US3864093A - High-temperature, wear-resistant coating - Google Patents

High-temperature, wear-resistant coating Download PDF

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Publication number
US3864093A
US3864093A US307345A US30734572A US3864093A US 3864093 A US3864093 A US 3864093A US 307345 A US307345 A US 307345A US 30734572 A US30734572 A US 30734572A US 3864093 A US3864093 A US 3864093A
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US
United States
Prior art keywords
metal
base alloys
oxide
group
wear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US307345A
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English (en)
Inventor
Thomas A Wolfla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Praxair ST Technology Inc
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Union Carbide Corp
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Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Priority to US307345A priority Critical patent/US3864093A/en
Priority to CA183,291A priority patent/CA1000126A/en
Priority to DE2356617A priority patent/DE2356617C3/de
Priority to GB5325673A priority patent/GB1448256A/en
Priority to CH1611373A priority patent/CH587353A5/xx
Priority to FR7340984A priority patent/FR2207027B1/fr
Priority to JP12838073A priority patent/JPS5634632B2/ja
Application granted granted Critical
Publication of US3864093A publication Critical patent/US3864093A/en
Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: STP CORPORATION, A CORP. OF DE.,, UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,, UNION CARBIDE CORPORATION, A CORP.,, UNION CARBIDE EUROPE S.A., A SWISS CORP.
Assigned to UNION CARBIDE CORPORATION, reassignment UNION CARBIDE CORPORATION, RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MORGAN BANK (DELAWARE) AS COLLATERAL AGENT
Assigned to UNION CARBIDE COATINGS SERVICE TECHNOLOGY CORPORATION reassignment UNION CARBIDE COATINGS SERVICE TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE COATINGS SERVICE CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/926—Thickness of individual layer specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/12139—Nonmetal particles in particulate component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/1266—O, S, or organic compound in metal component
    • Y10T428/12667—Oxide of transition metal or Al
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12674—Ge- or Si-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/12743—Next to refractory [Group IVB, VB, or VIB] metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y10T428/12757—Fe

