EP0112453A1 - Spraying material, especially for the production of wear and temperature resistant coatings, especially for machine parts of combustion engines - Google Patents
Spraying material, especially for the production of wear and temperature resistant coatings, especially for machine parts of combustion engines Download PDFInfo
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- EP0112453A1 EP0112453A1 EP83110466A EP83110466A EP0112453A1 EP 0112453 A1 EP0112453 A1 EP 0112453A1 EP 83110466 A EP83110466 A EP 83110466A EP 83110466 A EP83110466 A EP 83110466A EP 0112453 A1 EP0112453 A1 EP 0112453A1
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- wettable powder
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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
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- the invention relates to a wettable powder with aluminum oxide and titanium dioxide for the production of wear-resistant and high-temperature resistant coatings on in particular the running and friction surfaces of internal combustion engines.
- Machine parts exposed to sliding friction and / or high-temperature stresses such as piston rings, the piston crowns or the top land of pistons, and the friction surfaces of synchronizer rings, preferably by means of a plasma spraying process.
- the present invention is therefore based on the object to further improve thermal spray coatings with aluminum oxide and titanium dioxide, in particular with regard to their wear resistance, their fire resistance, their thermal shock resistance and, in connection with this, their outbreak resistance or their compatibility with the counterpart.
- the thermal spray coatings should be as simple and cost-effective as possible to produce and rework, and they should not only be used for coatings on piston rings in chambered or overmolded form but also for coatings on similarly loaded machine parts in internal combustion engines Piston bottoms or the top land of the pistons or on the friction surfaces of synchronizer rings.
- this object is achieved by a wettable powder composed of 50 to 90 percent by weight aluminum oxide and 5 to 40 percent by weight titanium dioxide, the total of 5 to 30 percent by weight lanthanum oxide (La 2 0 3 ) and / or niobium oxide (Nb 2 0 5 ), optionally with a content of up to 30 weight percent calcium carbonate are added. It was found that if only lanthanum oxide is used as an additive, this can also be used alone without additions of calcium carbonate. According to the invention, the lanthanum oxide does not necessarily have to be present as pure lanthanum oxide, but can also contain up to about 30 percent by weight of other oxides of the rare earth metals in the mixture.
- niobium oxide when using niobium oxide as an additive, however, it preferably contains up to a maximum of 30 percent by weight calcium carbonate.
- the coatings are preferably produced by a plasma spraying process with primary and secondary gases, preferably of nitrogen and hydrogen, argon and hydrogen or else nitrogen and argon.
- the spray layers can be applied to the machine parts, preferably made of cast iron, steel or aluminum or aluminum alloys, directly or using previously applied intermediate layers, usually made of molybdenum, nickel-chromium alloys or nickel-aluminum alloys.
- the layers can either be overmoulded over the entire surface or injected as fillings into one-sided or two-sided chambered depressions.
- the wettable powders are preferred for the coating of piston rings and for the full or partial coating of the piston crowns and / or the top land areas of pistons. used in internal combustion engines. However, the powders are also suitable for producing a wear-resistant coating on the friction surfaces of other machine parts, such as, in particular, synchronizer rings.
- piston rings with various powder compositions, according to the invention produced in overmolded form and in one or both sides chambered form with and without the use of intermediate layers. After test runs with simulated extreme loads, the layers showed only slight wear and tear, no burn marks and no signs of breakouts. The cylinder surfaces examined as counter-rotating partners showed no major signs of wear.
- the known wettable powder made of aluminum oxide and titanium dioxide is improved so much, especially with regard to its thermal shock resistance and its resistance to breakout, that it can be used to produce coatings on machine parts subjected to friction with the relatively high thermal load of an internal combustion engine.
- the significantly improved breakout resistance of the layers seems to be caused by two different mechanisms of action. It was found that with a proportion of only 5 to 10 percent by weight addition of lanthanum oxide and / or niobium oxide with calcium carbonate, above all, it only improves the internal cohesion of the layers.
