DE102008009751B4 - Use of a lubricant under vacuum conditions - Google Patents

Use of a lubricant under vacuum conditions Download PDF

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Publication number
DE102008009751B4
DE102008009751B4 DE102008009751A DE102008009751A DE102008009751B4 DE 102008009751 B4 DE102008009751 B4 DE 102008009751B4 DE 102008009751 A DE102008009751 A DE 102008009751A DE 102008009751 A DE102008009751 A DE 102008009751A DE 102008009751 B4 DE102008009751 B4 DE 102008009751B4
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Prior art keywords
carrier
lubricant
nanopowder
pvs
under vacuum
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DE102008009751A
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DE102008009751A1 (en
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Michael Hentschel
Hubertus von der Waydbrink
Dr. Strümpfel Johannes
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Von Ardenne Anlagentechnik GmbH
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Von Ardenne Anlagentechnik GmbH
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/06—Particles of special shape or size
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/06—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • C10M2201/0623—Oxides; Hydroxides; Carbonates or bicarbonates used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/022—Well-defined aliphatic compounds saturated
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/055—Particles related characteristics
    • C10N2020/06—Particles of special shape or size
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/083—Volatile compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/32—Wires, ropes or cables lubricants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/44—Super vacuum or supercritical use
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2070/00—Specific manufacturing methods for lubricant compositions

Abstract

Verwendung eines Schmierstoffs unter Vakuumbedingungen, wobei der Schmierstoff aus Al2O3 als Nanopulver und einem Trägermittel mit einem Anteil von 0 bis 50 Vol.-% besteht und wobei das Nanopulver aus einem mittels PVS-Verfahren (PVS = Physical Vapor Synthesis = physikalische Gasphasensynthese) hergestellten Al2O3-Nanopulver mit einer Korngröße von 300 bis 400 nm oder einem mittels CVR-Verfahren (CVR = Chemical Vapor Reaction = chemische Gasphasenreaktion) hergestellten Al2O3-Nanopulver mit einer Korngröße von 1 bis 100 nm besteht und wobei das Trägermittel als ein aus dem Schmierstoff entweichendes temporäres Trägermittel ausgebildet ist oder das Trägermittel als ein in dem Schmierstoff verbleibendes permanentes Trägermittel ausgebildet ist.Use of a lubricant under vacuum conditions, the lubricant consisting of Al2O3 as nanopowder and a carrier with a proportion of 0 to 50 vol.% And wherein the nanopowder consists of an Al2O3 produced by means of PVS (PVS = Physical Vapor Synthesis = physical gas phase synthesis) Nanopowder with a grain size of 300 to 400 nm or an Al2O3 nanopowder with a grain size of 1 to 100 nm produced by means of the CVR process (CVR = Chemical Vapor Reaction) and wherein the carrier medium is a temporary escaping from the lubricant Carrier means is formed or the carrier means is designed as a permanent carrier means remaining in the lubricant.

Description

Die Erfindung betrifft die Verwendung eines Schmierstoffs, der Nanopartikel aus Al2O3 enthält, im Vakuum.The invention relates to the use of a lubricant containing nanoparticles of Al 2 O 3 , in a vacuum.

Nanopartikel, die Al2O3 verwenden, sind als aus Al2O3 bestehende Partikel ( DE 42 14 724 A1 ) oder Partikel, deren Kern von einer Al2O3-Schicht überzogen sind ( US 2004/0105980 A1 ), in Verbindung mit einer Trägersubstanz für verschiedene Anwendungen bekannt, z. B. zur Wärmeableitung, zur Verminderung der Entflammbarkeit, als Füllmittel in der Halbleiterindustrie ( WO 2007/019125 A1 ) oder als Schmiermittel.Nanoparticles using Al 2 O 3, are available as of Al 2 O 3 existing particles ( DE 42 14 724 A1 ) or particles whose core is covered by an Al 2 O 3 layer ( US 2004/0105980 A1 ), in connection with a carrier substance for various applications, z. B. for heat dissipation, to reduce the flammability, as a filler in the semiconductor industry ( WO 2007/019125 A1 ) or as a lubricant.

