Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1978-07-06
1979-10-30
Stallard, W.
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
241 15, 241 30, 241 4615, B02C 1716, B02C 2316
Patent
active
041727207
ABSTRACT:
The disclosure describes a method of making flaked metal powders having a narrow particle size distribution, a whiter color and a very high sparkle effect. A heterogeneous liquid system comprising an inert liquid and a lubricant and including a finely divided metal is subjected to attrition in an enclosure in which there are a plurality of attritive elements. An agitator is moved through the elements to displace those in its path. In this method, the weight ratio of attritive elements to finely divided metal is between 70:1 and 90:1, the weight ratio of finely divided metal to lubricant is between 100:1 to 20:1 and the weight ratio of inert liquid to finely divided metal is between 0.5:1 to 2.5:1. Flaked Al, Cu, brass, stainless steel, nickel, cupro nickel powders and the like are obtained by this method.
REFERENCES:
patent: 2002891 (1935-05-01), Hall
patent: 3008656 (1961-11-01), Weston
patent: 3238048 (1966-03-01), Somers
patent: 3295766 (1967-01-01), Tveter
patent: 3322582 (1967-05-01), Morana
patent: 3353753 (1967-11-01), Wolfgram
patent: 3360203 (1967-12-01), Smoke et al.
patent: 3934825 (1976-01-01), Delfosse et al.
patent: 3995815 (1976-12-01), Megelas
Stallard W.
United States Bronze Powders, Inc.
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