Sliding material and method of manufacturing the same

Details Sliding material and method of manufacturing the same Sliding material and method of manufacturing the same

1991-02-26

1992-11-10

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428550, 428551, 419 9, 419 10, 419 35, 427405, 427409, 4274195, G22F 700

Patent

active

051621576

ABSTRACT:
Disclosed are a sliding material comprising a backing metal having a porous metal layer formed on the surface thereof in which pores are defined and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (a) 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, and the remaining portion substantially composed of PTFE, a sliding material comprising a backing metal having porous metal layer formed on the surface thereof in which pores are defined and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (b) 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, 0.5-30 vol % of at least one kind selected from a group B (filler) composed of solid lubricant such as metal oxide, metal fluoride, graphite, and the like, a fiber material such as carbon fiber, glass fiber, and the like, and ceramics such as SiC, and the like, and the remaining portion substantially composed of PTFE, a total of the respective components other than the PTFE being 5.5-50 vol %, and a method of manufacturing a sliding material comprising the steps of impregnating and covering the above composition for impregnation coating (a) or (b) to the pores and the surface thereof defined in the porous metal layer formed on the surface of a backing metal, and thereafter baking the backing metal with the above composition for impregnation coating (a) or (b) in a neutral atmosphere or in a reducing atmosphere.

REFERENCES:
patent: 4666787 (1987-05-01), Bickle et al.
patent: 4732818 (1988-03-01), Pratt et al.
patent: 4865922 (1989-09-01), Davies

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