section (16), and a dovetail section (18) having an exterior surface (32), the exterior surface of the dovetail section comprising a shank (26) and a serrated exterior (28). The blade (10) further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of the exterior surface of the under platform section (32), the exterior surface of the dovetail section (26), and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent.

VERFAHREN ZUR HERSTELLUNG EINER PANZERUNG FÜR EIN METALLISCHES BAUTEIL

Process for thermochemical treatment of steel and alloy articles and articles treated in accordance with the said process.

STABLE HIGH TEMPERATURE COATING

A high temperature metallic threaded fastener such as a stainless steel or titanium nut or externally threaded fastener, is coated with a high temperature lubricating coating. The coating is an aqueous solution or suspension of titanium silicate and molybdenum disulfide, and may also include a wetting agent to maintain materials in suspension. Following baking at an elevated temperature the dried lubricating coating includes at least 10% silicon and 20% molybdenum. The coating provides lubrication and avoids seizing or galling despite cycling through very high temperatures well above 500°C (about 932°F).

DIFFUSING TITANIUM AND NITRIDE INTO COATED MATERIALS

A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, titanium and nitride may be diffused into a base material without a coating. The treated base material may further be treated with conventional surface treatments or coatings.

COMPOSITION FOR FORMING A NEOFORMED LAYER ON WEARING SURFACES

The compound for creating a newly formed layer on metal friction surfaces relates to machine building. When repairing and maintaining diverse machines and mechanisms, the compound enables to create a newly formed layer on metal friction surfaces. This layer has both the effect of self-recovery during operation and high tribotechnical characteristics, improved wear resistance and corrosion resistance. The specific feature is the use of natural nickel-iron- magnesium hydrisalacates that in this case act as the base and catalyst, e.g., forsterite Mg 2 9SIO 4 ) or fayalite Fe 2 (SiO 4 ) or one similar thereto, which favors the creation of a newly formed layer on metal friction surfaces and initiates therein the process of mass exchange self-oscillations.

A method for applying coatings on substrates

A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.

Verfahren zum Herstellen einer korrosionsbeständigen und oxidationsbeständigen Beschichtung sowie Bauteil mit einer solchen Beschichtung

Die Erfindung betrifft ein Verfahren zum Herstellen einer korrosionsbeständigen und oxidationsbeständigen Beschichtung. Des weiteren betrifft die Erfindung ein Bauteil mit einer solchen Beschichtung. DOLLAR A Nach dem erfindungsgemäßen Verfahren werden ein Bauteil aus einem Bauteilwerkstoff und ein Schlickerwerkstoff bereitgestellt, wobei der Schlickerwerkstoff neben einem Bindemittel zumindest ein Metallpulver enthält, wobei das Metallpulver aus zumindest 25 Gew.-% aus mindestens einem Metall der Platin-Gruppe besteht, und entweder aus ummantelten Pulverkernen gebildet wird, wobei die Pulverkerne aus mindestens einem Metall der Platin-Gruppe gebildet werden, und wobei die Ummantelungen der Pulverkerne aus einem mit dem Bauteilwerkstoff basisgleichen Material gebildet werden oder aus einer Metallpulverlegierung gebildet wird, die neben dem mindestens einen Metall der Platin-Gruppe mindestens ein mit dem Bauteilwerkstoff basisgleiches Material enthält. Der Schlickerwerkstoff wird zumindest bereichsweise auf das Bauteil unter Ausbildung einer Schlickerschicht aufgetragen. Die Schlickerschicht wird sodann ausgehärtet bzw. getrocknet. Darauffolgend erfolgt eine Wärmebehandlung des mit dem Schlickerwerkstoff zumindest bereichsweise beschichteten Bauteils zum Eindiffundieren der Schlickerschicht in das Bauteil. The invention relates to a method for producing a corrosion-resistant and oxidation-resistant coating. Furthermore, the invention relates to a component with such a coating. DOLLAR A According to the inventive method, a component of a component material and a slip material is provided, wherein the slip material contains at least one metal powder in addition to a binder, wherein the metal powder consists of at least 25 wt .-% of at least one metal of the platinum group, and either is formed from sheathed powder cores, wherein the powder cores are formed from at least one metal of the platinum group, and wherein the cladding of the powder cores are formed from a ...

Coating ferrous articles

Articles of ferrous alloys containing carbon are coated to improve their resistance and smoothness. They are dipped in a molten bath comprising boric acid or a borate, an oxide of a Group Va metal or chromium, and a Group Va metal or chromium (other than the metal forming the oxide).

OXIDATION-RESISTANT COATING AND FORMATION METHOD THEREOF, THERMAL BARRIER COATING, HEAT-RESISTANT MEMBER, AND GAS TURBINE

The present invention provides an oxidation-resistant coating having superior oxidation resistance and superior ductility and toughness for long-term use, and a method for forming the oxidation-resistant coating. An MCrAlY layer primarily containing an MCrA1Y alloy (in which M indicates at least one element of Co and Ni) is formed on a substrate formed of a heat-resistant metal by thermal spraying or EB=VD, and subsequently, aluminum is diffused into a part of the MCrAlY layer in the thickness direction thereof from a side opposite to the substrate.

METHOD FOR FORMING A MIXED CARBIDE LAYER ON THE SURFACE OF A FERROUS ALLOY ARTICLE AND THE TREATING MATERIAL THEREOF

A method and treating material are presented for forming a mixed carbide layer of Va-group elements or Va-group elements and chromium on the surface of a carbon containing ferrous-alloy article. The treating material is composed mainly of boric acid or borate, one or more oxides of Va-group element or chromium and one or more metals or alloys of Va-group elements or chromium (other than the elements forming the oxides). The method comprises heating the treating bath up to its molten state and dipping an article into the molten treating bath. The mixed carbide layer formed on the article has very smooth, surface wear resistant, corrosion resistant and high temperature oxidation resistant.

ALUMINIDE - SILICIDE COATINGS, COATING COMPOSITIONS, PROCESSFOR COATING AND IMPROVED COATED PRODUCTS

An improved aluminide coating especially for heat resistant superalloy substrates. Slurry coating compositions of eutectic metal alloy powders and of non-eutectic metal powders. A process for coating the substrates and the coated metal parts. The coatings have improved resistance to developing cracks and to hot corrosion and oxidation.

PLATINUM ENRICHED, SILICON-MODIFIED CORROSION RESISTANT ALUMINIDE COATING

The oxidation and corrosion resistance of a nickel-base alloy are enhanced by a process which includes first enriching the surface of an alloy substrate with platinum, as by electrolytic deposition, and then simultaneously diffusing aluminum and silicon from a molten state into the platinum-enriched substrate. The invention further provides coatings and coated substrates with enhanced oxidation and corrosion resistance.

Improvements with the superconductors and their manufactoring processes

Process for thermochemical treatment of steel and alloy articles and articles treated in accordance with the said process.

Process for thermochemical treatment of pieces of steel and pieces of steel thus treated

METHOD FOR APPLYING FILM ON SUBSTRATE

PURPOSE: A method for applying protective coatings on substrates employed in high temperature is provided. CONSTITUTION: The method for forming a platinum-aluminide layer on a superalloy substrate includes (i) depositing a platinum slurry on the substrate; (ii) heating the platinum slurry to a temperature high enough to remove substantially all volatile material from the slurry; (iii) depositing an aluminum slurry over the platinum slurry; (iv) heating the aluminum slurry to a temperature high enough to remove substantially all volatile material from the aluminum slurry; and then (v) heating the slurry coated substrate under diffusion treatment conditions sufficient to form a platinum-aluminide layer over the substrate. © KIPO 2002 ...

