Process for the production of fine powder

Details Process for the production of fine powder Process for the production of fine powder

1992-04-02

1993-10-05

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

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

75722, 423592, 502339, B22F 924

Patent

active

052501019

ABSTRACT:
A process for the production of a fine powder suitable for use in the fields of electronic materials, catalysts, powder metallurgy, pigments and adsorbens. The powder has a primary particle diameter of not more than 0.5 .mu.m, an average secondary aggregate particle diameter of not more than 10 .mu.m and a secondary aggregate particle specific surface area of 2 to 250 m.sup.2 /g, and is produced by a process comprising heating an organic acid metal salt in the presence of palladium, which lowers the thermal decomposition temperature of the salt, at a temperature elevation rate of 0.5.degree. to 20.degree.C./minute and thermally decomposing the organic acid metal salt in the presence of the palladium in the temperature range of not higher than 400.degree.C.

REFERENCES:
patent: 5030608 (1991-07-01), Schubert et al.
Armor et al., Materials Letters, vol. 4, No. 8-9, Aug. 1986, pp. 373-376.
Meguro et al., Patent Abstracts of Japan, vol. 15, No. 39, (M-1075) Jan. 30, 1991 JP-A-2 277 706.

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