EP0114232A1 - Flame spray powder for producing wear-resistant coatings - Google Patents
Flame spray powder for producing wear-resistant coatings Download PDFInfo
- Publication number
- EP0114232A1 EP0114232A1 EP83111466A EP83111466A EP0114232A1 EP 0114232 A1 EP0114232 A1 EP 0114232A1 EP 83111466 A EP83111466 A EP 83111466A EP 83111466 A EP83111466 A EP 83111466A EP 0114232 A1 EP0114232 A1 EP 0114232A1
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- EP
- European Patent Office
- Prior art keywords
- wettable powder
- weight
- percent
- molybdenum
- layers
- 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.)
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Classifications
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- 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
Definitions
- the invention relates to a wettable powder for the production of wear-resistant coatings on the running and friction surfaces of sliding friction exposed machine parts, such as in particular piston rings in high-speed diesel engines, the friction surfaces of synchronizer rings, or the top land of piston heads of the pistons in internal combustion engines, preferably by a plasma spraying process.
- the running surfaces of sliding machine parts exposed to sliding friction are primarily provided with galvanic hard chrome layers or with thermally sprayed protective coatings made of preferably metals or metal alloys.
- Molybdenum in particular, has proven to be an excellent spray material for coating the running surfaces of piston rings for internal combustion engines. The molybdenum is either applied over the entire surface and one speaks of coatings in overmolded form, or grooves and recesses are worked into the treads, which are then filled with the spray material, and then one speaks of coatings in one or both sides chambered form.
- molybdenum spray layers have excellent fire resistance, while their fail-resistant properties which is inferior to galvanic hard chrome layers.
- molybdenum sprayed layers are relatively brittle, so that there is a risk of layer breakouts, especially in the case of extreme loads, both with chambered and with overmolded rings.
- the wettable powders of DE-AS 2 433 814 consist of molybdenum with 0.5 to 45 Z iron, cobalt, nickel, titanium, vanadium, chromium, aluminum, tungsten, tantalum, rhenium and / or zirconium and 0.8 to 10 % Silicon and according to DE-OS 2 841 552 3 to 40 X aluminum alloy are mixed with the molybdenum.
- Both wettable powders may additionally contain hard materials based on carbides, nitrides, oxides and / or intermetallic compounds.
- the present invention is therefore based on the object of finding wettable powder compositions from which wear-resistant coatings, in particular on the running surfaces, of machine parts which are exposed to rubbing stress are used by thermal spraying processes Overmolded and can be produced in one or both sides chambered form, which at the same time have a reduced brittleness and thus an improved security against breakouts, without the fire trace safety is significantly reduced.
- the wettable powders are said to be particularly suitable for coating piston rings in high-speed diesel engines.
- a wettable powder which consists of a mixture of 20 to 60 parts by weight of molybdenum, 20 to 50 parts by weight of a molybdenum carbide and optionally up to 30 parts by weight of a low-melting alloy, preferably based on a chromium alloy, a chromium-nickel alloy and / or an aluminum alloy consists.
- the preferred molybdenum carbide is a carbide with the composition MoC 2 and the preferred low-melting alloys are nickel-chromium alloys with 75-85% nickel and 15-25% chromium or aluminum alloys with 10-20% silicon and 80-90X aluminum.
- the wettable powder can be used in the form of mixtures of the two or three components, but it is preferred to use micropellets or composite powder composed of two or possibly all of the components, and the powders are preferably applied by a plasma spraying process.