- the layers additionally showed a multiplicity of microscopic cracks which, when subjected to stress, lead to a partial or complete reduction of internal tensions in the layers and thus the breaking out of the layer or parts of it Prevent layer effectively.
- the invention thus provides wettable powders based on aluminum oxide and titanium dioxide, which can be used to produce wear-resistant and fire-retardant and at the same time heat-resistant and thermo-shock-resistant and therefore break-out-resistant coatings on, above all, thermally stressed machine parts in internal combustion engines by means of plasma spraying processes.
- the spray powders used are inexpensive primarily because of the aluminum oxides and titanium dioxides used, and the layers produced can be reworked relatively easily after spraying.
- the intermediate layers used preferably consist of a nickel-chromium alloy with 80 percent by weight of nickel and 20 percent by weight of chromium and a nickel-aluminum alloy with 95 percent by weight of nickel and 5 percent by weight of aluminum.
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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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Ein Spritzpulver für die Herstellung verschleißfester und temperaturbeständiger Beschichtungen von insbesondere Maschinenteilen in Verbrennungskraftmaschinen, wie Kolbenringen, Feuerstegen und Kolbenböden von Kolben sowie den Reibflächen von Synchronringen, besteht aus 50 bis 90 Gew.-% Aluminiumoxid (Al2O3) und 5 bis 40 Gew.-% Titandioxid (TiO2) mit Zusätzen an 5 bis 30 Gew.-% Lanthanoxid (La2O3) und/oder Nioboxid (Nb2O3) mit gegebenenfalls 30 Gew.-% Calciumcarbonat (CaCO3). Die vorzugsweise im Plasmaspritzverfahren aufgetragenen Schichten erwiesen sich vor allem besonders warmfest und thermoschockbeständig, so daß sich mit ihnen vor allem ausbruchsichere, brandspursichere und verschleißfeste Beschichtungen an den kritischen Stellen der thermisch belasteter Maschinenteile herstellen lassen.A wettable powder for the production of wear-resistant and temperature-resistant coatings, in particular machine parts in internal combustion engines, such as piston rings, fire bars and piston crowns of pistons and the friction surfaces of synchronizer rings, consists of 50 to 90% by weight aluminum oxide (Al2O3) and 5 to 40% by weight Titanium dioxide (TiO2) with additions of 5 to 30% by weight of lanthanum oxide (La2O3) and / or niobium oxide (Nb2O3) with optionally 30% by weight of calcium carbonate (CaCO3). The layers, which are preferably applied using the plasma spraying process, have proven to be particularly heat-resistant and resistant to thermal shock, so that they can be used to produce, in particular, escape-proof, fire-proof and wear-resistant coatings at the critical points of the thermally stressed machine parts.
Description
Die Erfindung betrifft ein Spritzpulver mit Aluminiumoxid und Titandioxid für die Herstellung verschleißfester und hochtemperaturbeständiger Beschichtungen auf insbesondere den Lauf- und Reibflächen von in Verbrennungskraftmaschi-. nen gleitender Reibung und/oder Hochtemperaturbelastungen ausgesetzten Maschinenteilen, wie Kolbenringen, den Kolbenböden beziehungsweise den Feuerstegen von Kolben sowie den Reibflächen von Synchronringen, durch bevorzugt ein Plasmaspritzverfahren.The invention relates to a wettable powder with aluminum oxide and titanium dioxide for the production of wear-resistant and high-temperature resistant coatings on in particular the running and friction surfaces of internal combustion engines. Machine parts exposed to sliding friction and / or high-temperature stresses, such as piston rings, the piston crowns or the top land of pistons, and the friction surfaces of synchronizer rings, preferably by means of a plasma spraying process.
