Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1978-09-25
1980-03-04
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 05AA, 75 05AB, 75109, C22B 1304, C22B 2304, C22B 2504, C22B 3432
Patent
active
041915577
ABSTRACT:
The process of producing a metallic powder from a metal compound such as nickel chloride comprising the steps of: first forming a slurry of (1) a compatible, non-aqueous liquid in which the metal compound is completely or partially soluble, and (2) a reactive metal which occupies a position in the electromotive series above the position of the metal constituent in the metal compound, i.e. has a single electrode potential more negative than that of the metal constituent in the metal compound. The metal compound is then added to the solvent in the slurry, e.g. forming a slurry of pyrophoric aluminum powder in methyl ethyl ketone (MEK) and then adding nickel chloride to the MEK. The reactive metal can be in a pyrophoric state prior to introduction of the metal compound, or it can be made to be pyrophoric in the presence of the metal compound, so that it reduces the metal constituent of the dissolved metal compound as metal compound solution contacts the pyrophoric metal surface. For example, aluminum powder can be made sufficiently reactive by milling to produce pyrophoric surfaces. Alternatively, if the metal compound is a liquid, e.g. stannic chloride, a part or all of the carrier liquid needed to slurry the potentially pyrophoric reactive metal may be eliminated.
REFERENCES:
patent: 860661 (1907-07-01), Hendryx
patent: 2934478 (1960-04-01), Schickner
patent: 3136621 (1964-06-01), Pearson
patent: 3165397 (1965-01-01), Lobo
patent: 3607675 (1971-09-01), Haines
patent: 3616280 (1971-10-01), Arnold
patent: 3697398 (1972-10-01), Wessling et al.
patent: 3701650 (1972-10-01), Zeeuw
patent: 3772170 (1973-11-01), Bharucha
patent: 3853931 (1974-10-01), Kondis
patent: 3874940 (1975-04-01), Vera et al.
patent: 3877932 (1975-04-01), Elges
patent: 3890166 (1975-06-01), Kondis
patent: 3902896 (1975-09-01), Borbely et al.
patent: 4097313 (1978-06-01), Tokuoka et al.
patent: 4119699 (1978-10-01), Kellerwessel et al.
Langes Handbook of Chemistry, pp. 1244-1249 (1952).
Aluminum Company of America
Lewis Michael L.
Rutledge L. Dewayne
Sullivan Jr. Daniel A.
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