- the wettable powders according to the invention are also to be used preferably for coating piston rings, they can also be used for similar applications in the sense of the invention. It was found that the powder is also suitable for coating the top land and piston crowns of the pistons in internal combustion engines, and the friction surfaces of synchronizer rings were also coated with the powders according to the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Powder Metallurgy (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Ein Spritzpulver für die Herstellung verschleißfester Beschichtungen auf den Lauf- und Reibungsflächen gleitender Reibung ausgesetzter Maschinenteile, wie insbesondere den Laufflächen von Kolbenringen in schnellaufenden Dieselmotoren, den Reibungsflächen von Synchronringen oder den Feuerstegbereichen und Kolbenböden von Kolben in Verbrennungskraftmaschinen durch bevorzugt ein Plasmaspritzverfahten besteht aus 20 bis 60 Gewichtsprozent Molybdän, 25 bis 50 Gewichtsprozent Molvbdänkarbid und bis zu 30 Gewichtsprozent einer niedrigschmelzenden Legierung aus vorzugsweise einer Chromlegierung, einer Nickelchromlegierung und/oder einer Aluminiumlegierung. Die so hergestellten Schichten besitzen gegenüber reinen Molybdänschichten eine verbesserte Veschleißfestigkeit und eine verbesserte Ausbruchsicherheit, so daß vor allem Kolbenringe schon mit derartigen Überzügen in tiberspritzter Form ohne die bisher übliche Abwinkelung der Kanten eingesetzt werden können, ohne daß die Brandspursicherheit der Schichten gegenüber reinen Molybdänschichten herabgesetzt ist.A wettable powder for the production of wear-resistant coatings on the running and friction surfaces of sliding mechanical parts exposed to friction, such as in particular the running surfaces of piston rings in high-speed diesel engines, the friction surfaces of synchronizer rings or the top land areas and piston crowns of pistons in internal combustion engines, preferably by means of a plasma spraying process, consists of 20 to 60 Weight percent molybdenum, 25 to 50 weight percent molvbdenum carbide and up to 30 weight percent of a low-melting alloy, preferably of a chromium alloy, a nickel-chromium alloy and / or an aluminum alloy. The layers produced in this way have an improved wear resistance and improved break-out resistance compared to pure molybdenum layers, so that piston rings, in particular, can be used with such coatings in overmolded form without the previously customary bending of the edges, without the fire resistance of the layers being reduced compared to pure molybdenum layers .
Description
Die Erfindung betrifft ein Spritzpulver für die Herstellung von verschleißfesten Beschichtungen auf den Laufund Reibungsflächen gleitender Reibung ausgesetzter Maschinenteile, wie insbesondere von Kolbenringen in schnellaufenden Dieselmotoren, den Reibflächen von Synchronringen, oder den Feuerstegen von Kolbenböden der Kolben in Verbrennungskraftmaschinen durch vorzugsweise ein Plasmaspritzverfahren.The invention relates to a wettable powder for the production of wear-resistant coatings on the running and friction surfaces of sliding friction exposed machine parts, such as in particular piston rings in high-speed diesel engines, the friction surfaces of synchronizer rings, or the top land of piston heads of the pistons in internal combustion engines, preferably by a plasma spraying process.
Zur Erhöhung der Verschleißfestigkeit werden in der Praxis die Laufflächen gleitender Reibung ausgesetzter Maschinenteile vor allem mit galvanischen Hartchromschichten oder mit thermisch aufgespritzen Schutzüberzügen aus vorzugsweise Metallen oder Metallegieruagen versehen. Zur Beschichtung vor allem der Laufflächen von Kolbenringen für Verbrennungskraftmaschinen hat sich als Spritzwerkstoff vor allem Molybdän hevorragend bewährt. Das Molybdän wird dabei entweder ganzflächig aufgetragen und man spricht von überzügen in überspritzter Form, oder es werden Nuten und Ausnehmungen in die Laufflächen eingearbeitet, die dann mit dem Spritzwerkstoff ausgefüllt werden, und man spricht dann von Beschichtungen in einoder beidseitig gekammerter Form.In practice, to increase the wear resistance, the running surfaces of sliding machine parts exposed to sliding friction are primarily provided with galvanic hard chrome layers or with thermally sprayed protective coatings made of preferably metals or metal alloys. Molybdenum, in particular, has proven to be an excellent spray material for coating the running surfaces of piston rings for internal combustion engines. The molybdenum is either applied over the entire surface and one speaks of coatings in overmolded form, or grooves and recesses are worked into the treads, which are then filled with the spray material, and then one speaks of coatings in one or both sides chambered form.
Molybdänspritzsehichten besitzen vor allem eine hervorragende Brandspurfestigkeit, während ihre Versehleißfestigkeit der von galvanischen Hartchromschichten unterlegen ist. Zusätzlich sind Molybdänspritzschichten relativ spröde, so daß vor allem bei extremen Belastungen die Gefahr von Schichtausbrüchen sowohl bei gekammerten als auch bei überspritzten Ringen besteht.Above all, molybdenum spray layers have excellent fire resistance, while their fail-resistant properties which is inferior to galvanic hard chrome layers. In addition, molybdenum sprayed layers are relatively brittle, so that there is a risk of layer breakouts, especially in the case of extreme loads, both with chambered and with overmolded rings.
