Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1999-09-13
2000-12-05
Mai, Ngoclan
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75348, 75371, 75374, B22F 918
Patent
active
061560944
ABSTRACT:
A method for producing metal powder which involves the step of making an alkaline hydroxide, hydrazine or a hydrazine hydrate, and a metallic salt co-exist in a solvent comprising an alcohol, at least a portion of each being dissolved; wherein, in the step, metal powder comprising a metal contained in the metallic salt is precipitated by reducing the metallic salt with the hydrazine or the hydrazine hydrate. By the above method, a metal powder having a particle size of about 100 nm or less can be obtained and the metal powder is not contaminated with impurities originating from the reducing agent.
REFERENCES:
patent: 3679398 (1972-07-01), Geus
patent: 3708313 (1973-01-01), Short
patent: 4089676 (1978-05-01), Grundy
patent: 4101311 (1978-07-01), Aonuma et al.
patent: 4456473 (1984-06-01), Jost
patent: 4456474 (1984-06-01), Jost
patent: 4721524 (1988-01-01), Sheldon et al.
patent: 5413617 (1995-05-01), Lin et al.
Patent Abstracts of Japan; vol. 12, No. 374 (M-749); Oct. 6, 1988 & JP 63-125605 A (Daido Steel Co., Ltd); May 28, 1988; Abstract.
Chemical Abstracts; vol. 120, No. 2; Jan. 10, 1994; Columbus, Ohio, U.S.; Abstract No. 12280; Zavodna, Ivana,et al.; "Platinum recovery from waste solutions and suspensions"; XP002126501; Abstract & CS 275 580 B (Lachema S.P. Czech.)
Patent Abstracts of Japan; vol. 016, No. 284 (M-1270); Jun. 24, 1992 & JP 04 074810 A (Agency of Ind. Science & Technol.) Mar. 10, 1992; Abstract.
Mai Ngoclan
Murata Manufacturing Co. Ltd.
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