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:
Dec. 02, 1980
Filed:
Jan. 12, 1979
Murray Robbins, Berkeley Heights, NJ (US);
Annemarie Staudinger, Chatham, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
In the process of producing metal alloy parts by the reduction of powder metal oxide compacts, it has been discovered that single phase alloy parts may be produced by an agglomerated mixture of metal oxides without a separate annealing step. The metal oxide mixture is formed into agglomerates by spray drying a solution of metal salts which are subsequently decomposed, or other techniques, compacted to the desired shape, and then reduced in a hydrogen atmosphere at high temperature. In the case of alloys that would otherwise segregate, a quenching step follows the reduction of the metal oxide shape. As only oxides are involved prior to reduction, problems with surface oxidation are avoided. A sintering step in air can be used to give the oxide compact structural integrity before reduction.