Deshalb hat man vor allem zur Verbesserung der Verschleißfestigkeit derartiger Schichten versucht, dem Molybdän andere Elemente zuzulegieren oder zuzumischen und man hat zusätzlich Hartstoffe den Spritzpulvern hinzugefügt. So bestehen beispielsweise die Spritzpulver der DE-AS 2 433 814 aus Molybdän mit 0,5 bis 45 Z Eisen, Kobalt, Nickel, Titan, Vanadium, Chrom, Aluminium, Wolfram, Tantal, Rhenium und/oder Zirkonium sowie 0,8 bis 10 % Silizium und nach der DE-OS 2 841 552 sind dem Molybdän 3 bis 40 X Aluminiumlegierung zugemischt. Beide Spritzpulver können zusätzlich gegebenenfalls Hartstoffe auf der Basis von Karbiden, Nitriden, Oxiden und/oder intermetallischen Verbindungen enthalten. Diese Maßnahmen erbrachten vor allem eine Verbesserung der Verschleißfestigkeit der Spritzschichten, mit Verbesserung der Verschleißfestigkeit büßten derartige Schichten einen Teil ihrer Brandspurfestigkeit ein oder die Schichten wurden spröder, so daß es bei extremen Belastungen sogar vermehrt zu Schichtausbrüchen kam.For this reason, attempts have been made, above all to improve the wear resistance of such layers, to alloy or add other elements to the molybdenum, and hard materials have also been added to the wettable powders. For example, the wettable powders of DE-AS 2 433 814 consist of molybdenum with 0.5 to 45 Z iron, cobalt, nickel, titanium, vanadium, chromium, aluminum, tungsten, tantalum, rhenium and / or zirconium and 0.8 to 10 % Silicon and according to DE-OS 2 841 552 3 to 40 X aluminum alloy are mixed with the molybdenum. Both wettable powders may additionally contain hard materials based on carbides, nitrides, oxides and / or intermetallic compounds. These measures primarily brought about an improvement in the wear resistance of the sprayed layers, with an improvement in the wear resistance, such layers lost part of their fire resistance or the layers became more brittle, so that there was even an increase in layer breakouts under extreme loads.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, Spritzpulverzusammensetzungen zu finden, aus denen sich durch thermische Spritzverfahren verschleißfeste Beschichtungen auf insbesondere den Laufflächen von reibender Beanspruchung ausgesetzten Maschinenteilen in Uberspritzter und in ein- oder beidseitig.gekammerter Form herstellen lassen, die zugleich eine verringerte Sprödigkeit und damit eine verbesserte Ausbruchsicherheit aufweisen, ohne daß die Brandspursicherheit wesentlich herabgesetzt ist. Die Spritzpulver sollen sich insbesondere zur Beschichtung von Kolbenringen in schnellaufenden Dieselmotoren eignen.The present invention is therefore based on the object of finding wettable powder compositions from which wear-resistant coatings, in particular on the running surfaces, of machine parts which are exposed to rubbing stress are used by thermal spraying processes Overmolded and can be produced in one or both sides chambered form, which at the same time have a reduced brittleness and thus an improved security against breakouts, without the fire trace safety is significantly reduced. The wettable powders are said to be particularly suitable for coating piston rings in high-speed diesel engines.
Erfindungsgemäß wird diese Aufgabe durch ein Spritzpulver gelöst, welches aus einer Mischung von 20 bis 60 Gewichtsteilen Molybdän, 20 bis 50 Gewichtsteilen eines Molybdänkarbides und gegebenenfalls bis zu 30 Gewichtsteilen einer niedrig schmelzenden Legierung vorzugsweise auf der Basis einer Chromlegierung, einer Chromnickellegierung und/oder einer Aluminiumlegierung besteht.According to the invention, this object is achieved by a wettable powder which consists of a mixture of 20 to 60 parts by weight of molybdenum, 20 to 50 parts by weight of a molybdenum carbide and optionally up to 30 parts by weight of a low-melting alloy, preferably based on a chromium alloy, a chromium-nickel alloy and / or an aluminum alloy consists.
Das bevorzugt verwendete Molybdänkarbid ist ein Karbid der Zusammensetzung MoC2 und die bevorzugt eingesetzten niedrig schmelzenden Legierungen sind Nickelchromlegierungen mit 75 - 85 X Nickel und 15 - 25 % Chrom oder Aluminiumlegierungen mit 10 - 20 % Silizium und 80 - 90 X Aluminium.The preferred molybdenum carbide is a carbide with the composition MoC 2 and the preferred low-melting alloys are nickel-chromium alloys with 75-85% nickel and 15-25% chromium or aluminum alloys with 10-20% silicon and 80-90X aluminum.