Definitions

  • This invention relates to a high-temperature, wearresistant coated article, and a process for producing it, wherein the coated layer comprises metal oxide particles dispersed in a metal alloy matrix, said allo'y matrix comprising essentially at least one first metal selected from the group consisting of iron, cobalt and nickel and at least one second metal selected from the group consisting of aluminum, silicon and chromium, with the aggregate of the first metal being at least 40% by weight and the aggregate of the second metal being between about and about 40% by weight.
  • coatings available for pro viding a metal alloy substrate with a surface having specific characteristics suitable for a particular end use application.
  • the coating' may be applied to increase the wear-resistant characteristics of the substrate, decrease the contact-friction characteristics of the substrate, electrically or thermally insulate the substrate, or protect it from oxidation or othercorrosive attack.
  • various types of coating materials can be ap plied on substrates by use of detonation guns, plasma are devices and the like, for improving the wear resistance of the substrates.
  • wearresistant coating materials can be used for hightemperature service, above 1000F, since the physical properties and/or coefficient of thermal expansion characteristics of most of the available coating materials are not compatible with the substrates used in hightemperature environments.
  • Complex metal alloys containing tungsten, chromium or the like, are currently being used as wear-resistant coating materials for the surfaces of superalloy turbine blades.
  • the composition of the coating is such that the coating will form carbide phases (WC, W C, CI'ggCs) during solidification. It is these hard refractory carbides that are primarily responsible for the wear resistance of the coated surfaces. However, at high temperatures in oxygen-containing environments, the hard refractory carbide surface is consumed by oxidation. Changing the alloy composition to increase corrosion resistance is not the solution since the change usually results in decreasing the wear resistance of the coating.
  • cermets Another class of wear-resistant materials that is presently used is known as cermets, and includes materials consisting of a high volume fraction (usually greater than 80%) of hard particles such as oxides, or carbides and a metallic binder. Even though the metallic binder may be relatively corrosion resistant, these materials are unsatisfactory because they lack impact and fatigue resistance. Thus a problem plaguing the industry today is combining oxidation resistance and wear resistance in a useful coating.
  • the present invention overcomes the above drawbacks and limitations by being directed to a coating for a substrate whereby said coating comprises a relatively low volume fraction of metal oxide particles uniformly dispersed in an oxidation-resistant metal alloy matrix.
  • this invention is directed to a hightemperature, wear-resistant coated article, and process for producing it, comprising a substrate with a coated layer, said layer composed of particles of at least one metal oxide substantially uniformly dispersed in a metal alloy matrix, said alloy matarix comprising essentially at least one first metal selected from the group consisting of iron, cobalt, and nickel, and at least one second metal selected from the group consisting of aluminum, silicon and chromium, and wherein the aggregate of the first metal is at least about 40% by weight of the alloy to provide sufficient strength and ductility and the aggregate of the second metal is between about 10% and about 40% by weight of the alloy to provide sufficient corrosion resistance.
  • the coating composition of this invention in a particulate form can be deposited on a suitable solid structural substrate by conventional plasma-spraying techniques as disclosed in U.S. Pat. Nos. 2,858,4ll and 3,016,447, or by Detonation Gun techniques as disclosed in U.S. Pats. Nos. 2,714,563, 2,950,867 and 2,964,420 or by flame spraying techniques as disclosed in U.S. Pat. No. 2,861,900.
  • the unique wear-resistant material so deposited will consist of a lamellar structure of interlocking and overlapping microscopic leaves me chanically bonded to each other and to said substrate without substantial alloying at the interface thereof, and be composed of metal oxide particles intentionally added to the oxidation-resistant metal matrix.
  • the metal oxide particles for use in this invention are selected from at least one of the group consisting of aluminum oxide, chromium oxide, beryllium oxide, titanium dioxide, silicon dioxide, thorium oxide, zirconium oxide, tantalum oxide, calcium oxide, magnesium oxide, hafnium oxide, yttrium oxide, the rare earth oxides and spinel combinations of the above such as MgO-Al O NiO-Al O and CoO'Al O
  • the size of the metal oxide particles can very between about 0.05 micron and about 74 microns, preferably between about 1 micron and 44 microns, and be present in a volume fraction of between about 2% and about 50%. preferably between about 5% and about 25%.
  • Particle sizes below 0.05 micron are too small to add useful wear resistance, while sizes greater than 74 microns cause excessive wear of the mating surface. Volume fractions less than 2% do not provide sufficient wear resistance, but if the fraction is greater than 50%, the material has insufficient ductility, impact resistance and resistance to thermal fatigue.
  • the particles, dispersed in the matrix as discrete components, must be stable in the intended high temperature operating atmosphere and substantially non-reactant with both the alloy of the matrix and the material of the substrate.
  • the metal alloy matrix of this invention comprises essentially at least one first metal selected from the group consisting of iron, cobalt and nickel, and at least one second metal selected from the group consisting of aluminum, silicon and chromium.
  • the aggregate of the first metal should be at least 40% by weight and the aggregate of the second metal should be between about 10% and about 40% by weight.
  • the balance of the metal alloy can be composed of one or more adventitious elements, and/or one or more elements or compounds added to impart mechanical strength and/or corrosion resistance at high temperatures; for example, tungsten, molybdenum, vanadium, manganese, carbon, rhenium, yttrium, lanthanum, boron, niobium, titanium, tantalum, zirconium and the like.
