Method of making fine silver powder

Details Method of making fine silver powder Method of making fine silver powder

1983-05-05

1984-06-26

Lewis, Michael L.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75109, B22F 900

Patent

active

044564740

ABSTRACT:
Silver powder of high purity having a particle size within the range from 0.6 to 2.5 micrometers in diameter is made by providing a reaction mixture comprising a solution of hydrazine in deionized water containing excess ammonium hydroxide, spraying into the reaction mixture a solution of silver nitrate in deionized water, and adjusting concentrations and ratios of ingredients within limits to obtain a selected particle size within the range.

REFERENCES:
patent: 2796343 (1957-06-01), Shaw et al.
patent: 3334995 (1967-08-01), Gaspar
patent: 3369886 (1968-02-01), Metzger et al.
patent: 3390981 (1968-07-01), Hoffman
patent: 3427153 (1969-02-01), Venkatesan et al.
patent: 3620713 (1971-11-01), Short
patent: 3694254 (1972-09-01), Blumenthal

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