COMPOSITION FOR FORMING A NEOFORMED LAYER ON WEARING SURFACES

The inventive composition for forming a neoformed layer on wearing surfaces relates to mechanical engineering. Said composition makes it possible to form a neoformed layer on wearing surfaces while repairing and servicing different machines and mechanisms. Said layer exhibits a self-regeneration effect in operation and high tribotechnical characteristics, increased wear and corrosion resistance. The invention is characterised in that natural nickel-iron-magnesian hydrosilicates are used in said composition in the form of a base and catalyst, for example forsterite Mg2(SiO4) or fayalite Fe2(SiO4) or the like or the mixture thereof, promote the production of the neoformed layer on the wearing metal surfaces and initiate mass-exchange self-oscillation process.

METHOD FOR TREATING SURFACES

A method for treating surfaces is provided, in which a material to be treated, such as iron, iron alloys or the like is immersed in a molten bath prepared by adding 5 to 50 weight % of a metal cementing agent consisting of one or more selected from the group consisting of a Group Va element, a substance containing the Group Va element, a Group VIa element and a substance containing the Group VIa element to a salt bath agent consisting of a neutral salt containing 5 to 30 mol % of a borate admixed therewith, to form the carbide of the Group Va element or Group VIa element or the composite carbide of these elements on the surfaces of the material. To the molten bath there may be optionally added 1 to 10 weight % of an adjuvant consisting of one or more selected from the group consisting of the oxysalts of the Groups IVa, Va and VIa elements and/or 1 to 10 weight % of a metal or an alloy thereof selected from the group consisting of a Group IVa metal and an alloy thereof.

PLATINUM ENRICHED, SILICON-MODIFIED CORROSION RESISTANT ALUMINIDE COATING

The oxidation and corrosion resistance of a nickel-base alloy are enhanced by a process which includes first enriching the surface of an alloy substrate with platinum, as by electrolytic deposition, and then simultaneously diffusing aluminum and silicon from a molten state into the platinum-enriched substrate. The invention further provides coatings and coated substrates with enhanced oxidation and corrosion resistance.

PROCESS AND COMPOSITION TO FORM a LAYER CARBUREE ON the SURFACE Of an OBJECT OUT OF IRON ALLOY

METHOD FOR SURFACE HARDENING OF REFRACTORY METALS

A process of converting an outer layer of an object made of a refractory metal, such as titanium, into a carbide of the refractory metal. A molten metal, such as molten lithium, is placed adjacent the outer surface of the object. The lithium does not react with the titanium, nor is it soluble within the titanium to any significant extent at the temperatures involved. The molten lithium contains elemental carbon, that is, free carbon atoms. At high temperature, the carbon diffuses into the titanium, and reacts with titanium atoms to form titanium carbide in an outer layer. Significantly, no other atoms are present, such as hydrogen or oxygen, which can cause problems, because they are blocked by the molten lithium.

Method for forming a two-layered carbide surface on a ferrous-alloy article and resulting product

A method for forming a two-layered carbide surface on a ferrous-alloy article containing at least 0.2 percent by weight of carbon. The formation of such a surface is effected by plating the ferrous alloy article with chromium, to form a chromium layer thereon, and heating the thus-plated article in contact with an element of Group Va and/or chromium (a) to diffuse carbon from the ferrous-alloy article into the chromium layer and convert the chromium layer to an intermediate chromium-carbide layer and (b) thereafter to combine carbon in the intermediate chromium-carbide layer with the element (of Group Va or chromium) and thus form a Group-Va-element-carbide layer and/or another chromium-carbide layer on the intermediate chromium-carbide layer.

Verfahren zur Herstellung einer Korrosionsschutzschicht für Wärmedämmschichten aus hohlen Aluminiumoxidkugeln und äußerster Glasschicht und Bauteil sowie Materialmischung

Durch die Verbindung von hohlen Aluminiumoxidpartikeln und einer äußersten Glasschicht, die insbesondere durch eine Wärmebehandlung erzeugt wird, besteht ein besonderer Korrosionsschutz für keramische Wärmedämmschichten.

Process for coating refractory metal articles

An article of Nb, Ta or alloys of or containing at least 50% of these metals, is provided with an oxidation resistant coating of Ti or Cr or alloys thereof by heating the article for 1 to 5 hours at 800 to 1000 DEG C. in a molten bath comprising an alkali or alkaline earth metal halide, e.g. NaCl, TiCl2 and Ti metal and/or CrCl2 and Cr metal, with or without one or more of the metals Al, V and Zr. The process is preferably carried out in an inert gas atmosphere with the bath being agitated, e.g. by blowing argon therethrough. The dichloride is preferably present on the bath to the extent of 5 to 20 mol per cent. The metals may be added to the bath as powdered alloys. Examples of alloys to be coated are Nb-base alloys with (a) 1%Zr, (b) 10% Ti and 5% Zr, (c) 10% Ti and 10% Mo, and a Ta-base alloy with 10% W. Alloy compositions of the resulting coating are specified, being within the range: 5-10% Nb, 5-40% Cr, balance Ti. A layer of silicon may be applied over the Ti-Cr coated article by ...

ALUMINIDE - SILICIDE COATINGS, COATING COMPOSITIONS, PROCESSFOR COATING AND IMPROVED COATED PRODUCTS

... 2123135 9407004 PCTABS00030 An improved aluminide coating especially for heat resistant superalloy substrates. Slurry coating compositions of eutectic metal alloy powders and of non-eutectic metal powders. A process for coating the substrates and the coated metal parts. The coatings have improved resistance to developing cracks and to hot corrosion and oxidation.

METHOD FOR FORMING A MIXED CARBIDE LAYER ON THE SURFACE OF A FERROUS ALLOY ARTICLE AND THE TREATING MATERIAL THEREOF

PROCESS FOR DIFFUSING TITANIUM AND NITRIDE INTO A MATERIAL HAVING A GENERALLY COMPACT, GRANULAR MICROSTRUCTURE AND PRODUCTS PRODUCED THEREBY

A method for diffusing titanium and nitride into a base material having a generally compact, granular microstructure (e.g., carbide). The method generally includes the steps of providing a base material having a generally compact, granular microstructure; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, the base material may further be treated with conventional surface treatments or coatings.

TD (Thermal Diffusion Carbide Coating Process) treatment method of die surface

本发明涉及一种模具表面TD处理方法。包括如下步骤：1)TD处理：首先将熔盐介质加热到1000℃‑1100℃，然后将工件置于上述熔盐介质中10‑20小时，使工件表面形成10‑15μm的冶金碳化物，其表面硬度为2700‑3600HV；2)冷却；3)回火处理；4)清洗；5)后处理。本发明简化了TD处理工序，降低了能耗，工件变形小，节约成本，同时清洗的工序不会有污水排放，符合节能环保的可持续发展。

PROCEDE ET COMPOSITION POUR FORMER UNE COUCHE CARBUREE SUR LA SURFACE D'UN OBJET EN ALLIAGE DE FER

Procédé et composition pour former une couche carburée sur la surface d'un objet en alliage de fer. Le bain de traitement comprend, outre de l'acide borique ou du borate, un oxyde d'un élément du groupe Va ou un oxyde de chrome et un ou plusieurs métaux ou alliages d'éléments du groupe Va ou du chrome, pourvu que les éléments sous forme métallique soient autres que ceux sous forme d'oxyde. Industries automobiles.

