Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1995-09-27
1997-05-06
Wyszomierski, George
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75368, 75369, 75636, B22F 924
Patent
active
056266456
ABSTRACT:
A process for making silver metal particles from silver salt particles having the same morphology. Precursor silver salt particles selected from the group consisting of silver acetate and silver sulfide having a selected morphology are contained in a reactor vessel having means for supporting the particles in an air suspension to prevent the agglomeration of the particles. Air is flowed through the reactor vessel at a flow rate sufficient to suspend the particles in the reactor vessel. The suspended precursor silver salt particles are heated to a processing temperature and at a heating rate below which the physical deterioration of the suspended precursor silver salt particles takes place. The suspended precursor silver salt particles are maintained at the processing temperature for a period of time sufficient to convert the particles into silver metal particles having the same morphology as the precursor silver salt particles.
REFERENCES:
patent: 2758021 (1956-08-01), Drapeau et al.
patent: 3877931 (1975-04-01), Neskora et al.
patent: 3940261 (1976-02-01), Dannelly et al.
patent: 4883559 (1989-11-01), Bamberger
patent: 4994107 (1991-02-01), Flagan et al.
patent: 5118488 (1992-06-01), Bamberger
patent: 5188660 (1993-02-01), Tosun et al.
patent: 5389122 (1995-02-01), Glicksman
patent: 5439502 (1995-08-01), Kodas et al.
Bamberger, The pseudomorphic conversion of acicular crystals of sodium tuten bronze into WC/W,J. of Mats. Sci. Let. 13(1994) 1742-1745.
Bamberger, et al, Acicular crystals of sodium tungsten bronzes, Journal of Crystal Growth 131 (1993) 473-480.
Silber, Gmelins Handbuch der Anorganishen Chemie, A2;61, (1970) pp. 67, 157-159.
Ohachi, et al, The Growth and Morphology of Silver Whiskers, Journal of Crystal Growth, 24/25 (1974) pp. 362-366.
Varleva, et al, The Growth of Silver Whiskers by Reduction of Silver Halogenides, Cryst. Res. Technol. 28 (1993) pp. 441-448.
Silber, Gmelins Handbuch der Anorganischen, Chemie, 61; B5 (1975) pp. 121-135, 139-142.
Bamberger, Preparation of Silver Filaments (unpublished manuscript) submitted for publication Dec. 1994, accepted for publication May 1995 in Journal of Materials Science Letters.
Hamel Stephen D.
Moser William R.
Schneider Emily G.
The United States of America as represented by the Department of
Wyszomierski George
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