  • the metal alloy should be of the particulate form and sized 200 Tyler mesh and finer so that it can be mixed with the metal oxide particles prior to deposition on a suitable substrate.
  • the metal oxide particles and the components alloy powder; said alloy comprising essentially at least one first metal selected from the group consisting of iron, cobalt and nickel, and at least one second metal selected from the group consisting of aluminum, silicon of the metal alloy matrix material should be selected so and chromium, the aggregate of said first metal being that the metal oxide particles will not effectively react at least about 40% by weight and the aggregate of said with the alloy and thereby remain substantially dissecond metal being between about and about 40% persed in the alloy matrix as discrete stable particles.
  • the final wear-resistant coating should have a tween about 0.05 micron and 74 microns and present Vickers Hardness Number (VHN) of greater than 500 10 in a volume fraction of between about 2% and about as determined in accordance with ASTM Test Method 50%; and wherein said alloy powder being sized about E92-67 using a 300 gram test load.
  • VHN Vickers Hardness Number
  • Examples of admi- 200 Tyler mesh and finer; and rably suited alloys for the matrix Of this invention are I depositing said mixture of particles and powders Show" in Table onto a substrate by a technique selected from the group
  • Some examples of substrate materials used in various i ti of detonation gun means, plasma spraying corrosive environments and admirably suited as submeans d fl Spraying means so as to dh i l strates for the coating Of this invention include, but are coat Said substrate a high-temperature wearnot limited Steel, Stainless Steel, iron base alloys resistant coating having a surface hardness of at least nickel, nickel base alloys, cobalt, cobalt base alloys, about 500 VHN chromium, chromium base alloys, refractory metals, EXAMPLE and refractory-metal base alloys.
  • the specific coating composition selected for a substrate intended for a par- A base alloy F havmg the composltlon ticular end use environment should be selected so that shownm m n slzed Tyler mesh and finer it will adhere to the substrate without substantially was mfxed 3o'mlcron and Smaller Chromfum spalling or peeling while neither the metal oxide parti- Oxide Varlous Volume fractlons and deposlted cles nor the metal alloy matrix therein will effectively JT3D turbine blades using a detonation gun under react with the substrate in its intended environment.
  • the metal particles mium oxide mixture until a 0.008 to 0.010 inch thick should be stable in the alloy matrix and the overall layer was established.
  • the coated blades were then high-temperature,wear-resistant coating should be statested in an engine simulator wear-test device that ble on the substrate in its intended end-use environcauses thermal stress and impact and sliding wear damment. Usually a coating of about 0.003 inch or thicker age similar to an actual engine by rubbing two blade Z- would be suitable for most applications. notch sections against each other.
  • the temperature in As used herein, metal base alloy shall mean alloys the simulator during the test was recorded at ]650F wherein (899C).
  • the base metal is present in the largest proportion by faces of two blades, a wear scar was embedded in the weight.
  • High temperature shall mean l00OF or higher. coated test surfaces.
  • the depth of the wear scars in the Therefore substrates to be coated according to this invarious coating compositions tested is shown in Table vention should be such that they substantially maintain Ill.
  • the additheir integrity at high temperatures. tion of metal oxide particles, in various volume frac- The process of this invention entails the following tions, to the coating will substantially increase the wear steps: resistance of the coating without degrading its good oxa. preparing a mixture of at least one metal oxide seidation resistance.
  • the surface hardness of said Ma new 1 coated layer bein at least 500 VHN as determined 2 g using a 300 gram test load and the coated layer having aggregate of Gm metal in chains 48.65% a microstructure consisting of a thin lamel lar structure "aggregate of second metal in coating 29 a 10 of interlocking and overlapping microscopic leaves me- TABLE III Duration Material Depth of Wear of Test LlOl alloy 1 X 10' inch l2 hours LlOl alloy 6 v/o cl'gog less than l X 10 inch l2 hours LlOl alloy 4 W0 C503 4 X 10 inch 12 hours LlOl alloy 2 v/o C1203 2 X l0" inch 12 hours thorium oxide, zirconium oxide, tantalum oxide, siliconoxide, magnesium oxide, hafnium oxide, yt
  • coated article of claim 1 wherein said substrate is selected from the group consisting of steel, stainless steel, iron base alloys, cobalt, cobalt base alloys, nickel, nickel base alloys, chromium, chromium base alloys, refractory metals and refractory-metal base alloys.
  • metal oxide particles are selected from a group consisting of aluminum oxide, stabilized zirconium oxide and chromium oxide; said metal alloy is selected from a group consisting of nickel base alloys, iron base alloys and cobalt base alloys, and said substrate is selected from a group consisting of nickel base alloys, cobalt base alloys and iron base alloys.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
US307345A 1972-11-17 1972-11-17 High-temperature, wear-resistant coating Expired - Lifetime US3864093A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US307345A US3864093A (en) 1972-11-17 1972-11-17 High-temperature, wear-resistant coating
CA183,291A CA1000126A (en) 1972-11-17 1973-10-12 High-temperature, wear-resistant coating and a process for making it
DE2356617A DE2356617C3 (de) 1972-11-17 1973-11-13 Verfahren zum Aufbringen eines gegenüber hohen Temperaturen und Abrieb beständigen Überzugs auf Metallgegenständen
CH1611373A CH587353A5 (de) 1972-11-17 1973-11-16
GB5325673A GB1448256A (en) 1972-11-17 1973-11-16 High-temperature wear resistant coating and a process for making it
FR7340984A FR2207027B1 (de) 1972-11-17 1973-11-16
JP12838073A JPS5634632B2 (de) 1972-11-17 1973-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US307345A US3864093A (en) 1972-11-17 1972-11-17 High-temperature, wear-resistant coating