Es ist allgemein bekannt, dass eine mechanische Reibung von Bauteilen untereinander zu Wärmeentwicklung und Energieverlust führt. Auch bewirken die dabei auftretenden Reibungskräfte und der Abrieb einen erhöhten Verschleiß. Zur Reibungsverminderung ist ein Schmierstoff der Fa. MSH Mineralstoffhandel GmbH mit der Bezeichnung „nanovit” bekannt, der einen Anteil von 99% Öl, Fett oder Paste als Schmiermedium enthält. In einer diesbezüglichen Pressemitteilung http://openpr.de/news/130847/Der-Schmierstoff-als-Konstruktionsmittel-zur-Oberflächenfunktionalisierung-auf-Reibungsflächen.html wird G. Schmidt in „Schmierfette” Bd. 500 Seite 64, Expert Verlag 2000 zitiert, der angibt, dass derartige Schmierstoffe 70–90% Mineral- oder Syntheseöl enthalten, also immer noch einen weit überwiegenden Teil. Zu einem sehr geringen Teil weisen diese Schmierstoffe auch Grafite oder Metalloxide (wie z. B. SiO2 oder Al2O3) auf. Allerdings wird die Schmierwirkung oder Reibungsverminderungswirkung von dem überwiegenden Fettanteil ausgehen.It is well known that mechanical friction between components leads to heat generation and energy loss. Also, the friction forces occurring and the abrasion cause increased wear. To reduce friction, a lubricant of the company. MSH Mineralstoffhandel GmbH with the name "nanovit" is known, which contains a proportion of 99% oil, grease or paste as a lubricating medium. In a related press release http://openpr.de/news/130847/Der-Smellstoff-als-Konstruktionsmittel-zur-Oberflächenfunktionalisierung-auf-Reibungsflächen.html G. Schmidt in "greases" Bd. 500, page 64, Expert Verlag 2000 cited, indicating that such lubricants contain 70-90% mineral or synthetic oil, so still a vast majority. To a very small extent, these lubricants also include graphite or metal oxides (such as SiO 2 or Al 2 O 3 ). However, the lubricating effect or friction reducing effect will be based on the predominant fat content.

Derartige Schmierstoffe lassen sich aus Gründen physikalischer Anforderungen nur in sehr begrenztem Maße im Vakuum einsetzen. Insbesondere in Vakuumbeschichtungsanlagen werden diese abgelehnt. Allerdings werden Vakuumbeschichtungsanlagen sehr häufig als Durchlaufbeschichtungsanlage mit zahlreichen mechanisch beweglichen Bauelementen konzipiert, die insbesondere der Substratbewegung innerhalb der Anlage dienen. Auch in der US 2004/0105980 A1 werden selbstschmierende multifunktionale Flüssigkeiten beschrieben, die mineralische oder hydraulische Öle als Trägermittel aufweisen.Such lubricants can be used for reasons of physical requirements only to a very limited extent in a vacuum. In particular, in vacuum coating systems they are rejected. However, vacuum coating systems are very often designed as a continuous coating system with numerous mechanically movable components, which serve in particular the substrate movement within the system. Also in the US 2004/0105980 A1 describes self-lubricating multifunctional liquids, which have mineral or hydraulic oils as a carrier.

In der WO 2007/109817 A2 wird eine andere Lösung für die Schmierung tribologisch beanspruchter Flächen im Vakuum vorgeschlagen. Hier wird ein Gleitlack auf die betreffenden Flächen aufgetragen und getrocknet. Relevanter Stand der Technik findet sich auch in der nachveröffentlichen Druckschrift DE 102008021097 A1 .In the WO 2007/109817 A2 Another solution for the lubrication of tribologically stressed surfaces in vacuum is proposed. Here, a bonded coating is applied to the respective surfaces and dried. Relevant prior art can also be found in the post-published document DE 102008021097 A1 ,

Der Erfindung liegt somit die Aufgabe zugrunde, einen Schmierstoff anzugeben, der einerseits reibungsvermindernd wirkt und andererseits unter Vakuumbedingungen möglicherweise auch mit Wärmeeinwirkung einsetzbar ist.The invention is therefore an object of the invention to provide a lubricant on the one hand friction reducing acts and on the other hand, under vacuum conditions may also be used with heat.

Gemäß der Erfindung wird dies dadurch gelöst, dass ein Schmierstoff gemäß Anspruch 1 verwendet wird. Dabei werden die Pulverteilchen die Reibungsverminderung bewirken. Das Trägermittel – sofern überhaupt vorhanden – dient der Unterstützung des Anhaftens des Nanopulvers an den zu schmierenden Gegenständen. Da dieses nur zu einem sehr geringen Anteil vorhanden ist, wird es keinen oder höchstens einen vernachlässigbaren Einfluss auf Vakuumprozesse, insbesondere Vakuumbeschichtungsprozesse aufweisen.According to the invention, this is achieved by using a lubricant according to claim 1. The powder particles will cause the friction reduction. The carrier means - if present at all - serves to support the adhesion of the nanopowder to the objects to be lubricated. Since this is present only to a very small extent, it will have no or at most a negligible influence on vacuum processes, in particular vacuum coating processes.

