Method of producing fine powders

Details Method of producing fine powders Method of producing fine powders

1994-06-09

1995-07-25

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

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

75371, 423510, B22F 924

Patent

active

054358302

ABSTRACT:
First, an aqueous solution of water soluble compounds or an aqueous solution of water soluble complexes, which is a salt of elements belonging to the 6A, 7A, 1B, 2B, 3B, 4B, 5B, 6B, or 8 group in a periodic table are prepared. The pH of the aqueous solution is adjusted and titanium trichloride is added thereto. The aqueous solution provided with titanium trichloride is stirred at temperature below the boiling point of the solution under atmospheric pressure or under high pressure. Then, by the reducing action of the titanium trichloride, a fine titanium-free powder selected from the group consisting of a metal powder, an alloy powder containing two or more of metals and non-metals, or a compound powder containing two or more of metals and non-metals is obtained.

REFERENCES:
patent: 4217152 (1980-08-01), Aonuma et al.
patent: 4445931 (1984-05-01), Worthington
patent: 4803291 (1984-02-01), Rousset et al.

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