Nach beispielsweise der US-PS 3.697.091 ist es bekannt, die Laufflächen von Kolbenringen für Verbrennungskraftmaschinen statt mit verschleißfesten Hartchrom- oder Molybdänschichten, durch bevorzugt ein Plasmaspritzverfahren mit oxidkeramischen Schichten aus Aluminiumoxid und Titandioxid oder Zirkondioxid zu überziehen. Schichten dieser Art zeichnen sich durch gute Verschleißfestigkeit und Brandspursicherheit auch bei Hochtemperaturbelastungen aus. Derartige Schichten sind allerdings noch relativ thermoschockempfindlich, so daß Überzüge sowohl wenn sie in gekammerter als auch in überspritzter Form vorliegen ausbrechen und damit verbunden einen hohen Verschleiß des Gegenlaufpartners hervorrufen können.According to US Pat. No. 3,697,091, for example, it is known to coat the running surfaces of piston rings for internal combustion engines instead of with wear-resistant hard chrome or molybdenum layers, preferably by a plasma spraying process with oxide-ceramic layers made of aluminum oxide and titanium dioxide or zirconium dioxide. Layers of this type are characterized by good wear resistance and fire protection, even under high temperature loads. However, such layers are still relatively sensitive to thermal shock, so that coatings break out both when they are in a chambered and in an overmolded form and, as a result, can cause high wear on the counterpart.
Zur Abhilfe ist es daher nach der DE-PS 3.033.332 bekannt, Plasmaspritzpulvern aus Aluminiumoxid und Titandioxid, für die Beschichtungen von Kolbenringen Yttriumoxid in Mengen von 2 bis 6 Gewichtsprozent hinzuzufügen. Auf diese Weise wurde auch die Thermoschockbeständigkeit derartiger Beschichtungen wesentlich verbessert, ohne daß die Verschleißfestigkeit und die Hochtemperaturbeständigkeit der Schichten wesentlich herabgesetzt wurde. Allerdings werden durch diese Maßnahmen alle Nachteile der Aluminiumoxid-Titandioxid Plasmaspritzschichten auf Kolbenringen, insbesondere in bezug auf ihre Thermoschockbeständigkeit und damit verbunden, in bezug auf ihre Ausbruchsicherheit beziehungsweise ihre schlechte Verträglichkeit mit dem Gegenlaufpartner noch nicht ganz behoben.To remedy this, it is therefore known from DE-PS 3,033,332 to add plasma spray powders made of aluminum oxide and titanium dioxide, for the coating of piston rings yttrium oxide in amounts of 2 to 6 percent by weight. In this way, the thermal shock resistance of such coatings was significantly improved without the wear resistance and the high temperature resistance of the layers being significantly reduced. However, all of the disadvantages of the aluminum oxide-titanium dioxide plasma spray layers on piston rings, in particular with regard to their thermal shock resistance and, in connection with them, with regard to their security against breakouts and their poor compatibility with the counterpart, are not yet completely eliminated by these measures.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, thermische Spritzschichten mit Aluminiumoxid und Titandioxid, insbesondere in bezug auf ihre Verschleiß festigkeit, ihre Brandspursicherheit, ihre Thermoschockbeständigkeit und damit verbunden ihre Ausbruchsicherheit beziehungsweise ihre Verträglichkeit zum Gegenlaufpartner noch weiter zu verbessern. Die thermischen Spritzschichten sollen möglichst einfach und kostensparend herzustel len und-nachzuarbeiten sein, und sie sollen sich außer zu Überzügen auf Kolbenringen in gekammerter oder überspritzter Form auch zu Überzügen auf ähnlich belasteten Maschinenteilen in Verbrennungskraftmaschinen, wie auf Kolbenböden oder den Feuerstegen der Kolben oder auch auf den Reibflächen von Synchronringen eignen.The present invention is therefore based on the object to further improve thermal spray coatings with aluminum oxide and titanium dioxide, in particular with regard to their wear resistance, their fire resistance, their thermal shock resistance and, in connection with this, their outbreak resistance or their compatibility with the counterpart. The thermal spray coatings should be as simple and cost-effective as possible to produce and rework, and they should not only be used for coatings on piston rings in chambered or overmolded form but also for coatings on similarly loaded machine parts in internal combustion engines Piston bottoms or the top land of the pistons or on the friction surfaces of synchronizer rings.