Das Spritzpulver kann in der Form von Mischungen der zwei beziehungsweise drei Komponenten verwendet werden, bevorzugt werden aber Mikropellets oder Verbundpulver aus zwei oder auch gegebenenfalls allen Komponenten eingesetzt, und die Pulver werden bevorzugt durch ein Plasmaspritzverfahren aufgetragen.The wettable powder can be used in the form of mixtures of the two or three components, but it is preferred to use micropellets or composite powder composed of two or possibly all of the components, and the powders are preferably applied by a plasma spraying process.
Bei mit den erfindungsgemäßen Spritzpulvern beschichteten Ringen in sowohl überspritzter als auch in ein- oder beidseitig gekammerter Form wurde in Motortestläufen gefunden, daß bei einem Molybdängehalt im Pulver von weniger als 20 Gewichtsprozent der Verschleiß an der Lauffläche des Gegenpartners der Zylinderlaufbüchse zu groß wird, bei Gehalten von mehr als 60 Gewichtsprozent ist dagegen die Verschleißfestigkeit der Spritzschicht nicht ausreichend. Umgekehrt ist entsprechend bei einem Molybdänkarbidanteil von unter 25 Gewichtsprozent die Eigenverschleißfestigkeit der Schichten zu gering, während größere Holybdänkarbidanteile von über 50 Gewichtsprozent den Verschleiß der Reibpartner unzulässig heraufsetzt.With rings coated with the wettable powders according to the invention in both overmolded and chambered form on one or both sides, it was found in engine test runs that with a molybdenum content in the powder of less than 20 percent by weight, the wear on the running surface of the counterpart of the cylinder liner becomes too great, at levels on the other hand, the wear resistance of the spray coating is not sufficient by more than 60 percent by weight. Conversely, with a molybdenum carbide content of less than 25 percent by weight, the inherent wear resistance of the layers is too low, while larger Holybdenum carbide contents of over 50 percent by weight inadmissibly increase the wear of the friction partners.
Überraschenderweise wurde aber auch gefunden, daß Schichten aus Molybdän mit Holybdänkarbid innerhalb der angegebenen Mengenverhältnisse keinerlei Einfluß auf die Brandspurfestigkeit der Schichten besitzen. Die Schichten aus Molybdän mit Molybdänkarbid waren ähnlich brandspursicher wie reine Molybdänschichten.Surprisingly, it was also found that layers of molybdenum with Holybdenum carbide have no influence on the fire resistance of the layers within the stated proportions. The layers of molybdenum with molybdenum carbide were similarly fire-proof as pure molybdenum layers.
Die Zugabe der niedrigschmelzenden Legierungen auf der Basis von Chromlegierungen, Chromnickellegierungen und/oder Aluminiumlegierungen erhöhen die Zähigkeit der Schichten, so daß die so hergestellten Kolbenringe höhere Schichtausbruchssicherheit aufweisen. So konnten in Versuchen die Laufflächen von Kolbenringen mit derartigen Pulverbeschichtungen in überspritzter Form mit nahezu scharfen Kanten, d.h. deren Kanten nicht wie bisher üblich abgewinkelt waren, sondern deren Kanten fast rechtwinklig zur Lauffläche verliefen, hergestellt werden. Derartige Ringe zeigten in den Motortestläufen im allgemeinen keinerlei Schichtbeschädigungen im Kantenbereich.The addition of the low-melting alloys based on chromium alloys, chromium-nickel alloys and / or aluminum alloys increases the toughness of the layers, so that the piston rings produced in this way have a higher layer breakout security. In trials, the running surfaces of piston rings with such powder coatings could be overmolded with almost sharp edges, ie their edges could not be as usual were angled, but whose edges were almost perpendicular to the tread. Such rings generally showed no damage to the layer in the edge area in the engine test runs.
Wenn auch die erfindungsgemäßen Spritzpulver bevorzugt zur Beschichtung von Kolbenringen eingesetzt werden sollen, so können sie jedoch auch im Sinne der Erfindung für ähnliche Anwendungsfälle eingesetzt werden. Gefunden wurde, daß das Pulver sich auch zur Beschichtung von Feuerstegen und Kolbenböden der Kolben in Verbrennungskraftmaschinen eignet und ebenso wurden die Reibflächen von Synchronringen mit den erfindungsgemäßen Pulveren beschichtet.If the wettable powders according to the invention are also to be used preferably for coating piston rings, they can also be used for similar applications in the sense of the invention. It was found that the powder is also suitable for coating the top land and piston crowns of the pistons in internal combustion engines, and the friction surfaces of synchronizer rings were also coated with the powders according to the invention.