AN ELECTROLESS PLATING PROCESS

An electroless plating method for use in metal plating on a porous substrate is disclosed. It uses selective contact of the plating metal salt solution with a reducing solution on the activated surface on or inside the porous substrate. This electroless plating method in the setup is useful for unmanned, automatic operation resulting in almost 100 % membrane (pure / composite) with substantially no pinholes or cracks.

PROCESS FOR DIFFUSING TITANIUM AND NITRIDE INTO A MATERIAL HAVING A COATING THEREON AND PRODUCTS PRODUCED THEREBY

A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, titanium and nitride may be diffused into a base material without a coating. The treated base material may further be treated with conventional surface treatments or coatings.

Method for applying coatings on substrates

A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.

COATING FERROUS ARTICLES

Method and component mixture for producing an anti-corrosion layer for an insulating layer consisting of hollow aluminum oxide spheres and outermost glass layers

ELECTROLESS PLATING PROCESS

An electroless plating method for use in metal plating on a porous substrate is disclosed. It uses selective contact of the plating metal salt solution with a reducing solution on the activated surface on or inside the porous substrate. This electroless plating method in the setup is useful for unmanned, automatic operation resulting in almost 100% membrane (pure/composite) with substantially no pinholes or cracks. 1. An electroless plating process for 100% membrane preparation using a porous substrate comprising the steps of:i. providing cleaned, sensitized and activated porous substrate selected from the group consisting of glass, sintered metal and ceramics;ii. contacting first surface of the substrate as provided in step (i) with plating solution;iii. contacting second surface which is located opposite to the first surface of the substrate as provided in step (i) with reducing solution;iv. applying pressure to one of the said plating and reducing solutions causing permeation of the pressurized solution to the other side of the substrate resulting contact between plating solution and reducing solution thereby causing deposition of the metal on the substrate surface;v. rinsing the metal deposited substrate surface with water and heat treating the same at predetermined temperature to obtain the metal plated surface.2. The electroless plating process as claimed in claim 1 , wherein said process is characterized by contacting one surface of the substrate with plating solution and contacting second surface of substrate with reducing solution.3. The electroless plating process as claimed in claim 1 , wherein the plating solution used is selected from metal salt solutions that can produce metal/metal alloy ions and can be reduced by reducing ion like hydrogen to produce metal.4. The electroless plating process as claimed in claim 1 , wherein the reducing solution used is selected from solution that can produce a reducing ion like hydrogen that can reduce the metal salt ...

Method and Apparatus for Depositing Protective Coatings and Components Coated Thereby

A method and apparatus for forming a coating on a surface of a superalloy substrate area of a gas turbine engine component, and the component produced by the method, includes providing a slurry with selected metal powders suspended in a silane containing solution, applying the slurry by brushing, spraying or 3D printing using a piezoelectric dot matrix printhead to the superalloy substrate, drying the applied slurry, and depending on the aluminum content desired in the coating, including a sufficient amount of aluminum in the slurry or aluminiding the coated component. The method and apparatus can be used to obtain components having different superalloy coating thicknesses or compositions in different areas of the component based on the particular operating environment for each area with a single heat treatment and/or aluminiding cycle for obtaining the different coatings. 1363715. A method of forming a coating ( , ) on a gas turbine engine component () , comprising:{'b': 80', '82', '84', '84, 'mixing a first slurry () having a nominal composition comprising a non-hydrolized silane () and a metal powder (), wherein the metal powder () comprises one or more of the group consisting of Ni, Cr, Co, Ti, Re, Pt, Al, Si, Pd, Rh, Zr, Hf, and Y;'}{'b': 80', '86', '15, 'applying the first slurry (), at a first deposition rate, to a surface () of a first area of the gas turbine engine component ();'}{'b': 80', '86, 'drying the applied first slurry () on the surface () of the first area;'}{'b': 15', '220', '15, 'placing the gas turbine engine component () in a furnace () and heating the gas turbine engine component () in a single heating cycle to form the coating.'}2. The method of wherein the slurry comprises Al in sufficient amounts that an aluminide coating is formed during the heating process without an additional source of aluminum.3. The method of wherein the heating cycle is a vapor phase aluminization cycle.4848436378680. The method of or wherein the metal powder () ...

SURFACE TREATMENT METHOD FOR NICKEL-BASED METALLIC GLASSES TO REDUCE NICKEL RELEASE

Surface treatment methods for Ni-based metallic glasses are provided that promote passivation and decrease the amount of Ni released when the Ni-based metallic glass is exposed to a saline containing environment. 1. A method of treating the surface of a Ni-based metallic glass comprising:immersing at least a portion of the Ni-based metallic glass in a chemical treatment solution comprising at least one of an acid solution, a chromate solution, or a molybdate solution to produce a surface treated portion; andremoving the surface treated portion from the chemical treatment solution;wherein the Ni ion release rate from the surface treated portion when immersed in a saline solution for one day is less than 80% of the Ni ion release rate from an as-cast Ni-based metallic glass having the same composition and having been immersed in the saline solution for one day.2. The method of treating the surface of a Ni-based metallic glass of claim 1 , wherein a duration of immersing in the chemical treatment solution is at least 1 minute.3. The method of treating the surface of a Ni-based metallic glass of claim 1 , wherein the temperature of the chemical treatment solution ranges between 10° C. and 80° C.4. The method of treating the surface of a Ni-based metallic glass of claim 1 , wherein the chemical treatment solution is a nitric acid solution claim 1 , and where the nitric acid concentration is between 5 and 60 volume %.5. The method of treating the surface of a Ni-based metallic glass of claim 1 , wherein the chemical treatment solution is a sodium dichromate solution claim 1 , and where the sodium dichromate concentration is between 5 and 200 g/L.6. The method of treating the surface of a Ni-based metallic glass of claim 1 , wherein the chemical treatment solution is a disodium molybdate solution claim 1 , and where the disodium molybdate concentration is between 10 and 100 g/L.7. The method of treating the surface of a Ni-based metallic glass of claim 1 , where the saline ...

Slip and process for producing an oxidation- and corrosion-resistant diffusion layer

The present invention relates to a process for producing a diffusion layer for protecting temperature-stressed components, in particular of turbomachines, against oxidation and corrosion. The process comprises application of at least one slip to a component surface on which the diffusion layer is to be produced, and drying and/or hardening of the at least one slip by a heat treatment at a first temperature and diffusion heat treatment at a second temperature. The slip comprises Al-containing powder, Si-containing powder and a binder and also a Cr-containing powder which does not comprise any hexavalent chromium. In addition, the invention provides a corresponding slip.