Erfindungsgemäß wird diese Aufgabe durch ein Spritzpulver aus.50 bis 90 Gewichtsprozent Aluminiumoxid und 5 bis 40 Gewichtsprozent Titandioxid gelöst, dem insgesamt 5 bis 30 Gewichtsprozent Lanthanoxid (La203) und/oder Nioboxid (Nb205) mit gegebenenfalls einem Gehalt von bis zu 30 Gewichtsprozent Caiciumcarbonat zugegeben sind. Und zwar wurde gefunden, daß dann, wenn als Zusatz nur Lanthanoxid verwendet wird, dieses auch alleine ohne Zusätze an Calciumcarbonat eingesetzt werden kann. Das Lanthanoxid braucht dabei im Sinne der Erfindung nicht unbedingt als reines Lanthanoxid vorzuliegen, sondern kann im Gemisch auch andere Oxide der seltenen Erdmetalle bis zu etwa 30 Gewichtsprozent enthalten.According to the invention, this object is achieved by a wettable powder composed of 50 to 90 percent by weight aluminum oxide and 5 to 40 percent by weight titanium dioxide, the total of 5 to 30 percent by weight lanthanum oxide (La 2 0 3 ) and / or niobium oxide (Nb 2 0 5 ), optionally with a content of up to 30 weight percent calcium carbonate are added. It was found that if only lanthanum oxide is used as an additive, this can also be used alone without additions of calcium carbonate. According to the invention, the lanthanum oxide does not necessarily have to be present as pure lanthanum oxide, but can also contain up to about 30 percent by weight of other oxides of the rare earth metals in the mixture.
Bei Verwendung von Nioboxid als Zusatz enthält dieses jedoch bevorzugt bis zu maximal 30 Gewichtsprozent Calciumcarbonat.When using niobium oxide as an additive, however, it preferably contains up to a maximum of 30 percent by weight calcium carbonate.
Typische Plasmaspritzpulver bestehen dann aus
- 50 Gewichtsprozent Aluminiumoxid (Al2O3)
- 30 Gewichtsprozent Titandioxid (TiO2) und
- 20 Gewichtsprozent Zusatzstoff aus entweder Lanthanoxid (La2O3) oder 16 % Nioboxid (Nb205) und 4 % Caciumcarbonat oder Gemischen aus insgesamt 16% Lanthanoxid (La203) und/oder Nioboxid (Nb205) mit 4 % Calciumcarbonat. Bevorzugt wird das Spritzpulver in der Form von Gemischen der einzelnen Komponenten untereinander verwendet. Im Sinne der Erfindung können mindestens zwei der Komponenten davon jedoch auch in der Form von Verbundpulvern oder als miteinander verpreßten Mikropellets vorliegen, oder mindestens zwei der Komponenten können in der Form von Verbindungen untereinander eingesetzt werden. Bevorzugt liegen die Korngrößen der verwendeten Pulver zwischen 5 und 106 µm.
- 50 weight percent aluminum oxide (Al 2 O 3 )
- 30 percent by weight titanium dioxide (TiO 2 ) and
- 20% by weight of additive consisting of either lanthanum oxide (La 2 O 3 ) or 16% niobium oxide (Nb 2 0 5 ) and 4% cacium carbonate or mixtures of a total of 16% lanthanum oxide (La 2 0 3 ) and / or niobium oxide (Nb 2 0 5 ) 4% calcium carbonate. The wettable powder is preferably used in the form of mixtures of the individual components with one another. For the purposes of the invention, however, at least two of the components thereof can also be in the form of composite powders or as micropellets pressed together, or at least two of the components can be used in the form of compounds with one another. The grain sizes of the powders used are preferably between 5 and 106 μm.