Die folgenden Spritzpulverzusammensetzungen erwiesen sich zur Herstellung von Beschichtungen in Plasmaspritzverfahren als besonders vorteilhaft:The following wettable powder compositions have proven to be particularly advantageous for the production of coatings by plasma spraying:
- 45 Gewichtsprozent Molybdän45 percent by weight molybdenum
- 45 Gewichtsprozent Holybdänkarbid45% by weight of holydbane carbide
- 10 Gewichtsprozent Aluminiumlegierung mit10 weight percent aluminum alloy with
- 12 Gewichtsprozent Silizium12 weight percent silicon
- 40 Gewichtsprozent Molybdän40 percent by weight molybdenum
- 40 Gewichtsprozent Molybdänkarbid40 percent by weight molybdenum carbide
- 20 Gewichtsprozent Nickelchromlegierung mit20 weight percent nickel chrome alloy with
- 20 Gewichtsprozent Chrom und20 weight percent chromium and
- 80 Gewichtsprozent Nickel80 weight percent nickel
- 50 Gewichtsprozent Molybdän50 percent by weight molybdenum
- 25 Gewichtsprozent Molybdänkarbid25 percent by weight molybdenum carbide
- 25 Gewichtsprozent einer Chromlegierung25 percent by weight of a chrome alloy
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3247054 | 1982-12-20 | ||
| DE3247054A DE3247054C1 (en) | 1982-12-20 | 1982-12-20 | Spray powder for the production of wear-resistant coatings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0114232A1 true EP0114232A1 (en) | 1984-08-01 |
| EP0114232B1 EP0114232B1 (en) | 1987-06-03 |
Family
ID=6181144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83111466A Expired EP0114232B1 (en) | 1982-12-20 | 1983-11-17 | Flame spray powder for producing wear-resistant coatings |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4597939A (en) |
| EP (1) | EP0114232B1 (en) |
| JP (1) | JPS59133361A (en) |
| DE (2) | DE3247054C1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123952A2 (en) * | 1983-04-29 | 1984-11-07 | Goetze Ag | Wear-resistant coating |
| EP0170763A1 (en) * | 1984-06-09 | 1986-02-12 | Goetze Ag | Wear-resistant coating |
| EP0379699A1 (en) * | 1989-01-26 | 1990-08-01 | Asea Brown Boveri Ag | Method for enhancing the corrosion and erosion resistance of the blade of a rotary thermal apparatus and blade produced ba said method |
| EP0769568A1 (en) * | 1995-10-03 | 1997-04-23 | Osram Sylvania Inc. | Advanced Mo-based composite powders for thermal spray applications |
| US9919358B2 (en) | 2013-10-02 | 2018-03-20 | H.C. Starck Gmbh | Sintered molybdenum carbide-based spray powder |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515107C1 (en) * | 1985-04-26 | 1986-07-31 | Goetze Ag, 5093 Burscheid | Spray powder for the production of wear-resistant and escape-proof coatings |
| US5690716A (en) | 1994-09-09 | 1997-11-25 | Osram Sylvania Inc. | Thermal spray powder |
| DE19837945A1 (en) | 1998-08-21 | 2000-02-24 | Asea Brown Boveri | Circuit arrangement and method for its manufacture |
| JP2003501488A (en) * | 1999-06-11 | 2003-01-14 | ネオルックス コーポレイション | High-dose radionuclide complexes for bone marrow suppression |
| US7645315B2 (en) * | 2003-01-13 | 2010-01-12 | Worldwide Strategy Holdings Limited | High-performance hardmetal materials |
| JP4289926B2 (en) | 2003-05-26 | 2009-07-01 | 株式会社小松製作所 | Sliding material, sliding member, sliding component, and apparatus to which the sliding material is applied |
| DE10361166A1 (en) * | 2003-12-22 | 2005-07-28 | Meisel, Jörg, Dr. | Component for a prosthesis, especially a cervica vertebra, comprises two base parts coupled together by a hinge |
| JP4059246B2 (en) * | 2004-12-10 | 2008-03-12 | 日産自動車株式会社 | Roughening method and cutting tool |
