Bearing members having coated wear surfaces

Details Bearing members having coated wear surfaces Bearing members having coated wear surfaces

1974-02-15

1976-02-03

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

291912, 29195, 277235R, 277216, 427 34, C23C 700, B22F 102

Patent

active

039362957

ABSTRACT:
The invention comprises bearing members having a coated wear surface applied by plasma-spraying an aggregate of particles thereon consisting of nickel-aluminum particles, nickel-molybdenum particles, tungsten carbide particles, and intermetallic alloy particles to form a high temperature, oxidation resistant, wear resistant, and scuff resistant coating. Alloying of the constituents in the final coating is desired and is achieved by encapsulating both the aluminum and molybdenum particles with nickel (alternatively the nickel-aluminum may be in the form of a bonded aggregate), by sintering the tungsten carbide in a matrix of cobalt, and by alloying nickel-cobalt, carbon, silicon, chromium, boron, and iron into an intermetallic alloy to form an aggregate of four types of particles for plasma-spraying onto the wear surface.

REFERENCES:
patent: 3539192 (1970-11-01), Prasse
patent: 3556747 (1971-01-01), Hyde et al.
patent: 3606359 (1971-09-01), McCormick
patent: 3615099 (1971-10-01), Prasse
patent: 3837817 (1974-09-01), Nakamura

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