Dabei ist vorgesehen, dass das Nanopulver aus einem mittels PVS-Verfahren (PVS = Physical Vapor Synthesis = physikalische Gasphasensynthese) hergestellten Al2O3-Nanopulver mit einer Korngröße von 300 bis 400 nm oder, als alternative, kostengünstige Realisierung der Erfindung, aus einem mittels CVR-Verfahren (CVR = Chemical Vapor Reaktion = chemische Gasphasenreaktion) hergestellten Al2O3-Nanopulver mit einer Korngröße von 1 bis 100 nm besteht.It is envisaged that the nanopowder from a prepared by PVS method (PVS = Physical Vapor Synthesis = physical gas phase synthesis) Al 2 O 3 nanopowder with a particle size of 300 to 400 nm or, as an alternative, cost-effective implementation of the invention, from a by CVR method (CVR = chemical vapor reaction = chemical gas phase reaction) produced Al 2 O 3 nanopowder having a particle size of 1 to 100 nm.

Eine Variante bei der erfindungsgemäßen Verwendung sieht vor, dass das Trägermittel als ein aus dem Schmierstoff entweichendes temporäres Trägermittel ausgebildet ist. Somit wird beim Auftrag des Schmiermittels und beispielsweise zum Zwecke gleichmäßiger Verteilung das Trägermittel eingesetzt. Ist der Auftragsvorgang beendet, entweicht das Trägermittel, wodurch jeder Einfluss auf den Prozess ausgeschlossen wird, da das Al2O3 von sich aus keinen Einfluss zeigt.A variant in the use according to the invention provides that the carrier means is designed as a temporary carrier means escaping from the lubricant. Thus, the carrier is used in the application of the lubricant and, for example, for the purpose of uniform distribution. When the application process is completed, the carrier escapes, thereby excluding any influence on the process, since the Al 2 O 3 has no influence of its own accord.

Eine günstige Realisierung eines temporären Trägermittels ist darin zu sehen, dass das Trägermittel aus Ethanol C2H5OH oder C2H6O besteht.A favorable realization of a temporary carrier is to be seen in that the carrier agent consists of ethanol C 2 H 5 OH or C 2 H 6 O.

Für andere Einsatzgebiete, insbesondere dann, wenn geringe Einflüsse des Trägermittels in Kauf genommen werden können, kann es zweckmäßig sein, beispielsweise die haftverbessernden Eigenschaften des Trägermittel ständig ausnutzen zu können, indem das Trägermittel als ein in dem Schmierstoff verbleibendes permanentes Trägermittel ausgebildet ist.For other applications, especially when small influences of the carrier can be accepted, it may be appropriate to be able to exploit, for example, the adhesive properties of the carrier constantly by the carrier is formed as a remaining in the lubricant permanent carrier.

In einer möglichen Realisierung eines permanenten Trägermittels besteht dieses aus n-Butan C4H10 und in einer anderen Realisierung aus Siliconöl oder synthetischem Polymer.In one possible implementation of a permanent carrier, this consists of n-butane C 4 H 10 and in another embodiment of silicone oil or synthetic polymer.

Infolge der geringen Korngröße bestehen zwischen den Partikeln des Nanopulvers und dem zu schmierenden Gegenstand solche Adhäsionskräfte, die eine gute Haftung des Nanopulvers gewährleisten, die in einigen Einsatzfällen vollkommen ausreichend ist. Hierfür ist vorgesehen, dass der Schmierstoff aus reinem Al2O3-Nanopulver mit einem Trägermittelanteil von 0% ausgebildet ist.Due to the small particle size, between the particles of the nanopowder and the object to be lubricated, there are adhesion forces which ensure a good adhesion of the nanopowder, which is completely sufficient in some applications. For this purpose, it is provided that the lubricant is formed from pure Al 2 O 3 nanopowder with a carrier content of 0%.

Die Erfindung soll nachfolgend anhand mehrerer Ausführungsbeispiele näher erläutert werden. Dabei soll das erfindungsgemäß verwendete Schmiermittel nachfolgend mit seinen verschiedenen Realisierungen bei verschiedenen Einsatzzwecken beschrieben werden.The invention will be explained in more detail with reference to several embodiments. In this case, the lubricant used in the invention will be described below with its various realizations in different applications.

