Process for producing copper fine powder

Details Process for producing copper fine powder Process for producing copper fine powder

1990-09-11

1992-03-10

Roy, Upendra

Specialized metallurgical processes, compositions for use therei

Processes

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

75373, 419 8, B22F 930

Patent

active

050946862

ABSTRACT:
A process for producing a copper fine powder, which comprises thermally decomposing anhydrous copper formate in a solid phase in a non-oxidizing atmosphere at a temperature in the range of from 150.degree. to 300.degree. C., thereby yielding a copper fine powder having a primary particle diameter of from 0.2 to 1 .mu.m, a specific surface area of from 5 to 0.5 m.sup.2 /g and small agglomerating properties, said anhydrous copper formate being an anhydrous copper formate powder 90 wt % or more of which undergoes thermal decomposition within a temperature range of from 160.degree. to 200.degree. C. when the anhydrous copper formate powder is heated in a nitrogen or hydrogen gas atmosphere at a heating rate of 3.degree. C./min.

REFERENCES:
patent: 3177077 (1965-04-01), Eyraud et al.
Khimchenko et al., Sov. Powder Met. & Met. Cer. 22 (5) 1983, p. 325.
Khimchenko et al. Sov. Powder Met. & Mer. Cer. 16 (5) 1977, p. 323.
Chemical Abstracts, vol. 87, No. 10, Oct. 5, 1977, Abstract No. 71967c.

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