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US 5,525,246 AGranted
Sliding-Bearing Material
AssigneeTaiho Kogyo Co., Ltd.
InventorsSouzi Kamiya, Yoshio Kumada, Kenichiro Futamura
Life of this patent
Estimating the term…
Abstract
A sliding-bearing material having enhanced seizure resistance and fatigue resistance. The sliding-bearing material comprises an aluminum bearing alloy whose surface has been treated and a coating layer formed on the aluminum bearing alloy and consisting of from 90 to 55% by weight of a sold lubricant and from 10 to 45% by weight of a polyimide binder. Treatment of the aluminum bearing alloy can be by roughening with alkali etching and pickling, by covering with a chemical conversion film, and/or by drilling.
Claims16
A sliding-bearing material comprising:
- an aluminum bearing alloy, whose surface is roughened by alkali-etching and pickling and is covered by a phosphate layer, said aluminum bearing alloy consisting essentially of 10 wt. % or less of at least one element selected from the group consisting of Mn, Sb, Sr, Fe, Mo, Ti, W, Zr, V, Cu, Mg and Zn;
- 20 wt. % or less of at least one element selected from the group consisting of Sn, Pb, In, Tl, and Bi, and balance aluminum, and said phosphate consisting of one member selected from the group consisting of Zn phosphate and Zn-Ca phosphate;
- a coating layer formed on said phosphate layer and consisting of from 90 to 55% by weight of a solid lubricant and from 10 to 45% by weight of a polyimide binder.
Dependencies are inferred from the claim text.