Die Herstellung der Überzüge erfolgt bevorzugt durch ein Plasmaspritzverfahren mit Primär- und Sekundärgasen aus vorzugsweise Stickstoff und Wasserstoff, Argon und Wasserstoff oder auch Stickstoff und Argon. Der Auftrag der Spritzschichten kann dabei auf die Maschinenteile aus bevorzugt Gußeisen, Stahl oder auch Aluminium beziehungsweise Aluminiumlegierungen direkt oder unter Verwendung von vorher aufgetragenen Zwischenschichten aus meist Molybdän, Nickel-Chromlegierungen oder Nickelaluminiumlegierungen erfolgen. Die Schichten können entweder ganzflächig überspritzt oder in einseitig oder zweiseitig gekammerte Vertiefungen als Füllungen eingespritzt werden. Die Spritzpulver werden bevorzugt zur Beschichtung von Kolbenringen und zur ganzoder teilflächigen Beschichtung der Kolbenböden und/oder der Feuerstegbereiche von Kolben. in Verbrennungskraftmaschinen verwendet. Die Pulver sind jedoch auch zur Herstellung von verschleißfesten Beschichtung der Reibflächen anderer Maschinenteile, wie insbesondere von Synchronringen, geeignet.The coatings are preferably produced by a plasma spraying process with primary and secondary gases, preferably of nitrogen and hydrogen, argon and hydrogen or else nitrogen and argon. The spray layers can be applied to the machine parts, preferably made of cast iron, steel or aluminum or aluminum alloys, directly or using previously applied intermediate layers, usually made of molybdenum, nickel-chromium alloys or nickel-aluminum alloys. The layers can either be overmoulded over the entire surface or injected as fillings into one-sided or two-sided chambered depressions. The wettable powders are preferred for the coating of piston rings and for the full or partial coating of the piston crowns and / or the top land areas of pistons. used in internal combustion engines. However, the powders are also suitable for producing a wear-resistant coating on the friction surfaces of other machine parts, such as, in particular, synchronizer rings.
Aus den erfindungsgemäßen Spritzpulvern wurden in Proben durch Plasmaspritzen verschiedene Schichten hergestellt. Die Verschleißfestigkeit, die Wärmefestigkeit, die Thermoschockbeständigkeit und die Ausbruchfestigkeit wurde untersucht und zeigte hervorragende Werte.Various layers were produced in samples from the wettable powders according to the invention by plasma spraying. The wear resistance, the heat resistance, the thermal shock resistance and the breakout resistance were examined and showed excellent values.
Für Motorversuche in einem schnellaufenden PKW-Dieselmotor wurden Kolbenringe mit verschiedenen Pulverzusammensetzungen, gemäß der Erfindung; in überspritzter Form und in ein- beziehungsweise beidseitig gekammerter Form mit und ohne Verwendung von Zwischenschichten hergestellt. Nach Testläufen bei simulierten extremen Belastungen zeigten die Schichten nur einen geringen Verschleiß sowie keinerlei Brandspurbildung und keinerlei Ausbrucherscheinungen. Die untersuchten Zylinderlaufflächen als Gegenlaufpartner wiesen keinerlei größere Verschleißspuren auf.For engine tests in a high-speed passenger car diesel engine, piston rings with various powder compositions, according to the invention; produced in overmolded form and in one or both sides chambered form with and without the use of intermediate layers. After test runs with simulated extreme loads, the layers showed only slight wear and tear, no burn marks and no signs of breakouts. The cylinder surfaces examined as counter-rotating partners showed no major signs of wear.
