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:
May. 18, 1976
Filed:
Aug. 02, 1974
Applicant:
Inventors:
Gregory K Rasmussen, Grand Blanc, MI (US);
John Hrinevich, Jr, Flint, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ; C22C / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
29182 ; 291822 ; 7512 / ; 75170 ; 7517 / ; 75176 ; 75200 ; 75224 ;
Abstract
Ductile ruthenium alloys are provided by mixing, by weight, about 75-85% ruthenium powder with about 15-25% of a pre-alloyed powder consisting essentially of nickel, chromium, tungsten, silicon and iron, the powders being of less than 200 mesh size, the mixture being blended with a binder to enable easy handling in pressing a green part using pressures of from about 35,000-50,000 psi followed by sintering in dry hydrogen or inert gas or in a vacuum, sintering temperature and time ranging from about 2050.degree. to about 2150.degree. F for periods of from about 45 minutes to about 30 minutes, respectively.