The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 1980
Filed:
Sep. 25, 1978
Thomas J Kondis, Pittsburgh, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
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.