METHODS AND SYSTEMS FOR COATING A STEEL SUBSTRATE

The present disclosure provides systems and methods for depositing a metal layer adjacent to or on a substrate. Substrates may comprise, for example, one or more of iron, chromium, nickel, silicon, vanadium, titanium, boron, tungsten, aluminum, molybdenum, cobalt, manganese, zirconium, and niobium, oxides thereof, nitrides thereof, sulfides thereof, or any combination thereof. A substrate may be a steel substrate. A metal layer may be deposited via, for example, roll coating, vapor deposition, slurry deposition, or electrochemical deposition. 167-. (canceled)68. A method for forming at least one metal layer adjacent to a substrate , comprising:(a) providing said substrate having a grain size that is from about International Association for Testing and Materials (ASTM) 1 to ASTM 30, wherein said substrate includes at least two of (i) carbon at less than or equal to about 0.1 wt %, (ii) manganese from about 0.1 wt % to 3 wt %, (iii) silicon at less than or equal to about 1 wt %, (iv) vanadium at less than or equal to about 0.1 wt %, and (v) titanium at less than or equal to about 0.5 wt %;(b) depositing at least one metal-containing layer adjacent to said substrate; and(c) annealing said substrate and said at least one metal-containing layer, thereby forming said at least one metal layer adjacent to said substrate, wherein said at least one metal layer has a grain size greater than about ASTM 6.69. The method of claim 68 , wherein said substrate includes at least three of (i) carbon at less than or equal to about 0.1 wt % claim 68 , (ii) about 0.1 wt % to 3 wt % manganese claim 68 , (iii) silicon at less than or equal to about 1 wt % claim 68 , (iv) vanadium at less than or equal to about 0.1 wt % claim 68 , and (v) titanium at less than or equal to about 0.5 wt %.70. The method of claim 69 , wherein said substrate includes at least four of (i) carbon at less than or equal to about 0.1 wt % claim 69 , (ii) about 0.1 wt % to 3 wt % manganese claim 69 , (iii) silicon at ...

ALUMINUM-CHROMIUM DIFFUSION COATING

A process includes applying a slurry to a surface of a metallic article to produce a slurry film on the surface. The slurry is composed of a liquid carrier, chromium and aluminum, and an agent that is reactive with the chromium and aluminum to form intermediary compounds. The article and slurry film are then thermally treated at an activation temperature at which the agent reacts with the chromium and aluminum to form the intermediary compounds. The intermediary compounds deposit the chromium and aluminum on the surface. The thermal treating also diffuses the chromium and aluminum into a sub-surface region of the article such that the sub-surface region becomes enriched with chromium and aluminum. 1. A process comprising: a liquid carrier,', 'chromium and aluminum, and', 'an agent that is reactive with the chromium and aluminum to form intermediary compounds; and, 'applying a slurry to a surface of a metallic article to produce a slurry film on the surface, where the slurry is composed of,'}thermal treating the article and slurry film at an activation temperature at which the agent reacts with the chromium and aluminum to form the intermediary compounds, the intermediary compounds depositing the chromium and aluminum on the surface, the thermal treating also diffusing the chromium and aluminum into a sub-surface region of the article such that the sub-surface region becomes enriched with chromium and aluminum.2. The process as recited in claim 1 , wherein the metallic article is an airfoil that includes an internal passage claim 1 , and the surface is in the internal passage.3. The process as recited in claim 1 , wherein the chromium and aluminum are in the form of chromium-aluminum alloy particles.4. The process as recited in claim 3 , wherein the chromium-aluminum alloy particles have a composition claim 3 , by weight claim 3 , of 5% to 10% aluminum and 95% to 90% chromium.5. The process as recited in claim 1 , wherein the agent is a halide.6. The process as ...

SYSTEM AND METHOD FOR SURFACE HARDENING OF REFRACTORY METALS

A process of converting an outer layer of an object made of a refractory metal, such as titanium, into a carbide of the refractory metal. A molten metal, such as molten lithium, is placed adjacent the outer surface of the object. The lithium does not react with the titanium, nor is it soluble within the titanium to any significant extent at the temperatures involved. The molten lithium contains elemental carbon, that is, free carbon atoms. At high temperature, the carbon diffuses into the titanium, and reacts with titanium atoms to form titanium carbide in an outer layer. Significantly, no other atoms are present, such as hydrogen or oxygen, which can cause problems, because they are blocked by the molten lithium. 1. An object , comprising:a) an inner region consisting of titanium, or a titanium alloy, of 98-100 weight percent purity; and i) titanium, or a titanium alloy and carbon,', 'ii) titanium, or a titanium alloy and nitrogen, or', 'iii) titanium, or a titanium alloy carbon, and nitrogen, plus trace elements not exceeding 2 weight percent total., 'b) an outer region, adjacent to and outside the inner region, which contains only'}2. The object according to claim 1 , in which the outer region surrounds the inner region.3. The object according to claim 2 , in which the outer region includes an outer surface of the object.4. The object according to which comprises a gear claim 1 , bearing claim 1 , bearing roller claim 1 , ball bearing claim 1 , bushing claim 1 , armor claim 1 , tubular products claim 1 , medical product (e.g. claim 1 , implants) claim 1 , dental products claim 1 , sporting goods (e.g. claim 1 , golf head or skies) claim 1 , bicycle products claim 1 , sheet product cutting tool claim 1 , or other products made of titanium or its alloys that need hard surface.5. An object claim 1 , comprising: i) titanium, vanadium, zirconium, hafnium, tungsten, molybdenum, or chromium, or alloys of these,', 'ii) no other elements, except trace elements not ...

用于冲裁模表面强化的梯度覆层的制备方法

本发明公开了一种用于冲裁模表面强化的梯度覆层的制备方法，包括以下步骤：对模具进行预热处理、清理和机械加工；进行TRD盐浴配盐：盐浴配方按质量百分比为：无水硼砂：70‑75%、供铬剂：8‑12%、供铌剂：4‑6%、还原剂：3‑6%、活化剂：8‑10%；进行盐浴铬铌共渗处理：将模具浸入熔化的盐浴中，第一阶段温度为880‑910℃，保温时间2‑3.5h；第二阶段温度为930‑940℃，保温时间2‑3h；第三阶段温度为980‑1040℃，保温时间3‑4h；将模具取出后经过油淬后回火处理。本发明提出的用于冲裁模表面强化的梯度覆层的制备方法，改善了覆层应力过渡不均的现象，提高了模具服役性能和使用寿命。

销轴表面钒钛共渗强化工艺

本发明公开了销轴表面钒钛共渗强化工艺，（1）精磨销轴；（2）盐浴配方：5‑10%无水硼砂，45‑55%粉状钒粉，40‑45%二氧化钛以及一定量的还原剂，称取各组分并混合均匀；（3）加入精磨的销轴充分搅拌后装入密封罐内，并在1000℃环境中保温8‑10h，进行钒钛共渗；（4）经过钒钛共渗后的销轴随炉冷却；（5）冷却后的销轴用沸水煮去表层残余的废盐；（6）后续对销轴进行常规淬火与回火。具有以下优点：渗透速度快，钒钛共渗层的耐磨性、抗擦伤性能比渗铬层强，渗层更加均匀；钒钛共渗销轴的渗层相比渗铬的渗层要更加质密，渗层与基体之间结合强度更好，表面强度大大提高，提高了耐磨性能和剪切强度。

Salt-bath rare earth chromium-titanium composite permeating agent and application process thereof

本发明涉及了一种盐浴稀土铬钛复合渗剂，其特征在于按质量百分比计，渗铬剂它包括由二氯化钡43‑49％，氯化钾20‑26％，三氧化二铬8‑12％，铝粉2‑5％，富铈稀土6‑8％，氟化钠6‑10％组成；渗钛剂它包括由二氯化钡43‑49％，氯化钾20‑26％，二氧化钛8‑12％，铝粉2‑5％，富铈稀土6‑8％，氟化钠6‑10％组成。本发明获得的覆层硬度极高，具有极低的摩擦系数，同时覆层截面硬度呈现梯度平缓变化，降低了覆层的应力集中，减小了脆裂倾向，提高了覆层抗冲击能力，大幅提高了冷作模具钢或机械零部件的使用寿命。

Introduction of at least one of hafnium, lanthanum and yttrium into a superalloy component

A method of improving a superalloy component (1) by at least one additive chosen from the group of Hf, La, Y is provided. The at least one additive is introduced into a surface layer (7) of the component (1).

