Friction-reducing coating compositions and coated machine part

Details Friction-reducing coating compositions and coated machine part Friction-reducing coating compositions and coated machine part

1986-04-28

1988-07-12

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

75240, 75251, 75252, C10M10304

Patent

active

047568410

ABSTRACT:
Friction-reducing coating compositions and coated machine parts having a wearing surface provided with coatings of same. In one embodiment, the coating composition includes from 10 to 25 weight % molybdenum metal; from 55 to 70 weight % nickel alloy; and from 5 to 25 weight % chromium carbide Cr.sub.3 C.sub.2. In a second embodiment, the coating composition includes from 25 to 45 weight % molybdenum metal; from 45 to 60 weight % nickel alloy; and from 5 to 25 weight % of a hard substance selected from chromium metal, chromium carbide Cr.sub.23 C.sub.6 and molybdenum carbide Mo.sub.2 C. Preferably the nickel alloys contain from 73 to 95 weight % nickel and have a melting point below that of nickel metal. Preferably the friction-reducing coating is applied to a wearing surface by plasma flame spraying. These coatings impart excellent wear resistance to the wearing surface, while lowering wear of counter-running faces.

REFERENCES:
patent: 3556747 (1971-01-01), Hyde et al.
patent: 4334927 (1982-06-01), Hyde et al.
patent: 4597939 (1986-07-01), Neuhauser et al.

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