Sliding member with hard ternery film

Details Sliding member with hard ternery film Sliding member with hard ternery film

1995-12-20

1997-02-11

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 926

Patent

active

056012934

ABSTRACT:
A hard film is formed on the outer circumferential surface of a piston ring by means of a physical vapor deposition process. The hard film is a ternary film comprising molybdenum, chromium, and 4 to 22 percent nitrogen by weight, and includes at least molybdenum nitride and chromium nitride. The film has a Vickers hardness of 1400 to 2600, and the crystal grain size of the film is less than 1 .mu.m.

REFERENCES:
patent: 3690686 (1972-09-01), Prasse et al.
patent: 3988119 (1976-10-01), Takahashi et al.
patent: 4407515 (1983-10-01), Naito
patent: 4681817 (1987-07-01), Shinada
patent: 4873150 (1989-10-01), Doi et al.
patent: 4944663 (1990-07-01), Iizuka et al.
patent: 4966751 (1990-10-01), Kaede et al.
patent: 5104132 (1992-04-01), Onada et al.
patent: 5295696 (1994-03-01), Harayama et al.
Japio Abstract of JP 6025826A.
WPI Accession No. 86-247746/38 and JP 61174362A (Toyota) Abstract.

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