Superalloy component and method of improving the same

A method of improving a superalloy component (1) by at least one additive chosen from the group of Hf, La, Y is provided. The at least one additive is introduced into a surface layer (7) of the component (1).

Superalloy component and method of improving the same

A method of improving a superalloy component (1) by at least one additive chosen from the group of Hf, La, Y is provided. The at least one additive is introduced into a surface layer (7) of the component (1).

Superalloy component and method of improving the same

A method of improving a superalloy component is proposed. The method involves the introduction of at least one additive into the superalloy component, the at least one additive being selected from the group of Hf, La, and Y. The at least one additive is introduced into a surface layer of the component. Preferably, the surface layer has a depth of 0.5 mm or less. The component may include, for example, an airfoil of a gas turbine.

Method for producing a high temperature protective coating and correspondingly manufactured component

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Hochtemperaturschutzbeschichtung für metallische Bauteile, insbesondere temperaturbelastete Bauteile von Strömungsmaschinen, bei welchem ein Schlicker aus einem MCrAlY - Pulver, bei dem M mindestens ein Metall ist, und aus einem Cr - Pulver hergestellt wird, wobei der Schlicker auf dem zu beschichtenden Bauteil aufgetragen wird und das mit dem Schlicker versehene Bauteil alitiert wird. Die Erfindung betrifft außerdem ein entsprechend hergestelltes Bauteil. The present invention relates to a process for producing a high temperature protective coating for metallic components, in particular temperature - loaded components of turbomachines, in which a slurry of an MCrAlY powder in which M is at least one metal and of a Cr powder is produced, wherein the slurry is applied to the component to be coated and the provided with the slip component is alitiert. The invention also relates to a correspondingly manufactured component.

Surface treatment

Patent JPS5643310B2

The preparation method of gradient coating for blanking die surface peening

本发明公开了一种用于冲裁模表面强化的梯度覆层的制备方法，包括以下步骤：对模具进行预热处理、清理和机械加工；进行TRD盐浴配盐：盐浴配方按质量百分比为：无水硼砂：70‑75%、供铬剂：8‑12%、供铌剂：4‑6%、还原剂：3‑6%、活化剂：8‑10%；进行盐浴铬铌共渗处理：将模具浸入熔化的盐浴中，第一阶段温度为880‑910℃，保温时间2‑3.5h；第二阶段温度为930‑940℃，保温时间2‑3h；第三阶段温度为980‑1040℃，保温时间3‑4h；将模具取出后经过油淬后回火处理。本发明提出的用于冲裁模表面强化的梯度覆层的制备方法，改善了覆层应力过渡不均的现象，提高了模具服役性能和使用寿命。

Corrosion coating for turbine blade environmental protection

A gas turbine engine turbine blade (10) and method for making the same comprising an airfoil section (12), a platform section (14), an under platform section (16), and a dovetail section (18) having an exterior surface (32), the exterior surface of the dovetail section comprising a shank (26) and a serrated exterior (28). The blade (10) further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of the exterior surface of the under platform section (32), the exterior surface of the dovetail section (26), and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent.

Corrosion coating for turbine blade environmental protection

A method for making a gas turbine engine turbine blade comprising an airfoil section a platform section, an under platform section, and a dovetail section, the exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further includes a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of the exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the aluminide layer having a concentration of silicon at a surface of the aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the aluminide layer in the range of about 5 weight percent to about 25 weight percent.

Aluminide-silicide coatings, coating compositions, process for coating and improved coated products

An improved aluminide coating especially for heat resistant superalloy substrates. Slurry coating compositions of eutectic metal alloy powders and of non-eutectic metal powders. A process for coating the substrates and the coated metal parts. The coatings have improved resistance to developing cracks and to hot corrosion and oxidation.

Method for forming a coating substantially free of deleterious refractory elements on a nickel- and chromium-based superalloy

The oxidation and corrosion resistance of a nickel-base alloy are enhanced by a process which includes first enriching the surface of an alloy substrate with platinum, as by electrolytic deposition, and then simultaneously diffusing aluminum and silicon from a molten state into the platinum-enriched substrate. The invention further provides coatings and coated substrates with enhanced oxidation and corrosion resistance.

Corrosion coating for turbine blade environmental protection

A gas turbine engine turbine blade comprising an airfoil section, a platform section, an under platform section, and a dovetail section, an exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of an exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent.

Corrosion coating for turbine blade environmental protection

A gas turbine engine turbine blade comprising an airfoil section, a platform section, an under platform section, and a dovetail section, an exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of an exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent.

Corrosion coating for turbine blade environmental protection

The present invention is a gas turbine engine turbine blade comprising an airfoil section having at least an exterior surface, a platform section having an exterior surface, an under platform section having an exterior surface, and a dovetail section having an exterior surface, the exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of the exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent. The present invention is also a method for making such a gas turbine engine blade.

Method for producing an inlet lining

Die Erfindung betrifft ein Verfahren zum Herstellen eines Einlaufbelags auf einem statorseitigen Bauteil einer Turbomaschine, insbesondere einer Gasturbine, mit zumindest folgenden Schritten: a) Bereitstellen eines statorseitigen, mit einem Einlaufbelag zu versehenden Bauteils einer Turbomaschine; b) Bereitstellen einer Mischung aus einem Lösungsmittel, im Lösungsmittel unlöslichen Partikeln eines metallischen Grundwerkstoffs für den Einlaufbelag und einem Füllstoff, wobei der Füllstoff mindestens einen in dem Lösungsmittel löslichen Bestandteil aufweist; c) Auftragen der Mischung auf das statorseitige Bauteil; d) Trocknen des statorseitigen Bauteils und der auf das Bauteil aufgetragenen Mischung unter zumindest teilweisem Austreiben des Lösungsmittels zur Bereitstellung eines im Bereich der aufgetragenen sowie getrockneten Mischung porösen Grünkörpers; e) Diffusionswärmebehandlung des Bauteils zur Eindiffusion von Aluminium und/oder Chrom und zur Ausbildung intermetallischer Phasen im sich ausbildenden Einlaufbelag. The invention relates to a method for producing a running-in coating on a stator-side component of a turbomachine, in particular a gas turbine, with at least the following steps: a) providing a stator-side component of a turbomachine to be provided with a running-in coating; b) providing a mixture of a solvent, particles insoluble in the solvent of a metallic base material for the running-in coating and a filler, the filler having at least one constituent which is soluble in the solvent; c) applying the mixture to the component on the stator side; d) drying the component on the stator side and the mixture applied to the component with at least partial expulsion of the solvent to provide a green body which is porous in the area of the applied and dried mixture; e) Diffusion heat treatment of the component for the diffusion of aluminum and / or chromium and for the formation of intermetallic phases in the running-in coating that is being formed.

Exothermically formed aluminide coating

Pyrophorically activated aluminides of iron, nickel and cobalt, or mixtures thereof, are formed as discs or as coatings on substrates such as thin foils. The aluminide can be formed in situ by reacting aluminum powder with the aluminide-forming metal. Mixtures of these reactants can be applied to a substrate as such or suspended in a liquid like water or volatilizable organic liquids. Water is preferably used with a little binder such as an alkali metal silicate. An inhibitor is used to keep the water from reacting with finely-divided aluminum, and those silicates also perform such function. The pyrophoric products can be discharged to decoy heat-seeking missiles, or they can have their pyrophoricity destroyed to make catalysts. Pyrophoric action can be heightened by additives such as boron, and by post treatment with mild acid.