Publications (1)

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US3864093A true US3864093A (en) 1975-02-04

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US307345A Expired - Lifetime US3864093A (en) 1972-11-17 1972-11-17 High-temperature, wear-resistant coating

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US (1) US3864093A (de)
JP (1) JPS5634632B2 (de)
CA (1) CA1000126A (de)
CH (1) CH587353A5 (de)
DE (1) DE2356617C3 (de)
FR (1) FR2207027B1 (de)
GB (1) GB1448256A (de)

Cited By (46)

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US4101713A (en) * 1977-01-14 1978-07-18 General Electric Company Flame spray oxidation and corrosion resistant superalloys
US4124737A (en) * 1976-12-30 1978-11-07 Union Carbide Corporation High temperature wear resistant coating composition
US4217151A (en) * 1978-01-27 1980-08-12 Victor Company Of Japan, Limited Cermet type magnetic material
US4404263A (en) * 1978-12-13 1983-09-13 Glyco-Metall-Werke Daelen & Loos Gmbh Laminated bearing material and process for making the same
US4446199A (en) * 1982-07-30 1984-05-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Overlay metallic-cermet alloy coating systems
US4451496A (en) * 1982-07-30 1984-05-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Coating with overlay metallic-cermet alloy systems
US4578114A (en) * 1984-04-05 1986-03-25 Metco Inc. Aluminum and yttrium oxide coated thermal spray powder
US4639399A (en) * 1985-11-26 1987-01-27 The United States Of America As Represented By The Secretary Of The Navy Nickel oxide, ceramic insulated, high temperature coating
US4740428A (en) * 1985-04-24 1988-04-26 Honda Giken Kogyo Kabushiki Kaisha Fiber-reinforced metallic member
US4822689A (en) * 1985-10-18 1989-04-18 Union Carbide Corporation High volume fraction refractory oxide, thermal shock resistant coatings
US5120350A (en) * 1990-07-03 1992-06-09 The Standard Oil Company Fused yttria reinforced metal matrix composites and method
US5277936A (en) * 1987-11-19 1994-01-11 United Technologies Corporation Oxide containing MCrAlY-type overlay coatings
US5436047A (en) * 1991-09-24 1995-07-25 International Business Machines Corporation Thin film magnetic recording disk comprising a metallic disk blank, a substantially non-magnetic Ni-Cr-O film having a textured surface and a magnetic film
US5612090A (en) * 1992-11-20 1997-03-18 Nisshin Steel Co., Ltd. Iron-based material having excellent oxidation resistance at elevated temperatures and process for the production thereof
US5670213A (en) * 1995-03-14 1997-09-23 Hilite Industries, Inc. Process for increasing torque generated by a clutch
US5712050A (en) * 1991-09-09 1998-01-27 General Electric Company Superalloy component with dispersion-containing protective coating
US5721061A (en) * 1996-11-15 1998-02-24 General Electric Company Oxidation-resistant coating for niobium-base alloys
US5795659A (en) * 1992-09-05 1998-08-18 International Inc. Aluminide-silicide coatings coated products
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US5942333A (en) * 1995-03-27 1999-08-24 Texas Research Institute Non-conductive coatings for underwater connector backshells
US6302318B1 (en) * 1999-06-29 2001-10-16 General Electric Company Method of providing wear-resistant coatings, and related articles
US6436202B1 (en) 2000-09-12 2002-08-20 Nova Chemicals (International) S.A. Process of treating a stainless steel matrix
