Nonferrous piston ring with hard surface treatment layer

Details Nonferrous piston ring with hard surface treatment layer Nonferrous piston ring with hard surface treatment layer

1992-07-02

1994-05-31

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277236, 277DIG6, F16J 926

Patent

active

053163214

ABSTRACT:
A piston ring is made of a titanium alloy, at least an outer peripheral surface and upper and lower surfaces thereof are formed with a nitrogen diffused layer, and at least an outer peripheral sliding surface thereof is coated with a hard film by physical vapor deposition on the nitrogen diffused layer.

REFERENCES:
patent: 3583713 (1971-06-01), Sugahara
patent: 3916054 (1975-10-01), Long et al.
patent: 4359230 (1982-11-01), Bruni
patent: 4612260 (1986-09-01), Kumagai et al.
patent: 4876158 (1989-10-01), Onuki et al.
patent: 5076866 (1991-12-01), Koike et al.
patent: 5154433 (1992-10-01), Naruse
English Abstract for Japanese '551, Oct. 1985.
William F. Smith: "Structure and Properties of Engineering Alloys", 1981, pp. 256-257, 260, 411, 438-439, 449-451.

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