Durch den erfindungsgemäßen Einsatz der Nioboxid-, Lanthanoxid- und/oder Calciumcarbonat-Zusätze ist somit das bekannte Spritzpulver aus Aluminiumoxid und Titandioxidt vor allem in bezug auf seine Thermoschockbeständigkeit beziehungsweise seine Ausbruchsicherheit so wesentlich verbessert, daß es sich zur Herstellung von Beschichtungen von reibend belasteten Maschinenteilen mit der relativ hohen thermischen Belastung einer Verbrennungskraftmaschine eignet. Die wesentlich verbesserte Ausbruchsicherheit der Schichten scheint dabei durch zwei verschiedene Wirkungsmechanismen hervorgerufen zu werden. Gefunden wurde, daß bei einem Anteil von nur 5 bis 10 Gewichtsprozent Zusatz an Lanthanoxid und/oder Nioboxid mit Calciumcarbonat vor allem nur den inneren Zusammenhalt der Schichten verbessert. Bei einer weiteren Erhöhung der Zusätze mit Anteilen von bis zu 30 Gewichtsprozent zeigten die Schichten zusätzlich eine Vielzahl von mikroskopisch kleinen Rissen, die bei Belastung zu einem teilweisen oder vollständigen Abbau von inneren Spannungen in den Schichten fuhren und so das Ausbrechen der Schicht oder von Teilen der Schicht zusätzlich wirkungsvoll verhindern.Through the use of the niobium oxide, lanthanum oxide and / or calcium carbonate additives according to the invention, the known wettable powder made of aluminum oxide and titanium dioxide is improved so much, especially with regard to its thermal shock resistance and its resistance to breakout, that it can be used to produce coatings on machine parts subjected to friction with the relatively high thermal load of an internal combustion engine. The significantly improved breakout resistance of the layers seems to be caused by two different mechanisms of action. It was found that with a proportion of only 5 to 10 percent by weight addition of lanthanum oxide and / or niobium oxide with calcium carbonate, above all, it only improves the internal cohesion of the layers. With a further increase of the additives with proportions of up to 30 percent by weight, the layers additionally showed a multiplicity of microscopic cracks which, when subjected to stress, lead to a partial or complete reduction of internal tensions in the layers and thus the breaking out of the layer or parts of it Prevent layer effectively.
Durch die Erfindung sind somit Spritzpulver auf der Basis von Aluminiumoxid und Titandioxid geschaffen, mit denen sich bevorzugt durch Plasmaspritzverfahren verschleißfeste und brandspursichere und zugleich warmfeste und thermoschockbeständige und damit ausbruchsichere Beschichtungen auf vor allem thermisch belasteten Maschineateilen in Verbrennungskraftmaschinen herstellen lassen. Die verwendeten-Spritzpulver sind vor allem wegen der verwendeten Aluminiumoxide und Titandioxide preiswert, und die hergestellten Schichten lassen sich relativ einfach nach dem Spritzen nacharbeiten.The invention thus provides wettable powders based on aluminum oxide and titanium dioxide, which can be used to produce wear-resistant and fire-retardant and at the same time heat-resistant and thermo-shock-resistant and therefore break-out-resistant coatings on, above all, thermally stressed machine parts in internal combustion engines by means of plasma spraying processes. The spray powders used are inexpensive primarily because of the aluminum oxides and titanium dioxides used, and the layers produced can be reworked relatively easily after spraying.
Mit folgenden Spritzpulvern wurden in Motortestläufen besonders gute Werte erzielt:Particularly good values were achieved in engine test runs with the following wettable powders:
- 55 Gewichtsprozent Aluminiumoxid (Al203)55 weight percent aluminum oxide (Al203)
- 35 Gewichtsprozent Titandioxid (Ti02)35 percent by weight titanium dioxide (Ti0 2 )
- 8 Gewichtsprozent Nioboxid (Nb205)8 weight percent niobium oxide (Nb 2 0 5 )
- 2 Gewichtsprozent Calciumcarbonat (CaCO3)2% by weight calcium carbonate (CaCO 3 )
- 50 Gewichtsprozent Aluminiumoxid (Al2O3)50 weight percent aluminum oxide (Al 2 O 3 )
- 30 Gewichtsprozent Titandioxid (TiO2)30 percent by weight titanium dioxide (TiO 2 )
- 20 Gewichtsprozent Lanthanoxid (La203)20% by weight of lanthanum oxide (La 2 0 3 )
- 50 Gewichtsprozent Aluminiumoxid (Al2O3)50 weight percent aluminum oxide (Al 2 O 3 )
- 30 Gewichtsprozent Titandioxid (TiO2)30 percent by weight titanium dioxide (TiO 2 )
- 16 Gewichtsprozent Nioboxid (Nb205)16% by weight niobium oxide (Nb 2 0 5 )
- 4 Gewichtsprozent Calciumcarbonat (CaC03)4 weight percent calcium carbonate (CaC0 3 )
Die verwendeten Zwischenschichten bestehen bevorzugt aus einer Nickel-Chromlegierung mit 80 Gewichtsprozent Nickel und 20 Gewichtsprozent Chrom und einer Nickel-Aluminiumlegierung mit 95 Gewichtsprozent Nickel und 5 Gewichtsprozent Aluminium.The intermediate layers used preferably consist of a nickel-chromium alloy with 80 percent by weight of nickel and 20 percent by weight of chromium and a nickel-aluminum alloy with 95 percent by weight of nickel and 5 percent by weight of aluminum.
