Titanium lubricating material suitable for use in vacuum
First Claim
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1. A lubricating material used in space or vacuum, comprising:
- a substrate made of titanium or titanium alloy;
a coating of an oxide of said titanium formed over the surface of said substrate to increase bonding force of a solid lubricating film applied thereover; and
a solid lubricating film formed over said oxide coating.
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Abstract
To provide a lubricating material suitable for use in space or vacuum, light in weight, low in friction coefficient and long in life time, oxidation treatment is effected on the surface of titanium or titanium alloy substrate before a solid lubricating film is applied to the substrate. The formed oxide (Ti2 O) can strengthen bonding force between the substrate (Ti) and the solid lubricating film (e.g. MoS2).
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Citations
8 Claims
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1. A lubricating material used in space or vacuum, comprising:
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a substrate made of titanium or titanium alloy; a coating of an oxide of said titanium formed over the surface of said substrate to increase bonding force of a solid lubricating film applied thereover; and a solid lubricating film formed over said oxide coating. - View Dependent Claims (2, 3)
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4. A method of making a lubricating material usable in space or vacuum, comprising the steps of:
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(a) providing a titanium or titanium alloy substrate; (b) cleaning the substrate; (c) heating the substrate at about 700°
C. for at least 10 hours to form a coating of titanium oxide; and(d) applying a solid lubricating film onto the titanium oxide coating, wherein said oxide increases bonding force of said lubricating film to said substrate. - View Dependent Claims (5, 6, 7, 8)
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Specification