Slurry compositions for diffusion coatings

Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially uniform coating thicknesses are achieved independent of applied slurry composition thickness or application method. The slurry coating composition of the invention comprises a Cr-Al alloy containing about 50 wt % to about 80 wt % Cr in the alloy, LiF in an amount greater than or equal to 0.3 wt % of the Cr-Al alloy, an organic binder, and a solvent.

A method of preparing performance Nd Fe B sintered magnet

本发明公开了一种制备高性能烧结钕铁硼磁体的方法，首先将熔点温度为400‑900℃、且含有至少一种稀土元素的合金加热至熔融，合金的加热温度高于合金的熔点温度且低于1000℃，然后将预热至温度为800℃‑1000℃的烧结钕铁硼磁体浸入扩散源中，浸泡时间不超过30s，接着烧结钕铁硼磁体拉出扩散源的液面后，采用风刀将温度为800℃‑1000℃的惰性气体喷射到烧结钕铁硼磁体表面，最后对烧结钕铁硼磁体不降温，先在800℃‑1000℃条件下对进行晶界扩散处理，然后在450℃‑550℃条件下进行低温回火处理；优点是扩散效率高，且过渡流转环节少，工艺过程简单，连续性强。

Aluminum-chromium diffusion coating

A process includes applying a slurry to a surface of a metallic article to produce a slurry film on the surface. The slurry is composed of a liquid carrier, chromium and aluminum, and an agent that is reactive with the chromium and aluminum to form intermediary compounds. The article and slurry film are then thermally treated at an activation temperature at which the agent reacts with the chromium and aluminum to form the intermediary compounds. The intermediary compounds deposit the chromium and aluminum on the surface. The thermal treating also diffuses the chromium and aluminum into a sub-surface region of the article such that the sub-surface region becomes enriched with chromium and aluminum.

Surface-treating method for iron alloy material

Patent DE3539232C2

Method of improving a superalloy component

Process for diffusing titanium and nitride into a material having a coating thereon and products produced thereby

A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 430° C. to about 670° C.; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, titanium and nitride may be diffused into a base material without a coating. The treated base material may further be treated with conventional surface treatments or coatings.

Dip coat and method for producing an oxidation and corrosion resistant diffusion layer

Die vorliegende Erfindung betrifft einen Schlicker für ein Verfahren zu Herstellung einer Diffusionsschicht für den Oxidations - und Korrosionsschutz von temperaturbelasteten Bauteilen, insbesondere von Strömungsmaschinen, wobei das Verfahren die folgenden Schritte aufweist: Bereitstellung mindestens eines Schlickers, Auftragen des mindestens einen Schlickers auf einer Bauteilfläche, an der die Diffusionsschicht erstellt werden soll, Trocknung und/oder Aushärtung des mindestens einen Schlickers mit einer Wärmebehandlung bei einer ersten Temperatur und Diffusionsglühen bei einer zweiten Temperatur, wobei der Schlicker Al - haltiges Pulver und Si - haltiges Pulver und ein Bindemittel sowie ein Cr - haltiges Pulver umfasst, wobei das Cr - haltige Pulver kein sechswertiges Chrom aufweist. Außerdem umfasst die Erfindung einen entsprechenden Schlicker sowie ein Verfahren, bei dem ein Basisschlicker mit mindestens einem Halogenid, einem Cr - haltigen Pulver und einem Bindemittel in mindestens einer ersten Schicht (8) aufgebracht wird und auf der ersten Schicht mindestens eine zweite Schicht (9) mit einem Schlicker aufgebracht wird, der Al - haltiges Pulver und Si - haltiges Pulver und ein Bindemittel umfasst, wobei weder das Cr - haltige Pulver noch das Halogenid sechswertiges Chrom aufweisen. The present invention relates to a slurry for a process for producing a diffusion layer for the oxidation and corrosion protection of temperature - loaded components, in particular of turbomachines, the process comprising the following steps: Providing at least one slip, Applying the at least one slip on a component surface at which the diffusion layer is to be created, Drying and / or curing of the at least one slip with a heat treatment at a first temperature and diffusion annealing at a second temperature, the slip comprising Al-containing powder and Si-containing powder and a binder and a Cr-containing powder, wherein the Cr containing powder has no hexavalent chromium. In ...

Method for producing a corrosion-resistant and oxidation-resistant coating and component comprising a coating of this type

The invention relates to a method for producing a corrosion-resistant and oxidation-resistant coating, in addition to a component comprising a coating of this type. According to the invention, a component is prepared from a component material and a slurry. In addition to a binding agent, the slurry contains at least one metal powder, said powder consisting of at least 25 wt. % of at least one metal in the platinum group and is either formed from encased powder cores, (the latter consisting of at least one metal in the platinum group and said casing of the powder core consisting of a material that has the same base as the component material), or from a metal powder alloy, which contains at least one material that has the same base as the component material, in addition to at least one metal of the platinum group. The slurry is applied at least to sections of the component, forming a slurry coating. Said coating is then hardened or dried. The component that is coated at least in sections with the slurry and is then subjected to a thermal treatment so that said coating diffuses into the component.

Aluminide diffusion coating system and process for forming an aluminide diffusion coating system

A process for forming an aluminide coating system (100) on a substrate (102). The process includes preparing a slurry including, by weight, about 35 to about 65% of an aluminum donor powder, the aluminum donor material comprising at least 35% aluminum, about 1 to about 25% of a binder, and balance essentially carrier. The slurry is applied to the substrate (102). The substrate (102) is a nickel or cobalt based superalloy being essentially free of aluminum. The slurry is heated to form an aluminide diffusion coating (100,106) including an additive aluminide layer (106,108) and an interdiffusion zone (108) disposed between the substrate (102) and the additive aluminide layer (106,108).

Coating method for reactive metal

Compound for metal modification and metal surface restoration

The invention refers to mechanical engineering and metallurgy and can be predominantly used for the development of cermet alloys and surfaces based on ferrous and nonferrous metals that possessing high tribotechnical characteristics, wear resistance and corrosion stability, and also for restoration of worn-out metal surfaces by forming a cermet layer upon them. The compound represents a mixture with the dispersion of 0.1-10.0 νm that contains serpophite in the amount of 40-70 % of the compound mass; kaolinite, for example amesite, in the amount of 10-40 % of the compound mass; crystallizer, for example pyrolusite, in the amount of 5-10 % of the compound mass; and catalyst, for example metasilicate, in the amount of 5-10 % of the compound mass. The invention provides obtaining cermet layers that process high strength, homogeneity of structure and necessary thickness, the cermet having specified predictable parameters, both in the bulk and at the surface of ferrous and non-ferrous metals and alloys, a long storage time, and a variety of application areas.

