Process for preparing metal powder

Details Process for preparing metal powder Process for preparing metal powder

1997-09-23

1999-10-12

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75368, 75369, B22F 924

Patent

active

059649186

ABSTRACT:
A process for preparing a metal powder, comprising the steps of: bringing a solution comprising at least one metal salt to fine droplets; and heating the droplets to a temperature above the decomposition temperature of the metal salt, wherein at least one compound which is heat-decomposable to produce a metal, a semimetal or an oxide of the metal or semimetal capable of remaining unmelted upon heating at the heat temperature is added to the solution and at least one selected from the group consisting of the metal, semimetal and oxide is heat-segregated in the vicinity of the surface of the metal powder. The resultant metal powder has a uniform particle size and good dispersibility without fusing or aggregation and is useful for the preparation of thick film pastes used in electronic circuits or components.

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patent: 4748737 (1988-06-01), Charles et al.
patent: 4960647 (1990-10-01), Grundy
patent: 5402305 (1995-03-01), Asada et al.
patent: 5429657 (1995-07-01), Glicksman et al.
patent: 5439502 (1995-08-01), Kodas et al.

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