Method of making metal composite powders

Details Method of making metal composite powders Method of making metal composite powders

1995-03-29

1996-06-25

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

427226, 4273833, 4274431, 419 10, 419 13, 419 14, 419 18, 419 35, B05D 700

Patent

active

055298044

ABSTRACT:
A process for the production of hard materials wherein hard constituent powders are coated with cobalt and/or nickel metal in solution by reducing the metals from a suitable compound such as an oxide, hydroxide or salt with a polyol while keeping the powder in suspension. The polyol functions both as a solvent and a reducing agent at the same time and is present in an amount of at least 5 times more moles polyol than moles metal. There is obtained an even distribution of the cobalt and/or nickel over the surface of the hard constituent powder without the formation of islands of pure metal.

REFERENCES:
patent: 4268536 (1981-05-01), Beckenbaugh et al.
patent: 4539041 (1985-09-01), Figlarz et al.
patent: 4770907 (1988-09-01), Kimura

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