Diffusing titanium and nitride into coated materials

본 발명은 종래의 표면 처리 또는 코팅을 이용하여 기재 상에 코팅을 가지는 기재 내로 티탄 및 질화물을 확산시키는 방법에 관한 것이다. 이 방법은 일반적으로, 기재 상에 코팅을 가지는 기재를 제공하는 단계; 시안산나트륨 및 시안산칼륨으로 이루어진 군으로부터 선택되는 염 및 이산화나트륨을 포함하는 염 조를 제공하는 단계; 상기 조에 티탄 화합물의 전기 분해에 의해 형성된 금속 티탄을 분산시키는 단계; 염 조를 약 430℃ 내지 약 670℃ 범위의 온도로 가열하는 단계; 및 기재를 약 10 분 내지 약 24 시간 동안 염 조에 침지시키는 단계를 포함한다. 본 발명의 다른 측면에 따르면, 티탄 및 질화물을 코팅을 가지지 않는 기재 내로 확산시킬 수 있다. 처리된 기재는 종래의 표면 처리 또는 코팅을 이용하여 추가로 처리할 수 있다. The present invention relates to a method of diffusing titanium and nitride into a substrate having a coating on the substrate using conventional surface treatment or coating. The method generally comprises the steps of providing a substrate having a coating on a substrate; Providing a salt bath comprising a salt selected from the group consisting of sodium cyanate and potassium cyanide and sodium dioxide; Dispersing the titanium metal formed by electrolysis of the titanium compound into the above-mentioned solution; Heating the salt bath to a temperature in the range of about 430 ° C to about 670 ° C; And immersing the substrate in a salt bath for about 10 minutes to about 24 hours. According to another aspect of the present invention, titanium and nitride can be diffused into a substrate having no coating. The treated substrate may be further treated using conventional surface treatment or coating.

Method for applying high-temperature coatings to products from niobium alloys

Method for hardening metal workpieces

The invention relates to a method for hardening or treating metal components or workpieces or materials, wherein foreign atoms of a metal melt which surrounds the workpiece and is based on a low melting metal or a low melting alloy are introduced into the workpiece which is to be hardened. The low melting metal is a metal or an alloy whose melting point lies below 600 °C. In one embodiment, the invention relates to a method for hardening workpieces which are based on precious steel, wherein said workpieces which are to be hardened and which are based on precious steel are heated in a hot metal melt whose temperature lies between 200 °C to 600 °C and are exposed to a gaseous phase consisting of unsaturated and/or saturated hydrocarbons which is present above the metal melt and which provides carbon, whereby the carbon dissolved in the metal melt results in a hardening of the surface of the precious-metal based workpiece.

Monolithic catalysts and related process for manufacture

The present invention is directed to a substrate, such as a honeycomb having a plurality of parallel channels defined by the honeycomb walls. The honeycomb has different zones along the length of the channels. The zones are defined by their coating (or lack of coating) and extend for a length of the channel in which there is the same coating and architecture. Soluble components in coating compositions are fixed in their respective zones.

Titanium and nitride are diffused into the method in coated material

一种采用常规表面处理或涂布将钛和氮化物扩散到其上具有涂层的基材中的方法。所述方法通常包括以下步骤：提供其上具有涂层的基材；提供盐浴，所述盐浴包含过氧化钠和选自氰酸钠和氰酸钾的盐；在所述盐浴中分散由钛化合物电解形成的金属钛；将盐浴加热到约430℃‑约670℃；和基材浸泡在盐浴中持续约10分钟‑约24小时。根据本发明的另一方面，可将钛和氮化物扩散到不具有涂层的基材中。该经处理的基材可进一步采用常规表面处理或涂布处理。

Method for producing a corrosion protection layer for thermal insulation layers made of hollow aluminum oxide balls and glass layer and component as well as material mixture

The invention relates to special type of corrosion protection for ceramic thermal insulation layers which is produced by joining hollow aluminum oxide particles and an outer glass layer, which is produced in particular by thermal treatment.

Method for treating a surface of carbon steel

This surface treatment is applied to forming a coating layer or diffusion layer of vanadium carbide on the surface of a carbon steel for cold forging or press. The carbon steel contains over 3wt.% C. The surface layer is formed by immersion of the carbon steel in a surface treatment solution containing of molten salt composed of boras(Na2B4O7), metal oxides (or oxidant, V2O5) and reducing agent (B4C), and by agitation of the solution at 900 to 1,100deg.C for over 30min. The solution comprises 13 to 25wt.% V2O5, 3 to 8wt.% B4C and the balance of Na2B4O7. The purity of V2O5 and B4C are respectively over 85% and 95%. The vessel for surface treatment is produced by the coating of Al on the inner face of the stainless steel vessel and drying of coating layer at 900=F50deg.C.

Surface treating method

Surface treatment

MATERIAL AND PROCESS FOR CREATING A MIXED CARBIDE LAYER ON CARBON-BASED IRON ALLOY OBJECTS

Process for diffusing titanium and nitride into a material having a coating thereon and products produced thereby

A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 430° C. to about 670° C.; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, titanium and nitride may be diffused into a base material without a coating. The treated base material may further be treated with conventional surface treatments or coatings.

Process for diffusing titanium and nitride into a material having a generally compact, granular microstructure and products produced thereby

A method for diffusing titanium and nitride into a base material having a generally compact, granular microstructure (e.g., carbide). The method generally includes the steps of providing a base material having a generally compact, granular microstructure; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, the base material may further be treated with conventional surface treatments or coatings.

The method and component and material blends of the corrosion protective layer of thermal insulation layer of the manufacture for being made of hollow alumina balls and outermost glassy layer

本发明涉及用于陶瓷的隔热层的特别的防腐蚀保护，其通过将空心的氧化铝颗粒和最外部的玻璃层结合产生，所述玻璃层尤其通过热处理产生。

Platinum enriched silicon modified corrosion resistant aluminum coating

A kind of slurry process prepares the alloying layer thickness control method of Al-Si co-infiltrating coating

本发明公开了一种料浆法制备铝硅共渗涂层的渗层厚度控制方法，制备渗铝硅涂层的具体步骤为：1)对待渗铝硅试件进行预处理，再对待渗铝硅试件的表面均匀喷涂料浆，然后再进行自然风干；2)将自然风干后的待渗铝硅试件置于烘箱中烘干固化；3)将烘干固化后的待渗铝硅试件进行烧结，并在氩气或空气氛围下进行热处理，然后再冷却至室温，完成渗铝硅涂层的制备；包括以下步骤：通过控制制备渗铝硅涂层的过程中的烧结温度T及烧结时间t完成对料浆法制备铝硅共渗涂层的渗层厚度控制，其中，渗铝硅涂层的厚度S的表达式为：S＝aT 3 +bT 2 +cT+dt+e*10 4 其中，a、b、c、d及e与基材材料相关的常数，该方法能够准备控制铝硅共渗涂层的渗层厚度。

Application process for protective coating involves preparing component, applying slick layer, drying it, and alitizing substrate surface for simultaneous diffusion

The application process involves preparing the component (10), which is made of a nickel-based alloy including aluminum, applying a slick layer of silicon to the prepared surface, drying the slick layer, and alitizing the substrate surface so that the applied silicon and the aluminum are diffused into the substrate surface simultaneously.

