Member having sliding contact surface, compressor and rotary com

Details Member having sliding contact surface, compressor and rotary com Member having sliding contact surface, compressor and rotary com

1997-07-17

2000-06-06

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

With relatively movable partition member

418152, 418178, 428408, F04C 18356, F04C 2900, B32B 900

Patent

active

060711035

ABSTRACT:
A member is disclosed which includes a hard carbon film provided through an interlayer or directly on a main body such as a vane. A mixed layer is formed within the main body or interlayer adjacent to an outer surface of the main body or interlayer. The mixed layer contains carbon and a constituent element of either the main body or the interlayer. The mixed layer has a carbon content gradient in its thickness direction so that a carbon content in a thickness portion thereof closer to an outer surface of the mixed layer is higher than in a thickness portion thereof remoter from the outer surface of the mixed layer.

REFERENCES:
patent: 4842937 (1989-06-01), Meyer et al.
patent: 5021629 (1991-06-01), Shimomura
patent: 5237967 (1993-08-01), Willermet et al.

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