Sliding member of graphite-metal borides

Details Sliding member of graphite-metal borides Sliding member of graphite-metal borides

1985-11-04

1988-01-19

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

252 29, 252 30, 501 96, 501 99, F16C 3316

Patent

active

047203498

ABSTRACT:
Disclosed herein is a high temperature-resistant and abrasion-resistant sliding member of graphite-metal borides showing a friction coefficient of 0.01 to 0.09 and a specific amount of abrasion of 1.0 to 4.0.times.10.sup.-8 mm.sup.2 /kg under the measuring conditions of a load of 20 kg/cm.sup.2 and a sliding velocity of 5 m/min at an atmosphere temperature of 300.degree. C., a bending strength of 230 to 900 kg.f/cm.sup.2 and a Shore hardness of 28 to 45, produced by sintering (a) 70 to 93% by weight of amorphous carbon powder, (b) 5 to 20% by weight of at least one boride of a metal of IVa group, Va group of VIa group of the periodic table and (c) 2 to 10% by weight of powdery natural graphite, powdery Kish graphite or a mixture thereof.

REFERENCES:
patent: 3405063 (1968-10-01), Boes et al.
patent: 3770487 (1973-11-01), Cabsin et al.
patent: 4259119 (1981-03-01), Watanabe et al.
patent: 4637884 (1987-01-01), Miyazaki et al.

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