A kind of salt bath rare earth Cr-Ti coating agent and its technique for applying

本发明涉及了一种盐浴稀土铬钛共渗剂，其特征在于按质量百分比计，它包括由二氯化钡43‑49％，氯化钾20‑26％，二氧化钛8‑12％，三氧化二铬1‑3％，铝粉3‑5％，富铈稀土6‑8％，氟化钠6‑10％组成。本发明获得的覆层硬度极高，具有极低的摩擦系数，同时覆层截面硬度呈现梯度平缓变化，降低了覆层的应力集中，减小了脆裂倾向，提高了覆层抗冲击能力，大幅提高了冷作模具钢或机械零部件的使用寿命。

Melt for obtaining diffusion coatings on steel articles

ALUMINUM SILICIDE COATINGS, SURFACE COATING COMPOSITIONS, COATING METHODS AND IMPROVED COATED PRODUCTS

Long-term stable, storable slip for environmentally friendly diffusion coatings

Die vorliegende Anmeldung befasst sich mit der Herstellung und Anwendung langzeitstabiler, lagerfähiger Schlicker für umweltfreundliche Diffusionsbeschichtungen, wobei neben den für die Diffusionsbeschichtung verwendeten Metallen auch noch die entsprechenden Metalloxide in die Schlickerzusammensetzung eingearbeitet werden und eine gezielte Einstellung der Schlickerviskositäten zur Vermeidung einer Sedimentierung erfolgt. The present application is concerned with the production and use of long-term stable, storable slips for environmentally friendly diffusion coatings, wherein in addition to the metals used for the diffusion coating also the corresponding metal oxides are incorporated into the slip composition and a targeted adjustment of the slip viscosities to avoid sedimentation.

Component, anti-oxidation coating for such a component and method of producing the same

A component such as a gas turbine engine component has an oxidation protective layer formed as a substrate surface region in a substrate of the component. The substrate has a nickel-based composition including nickel and an aluminum proportion of greater than 4.5 weight %. The surface region is formed by diffusion of at least platinum into the substrate surface region to provide an integrated platinum proportion of 5 to 40 weight percent over the integration depth range in the surface region.

Process for diffusing titanium and nitride into a material having a coating thereon and products produced thereby

Patent JPS5636864B2

Exothermically formed aluminide coating

Pyrophorically activated aluminides of iron, nickel and cobalt, or mixtures thereof, are formed as discs or as coatings (14) on substrates (10) such as thin foils. The aluminide can be formed in situ by reacting aluminum powder with the aluminide-forming metal. Mixtures of these reactants can be applied by a method such as spraying (12) to a substrate (10) as such or suspended in a liquid like water or volatilizable organic liquids. Water is preferably used with a little binder such as an alkali metal silicate. An inhibitor is used to keep the water from reacting with finely-divided aluminum, and those silicates also perform such function. The pyrophoric products can be discharged to decoy heat-seeking missiles, or they can have their pyrophoricity destroyed to make catalysts. Pyrophoric action can be heightened by additives such as boron, and by post treatment with mild acid.

An electroless plating process

An electroless plating method for use in metal plating on a porous substrate is disclosed. It uses selective contact of the plating metal salt solution with a reducing solution on the activated surface on or inside the porous substrate. This electroless plating method in the setup is useful for unmanned, automatic operation resulting in almost 100 % membrane (pure / composite) with substantially no pinholes or cracks.

Treated coated article and process of treating a coated article

A process (100) of treating a coated article (101) and a treated article (107) are disclosed. The process includes providing an article (101) having a MCrAlY coating (105), applying an aluminide treatment (117) onto the MCrAlY coating (105) to form a treated MCrAlY coating (115), and outwardly forming β-phase material (109) from the MCrAlY coating (105) into the treatment. The applying is selected from the group consisting of soaking, spraying, brushing, dipping, pouring, pack cementation, vapor deposition, and combinations thereof. The treated article (107) includes a substrate (103) and a treated MCrAlY coating (115) positioned on at least a portion of the substrate (103). The treated MCrAlY coating (115) includes a β-phase aluminide (109) in a spray-applied, brush-applied, pour-applied, dip-applied, pack cementapplied, vapor deposit-applied, or soaking-applied treatment.

Method for producing a plating for a metal component

The invention relates to a method for producing a plating for a metal component, e.g. the tip of a turbine blade, that is applied to the surface of said component. The inventive method involves a simple manufacturing technique and can be carried out at low cost, comprising the following steps: a slurry is produced by mixing a powder containing at least one of the elements Ni, Cr or Ce with a binding agent; the slip is deposited on the surface which is to be plated; ceramic particles are added before and after the slip is deposited; the slip is dried at a temperature ranging from room temperature to 300 °C; and the slip coating is aluminized.

Patent DE3424026C2

Method for producing an inlet lining

The invention relates to a method for producing an inlet lining on a stator-side component of a turbomachine, particularly a gas turbine, with at least the following steps: a) providing a stator-side component of a turbomachine, this component being provided with an inlet lining; b) providing a mixture consisting of a solvent, of particles of a metallic parent material for the inlet lining, said particles being insoluble in the solvent, and consisting of a filler, this filler having at least one constituent that is soluble in the solvent; c) applying the mixture to the stator-side component; d) drying the stator-side component and the mixture applied to the component while at least partially expelling the solvent in order to prepare a porous green body; e) diffusion heat treating the component for inwardly diffusing aluminum and/or chromium and for forming intermetallic phases in the forming inlet lining.

Oxidation resistant coatings for niobium-based silicide composites

An environmentally resistant coating for improving the oxidation resistance of a niobium-based refractory metal intermetallic composite (Nb-based RMIC) at high temperatures, the environmentallly resistant coating comprising silicon, titanium, chromium, and niobium. The invention includes a turbine system having turbine components comprising at least one Nb-based RMIC, the environmentally resistant coating disposed on a surface of the Nb-based RMIC, and a thermal barrier coating disposed on an outer surface of the environmentally resistant coating. Methods of making a turbine component having the environmentally resistant coating and coating a Nb-based RMIC substrate with the environmentally resistant coating are also disclosed.

A kind of modified neodymium iron boron magnetic body and its manufacture method

本发明提供一种改性钕铁硼磁体，由钕铁硼磁体和改性剂制得；所述改性剂包括轻稀土、Al、Cu和Ga中的一种或几种。本发明采用轻稀土、Al、Cu和Ga中的一种或几种对钕铁硼磁体进行改性，改性剂被磁体吸收后有效提高了钕铁硼磁体的矫顽力，同时有效抑制了剩磁和磁能积的下降。另外，本发明中改性剂于现有的重稀土改性剂而言，原料来源丰富，成本低廉。实验结果表明，本申请中的改性钕铁硼磁体的矫顽力相对于现有技术最高提高50％，并且剩磁和磁能积基本没有下降。本发明还提供了一种改性钕铁硼磁体的制造方法。

Bearing pin surface vanadium niobium oozes reinforcement process altogether

本发明公开了销轴表面钒铌共渗强化工艺，（1）精磨销轴；（2）盐浴配方：5‑10%无水硼砂，45‑55%的粉状钒粉和40‑45%的铌粉以及一定量的还原剂，称取各组分并混合均匀；（3）加入精磨的销轴充分搅拌后装入密封罐内，并在1050‑1100℃环境中保温10‑12h，进行钒铌共渗；（4）经过钒铌共渗后的销轴随炉冷却；（5）冷却后的销轴用沸水煮去表层残余的废盐；（6）后续对销轴进行常规淬火与回火。具有以下优点：渗透速度快，钒铌共渗层的耐磨性、抗擦伤性能比渗铬层强，渗层更加均匀；钒铌共渗销轴的渗层相比渗铬的渗层要更加质密，渗层与基体之间结合强度更好，表面强度大大提高，提高了耐磨性能和剪切强度。

Durable refractory ceramic coating

An article used for thermal protection includes a base structure having at least one surface. The base structure is made of a ceramic oxide material. A silicide coating is formed on the at least one surface of the base structure. The coating comprises a refractory metal and silicon, which together form a silicide. The coating is at least partially diffused into the base structure at the at least one surface.

Hydrogen reactor

Compositions, methods, and reactors related to hydrogen production are generally described.