Claims (12)
besteht.4. wettable powder according to claims 1 and 3, characterized in that the wettable powder
consists.
besteht.5. wettable powder according to claims 1 and 2, characterized in that the wettable powder
consists.
besteht.6. A wettable powder according to claim 1, characterized. Characterized in that the wettable powder
consists.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3244073 | 1982-11-29 | ||
DE3244073A DE3244073C1 (en) | 1982-11-29 | 1982-11-29 | Spray powder with aluminum oxide and titanium dioxide for the production of wear-resistant and break-out-proof coatings |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0112453A1 true EP0112453A1 (en) | 1984-07-04 |
EP0112453B1 EP0112453B1 (en) | 1987-01-14 |
Family
ID=6179311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83110466A Expired EP0112453B1 (en) | 1982-11-29 | 1983-10-20 | Spraying material, especially for the production of wear and temperature resistant coatings, especially for machine parts of combustion engines |
Country Status (4)
Country | Link |
---|---|
US (1) | US4542111A (en) |
EP (1) | EP0112453B1 (en) |
JP (1) | JPS59107080A (en) |
DE (2) | DE3244073C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0123952A2 (en) * | 1983-04-29 | 1984-11-07 | Goetze Ag | Wear-resistant coating |
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DE3421569C1 (en) * | 1984-06-09 | 1985-06-27 | Goetze Ag, 5093 Burscheid | Wear-resistant coating |
JPS61179009A (en) * | 1985-01-31 | 1986-08-11 | 日本特殊陶業株式会社 | Alumina ceramics composition |
US4665637A (en) * | 1985-07-26 | 1987-05-19 | Braun Aktiengesellschaft | Sole plate coating for a fabric pressing device |
US4702933A (en) * | 1985-07-26 | 1987-10-27 | Braun Aktiengesellschaft | Fabric pressing device |
DE3772061D1 (en) * | 1986-01-28 | 1991-09-19 | Matsushita Electric Ind Co Ltd | METHOD FOR PRODUCING CERAMIC BODIES WITH HEAT SHOCK RESISTANCE. |
US4877705A (en) * | 1988-03-03 | 1989-10-31 | Vesuvius Crucible Company | Plasma spray coated ceramic bodies and method of making same |
DE3827646A1 (en) * | 1988-08-16 | 1990-02-22 | Bayer Ag | SINTERABLE RAW MATERIAL POWDER BASED ON ALUMINUM TITANATE, METHOD FOR THE PRODUCTION THEREOF AND THE SINTER MOLDED BODIES MADE THEREOF AND THEIR USE THEREOF |
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EP0123952B1 (en) * | 1983-04-29 | 1988-07-13 | Goetze Ag | Wear-resistant coating |
Also Published As
Publication number | Publication date |
---|---|
US4542111A (en) | 1985-09-17 |
DE3244073C1 (en) | 1984-05-30 |
DE3369160D1 (en) | 1987-02-19 |
JPS59107080A (en) | 1984-06-21 |
EP0112453B1 (en) | 1987-01-14 |
JPH0416542B2 (en) | 1992-03-24 |
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