EP1239055A2 (de) * 2001-03-08 2002-09-11 Shin-Etsu Chemical Co., Ltd. Sphärische Teilchen zum thermischen Spritzen sowie bespritzte Bauteile
US6670049B1 (en) * 1995-05-05 2003-12-30 General Electric Company Metal/ceramic composite protective coating and its application
US6824883B1 (en) 2000-09-12 2004-11-30 Nova Chemicals (International) S.A. Surface on a stainless steel matrix
US20050013993A1 (en) * 2003-07-16 2005-01-20 Honeywell International Inc. Environmental & thermal barrier coating
EP1618224A1 (de) * 2003-04-28 2006-01-25 Coppe/Ufrj - Coordenacao Dos Programas De Pos Graduacao De Engenharia Da Universidade Federal Do Rio De Janeiro Verwendung von thermischem spritzen mit nioboxiden und nioblegierungen während der herstellung von gewalzten stahlblechen
US20060137486A1 (en) * 2003-05-20 2006-06-29 Bangaru Narasimha-Rao V Advanced erosion resistant oxide cermets
US20060254418A1 (en) * 2005-04-07 2006-11-16 Sulzer Metco Ag Material and process for thermal coating, surface layer and also compressor with a surface layer of the material
US20060261311A1 (en) * 2003-07-15 2006-11-23 Dacral Use of yttrium, zirconium, lanthanum, cerium, praseodymium and/or neodymium as reinforcing agent for an anticorrosion coating composition
JP2007505210A (ja) * 2003-06-24 2007-03-08 ノバ ケミカルズ（インターナショナル）ソシエテ アノニム 鋼基板上の複合材料表面
US20070116973A1 (en) * 2005-11-21 2007-05-24 Pareek Vinod K Process for coating articles and articles made therefrom
US20070116884A1 (en) * 2005-11-21 2007-05-24 Pareek Vinod K Process for coating articles and articles made therefrom
US20070131054A1 (en) * 2003-05-20 2007-06-14 Bangaru Narasimha-Rao V Multi-scale cermets for high temperature erosion-corrosion service
US20080245445A1 (en) * 2007-04-04 2008-10-09 David Andrew Helmick Process for forming a chromium diffusion portion and articles made therefrom
US20090214888A1 (en) * 2003-08-18 2009-08-27 Upchurch Charles J Method and apparatus for producing alloyed iron article
US7635515B1 (en) * 2004-04-08 2009-12-22 Powdermet, Inc Heterogeneous composite bodies with isolated lenticular shaped cermet regions
US20100172789A1 (en) * 2009-01-08 2010-07-08 General Electric Company Method of coating with cryo-milled nano-grained particles
WO2013056289A1 (de) 2011-10-20 2013-04-25 Isiqiri Interface Technolgies Gmbh ECHTZEITMESSUNG VON RELATIVEN POSITIONSDATEN UND/ODER VON GEOMETRISCHEN MAßEN EINES BEWEGTEN KÖRPERS UNTER VERWENDUNG OPTISCHER MESSMITTEL
US8544769B2 (en) 2011-07-26 2013-10-01 General Electric Company Multi-nozzle spray gun
US8697250B1 (en) 2013-02-14 2014-04-15 Praxair S.T. Technology, Inc. Selective oxidation of a modified MCrAlY composition loaded with high levels of ceramic acting as a barrier to specific oxide formations
US9581030B2 (en) 2011-01-21 2017-02-28 Lockheed Martin Corporation Ultra high temperature environmental protection coating
EP2574545A3 (de) * 2011-09-30 2017-10-11 Rolls-Royce plc Verschleißfeste Beschichtung und Verwendung davon
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GB1448256A (en) 1976-09-02
JPS5634632B2 (de) 1981-08-11
DE2356617B2 (de) 1977-04-21
DE2356617A1 (de) 1974-05-22
JPS4981236A (de) 1974-08-06
DE2356617C3 (de) 1985-01-24
CH587353A5 (de) 1977-04-29
FR2207027B1 (de) 1976-05-07
CA1000126A (en) 1976-11-23
FR2207027A1 (de) 1974-06-14

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