| US8906130B2 (en) | 2010-04-19 | 2014-12-09 | Praxair S.T. Technology, Inc. | Coatings and powders, methods of making same, and uses thereof |
| DE102015213896A1 (en) * | 2015-07-23 | 2017-01-26 | Volkswagen Aktiengesellschaft | Process for coating a metallic tool and component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3313633A (en) * | 1963-07-24 | 1967-04-11 | Metco Inc | High temperature flame spray powder |
| GB1099957A (en) * | 1964-09-29 | 1968-01-17 | Metco Inc | Composite carbide flame spray wire or powder |
| DE2433814A1 (en) * | 1974-07-13 | 1976-01-22 | Goetzewerke | Wear resistant coating prodn - of molybdenum alloy produced by plasma spraying |
| EP0009210A2 (en) * | 1978-09-23 | 1980-04-02 | Goetze Ag | Spray powder for producing wear-resistant coatings on surfaces of piston rings or linear seals |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3713788A (en) * | 1970-10-21 | 1973-01-30 | Chromalloy American Corp | Powder metallurgy sintered corrosion and heat-resistant, age hardenable nickel-chromium refractory carbide alloy |
| US4066451A (en) * | 1976-02-17 | 1978-01-03 | Erwin Rudy | Carbide compositions for wear-resistant facings and method of fabrication |
| JPS5839759A (en) * | 1981-09-02 | 1983-03-08 | Hitachi Metals Ltd | Composite material for metallic mold and its manufacture by powder metallurgy |
-
1982
- 1982-12-20 DE DE3247054A patent/DE3247054C1/en not_active Expired
-
1983
- 1983-11-17 EP EP83111466A patent/EP0114232B1/en not_active Expired
- 1983-11-17 DE DE8383111466T patent/DE3371916D1/en not_active Expired
- 1983-12-15 JP JP58235238A patent/JPS59133361A/en active Granted
- 1983-12-20 US US06/563,460 patent/US4597939A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3313633A (en) * | 1963-07-24 | 1967-04-11 | Metco Inc | High temperature flame spray powder |
| GB1099957A (en) * | 1964-09-29 | 1968-01-17 | Metco Inc | Composite carbide flame spray wire or powder |
| DE2433814A1 (en) * | 1974-07-13 | 1976-01-22 | Goetzewerke | Wear resistant coating prodn - of molybdenum alloy produced by plasma spraying |
| EP0009210A2 (en) * | 1978-09-23 | 1980-04-02 | Goetze Ag | Spray powder for producing wear-resistant coatings on surfaces of piston rings or linear seals |
Non-Patent Citations (3)
| Title |
|---|
| PATENTS ABSTRACTS OF JAPAN, Band 5, Nr. 71 (C-54)[743], 13. Mai 1981 & JP - A - 56 20 161 (MITSUBISHI KINZOKU K.K.) 25.02.1981 * |
| SCHWEISSEN UND SCHNEIDEN, Jahrgang 15, Heft 3, 1963, Seiten 97-106 * |
| SCHWEISSTECHNIK 27, Band 9, 1977, Seiten 396-399, DE * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123952A2 (en) * | 1983-04-29 | 1984-11-07 | Goetze Ag | Wear-resistant coating |
| EP0123952B1 (en) * | 1983-04-29 | 1988-07-13 | Goetze Ag | Wear-resistant coating |
| EP0170763A1 (en) * | 1984-06-09 | 1986-02-12 | Goetze Ag | Wear-resistant coating |
| EP0379699A1 (en) * | 1989-01-26 | 1990-08-01 | Asea Brown Boveri Ag | Method for enhancing the corrosion and erosion resistance of the blade of a rotary thermal apparatus and blade produced ba said method |
| CH678067A5 (en) * | 1989-01-26 | 1991-07-31 | Asea Brown Boveri | |
| EP0769568A1 (en) * | 1995-10-03 | 1997-04-23 | Osram Sylvania Inc. | Advanced Mo-based composite powders for thermal spray applications |
| US9919358B2 (en) | 2013-10-02 | 2018-03-20 | H.C. Starck Gmbh | Sintered molybdenum carbide-based spray powder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3247054C1 (en) | 1984-05-10 |
| JPS59133361A (en) | 1984-07-31 |
| EP0114232B1 (en) | 1987-06-03 |
| US4597939A (en) | 1986-07-01 |
| DE3371916D1 (en) | 1987-07-09 |
| JPH0325503B2 (en) | 1991-04-08 |
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