Das erfindungsgemäß verwendete Schmiermittel wird in folgenden Formen realisiert:
A Aluminiumoxid Al2O3 mit Ethanol C2H5OH oder C2H6O als Trägermittel,
B Aluminiumoxid Al2O3 mit n-Butan C4H10 als Trägermittel,
C Aluminiumoxid Al2O3 mit Silikonöl oder synthetischem Polymer als Trägermittel und
D reines Aluminiumoxid Al2O3-Pulver ohne Trägermittel.The lubricant used in the invention is realized in the following forms:
A alumina Al 2 O 3 with ethanol C 2 H 5 OH or C 2 H 6 O as a carrier,
B alumina Al 2 O 3 with n-butane C 4 H 10 as carrier,
C alumina Al 2 O 3 with silicone oil or synthetic polymer as a carrier and
D pure alumina Al 2 O 3 powder without carrier.

In Vakuumbeschichtungsanlagen werden verschiedene mechanisch bewegte Bauteile eingesetzt, die mit dem erfindungsgemäß verwendete Schmiermittel in den verschiedenen Formen, wie sie oben genannt sind, gemäß nachfolgender Aufstellung versehen werden: Bauteil Form des Schmiermittels Stahlseile als Antriebs- oder Spannkonstruktionen A Ketten, insbesondere Bogenzahn-Rollenketten B C D Wälzlager A Klauenschaltung B C allgemein Werkstoffe für den Einsatz bei mechanischer Belastung (Sustamide) A B C D temporäre Klemmstellen, starre Kupplungen B C D Schraubenverbindungen B C D In vacuum coating plants various mechanically moving components are used, which are provided with the lubricant used in the invention in the various forms, as mentioned above, according to the following list: component Shape of the lubricant Steel cables as drive or clamping constructions A Chains, in particular curved tooth roller chains BCD roller bearing A dog clutch engagement BC general materials for use under mechanical stress (Sustamida) ABCD temporary clamping points, rigid couplings BCD Bolted connections BCD

Claims (4)

Verwendung eines Schmierstoffs unter Vakuumbedingungen, wobei der Schmierstoff aus Al2O3 als Nanopulver und einem Trägermittel mit einem Anteil von 0 bis 50 Vol.-% besteht und wobei das Nanopulver aus einem mittels PVS-Verfahren (PVS = Physical Vapor Synthesis = physikalische Gasphasensynthese) hergestellten Al2O3-Nanopulver mit einer Korngröße von 300 bis 400 nm oder einem mittels CVR-Verfahren (CVR = Chemical Vapor Reaction = chemische Gasphasenreaktion) hergestellten Al2O3-Nanopulver mit einer Korngröße von 1 bis 100 nm besteht und wobei das Trägermittel als ein aus dem Schmierstoff entweichendes temporäres Trägermittel ausgebildet ist oder das Trägermittel als ein in dem Schmierstoff verbleibendes permanentes Trägermittel ausgebildet ist.Use of a lubricant under vacuum conditions, wherein the lubricant consists of Al 2 O 3 as a nanopowder and a carrier in a proportion of 0 to 50 vol .-%, and wherein the nanopowders from a PVS (Physical Vapor Synthesis = PVS) process ) produced Al 2 O 3 nanopowder having a particle size of 300 to 400 nm or by means of CVR (CVR = chemical vapor reaction) produced Al 2 O 3 nanopowder having a particle size of 1 to 100 nm and wherein the carrier means is designed as a temporary carrier means escaping from the lubricant, or the carrier means is designed as a permanent carrier means remaining in the lubricant. Verwendung nach Anspruch 1, dadurch gekennzeichnet, dass das temporäre Trägermittel aus Ethanol C2H5OH oder C2H6O besteht.Use according to claim 1, characterized in that the temporary carrier agent consists of ethanol C 2 H 5 OH or C 2 H 6 O. Verwendung nach Anspruch 1, dadurch gekennzeichnet, dass das permanente Trägermittel aus n-Butan C4H10 besteht.Use according to claim 1, characterized in that the permanent carrier agent consists of n-butane C 4 H 10 . Verwendung nach Anspruch 1, dadurch gekennzeichnet, dass das permanente Trägermittel aus Siliconöl oder synthetischem Polymer besteht.Use according to claim 1, characterized in that the permanent carrier agent consists of silicone oil or synthetic polymer.
DE102008009751A 2008-02-18 2008-02-18 Use of a lubricant under vacuum conditions Expired - Fee Related DE102008009751B4 (en)

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