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:
Jun. 06, 2000
Filed:
Mar. 15, 1996
Yutaka Koizumi, Tsukuba, JP;
Yoko Yamabe, Tsukuba, JP;
Yoshikazu Ro, Tsukuba, JP;
Tomohiro Maruko, Tsukuba, JP;
Shizuo Nakazawa, Tsukuba, JP;
Hideyuki Murakami, Tsukuba, JP;
Hiroshi Harada, Tsukuba, JP;
National Research Institute For Metals, Ibaraki, JP;
Abstract
Refractory superalloys consist essentially of a primary constituent selected from the group consisting of iridium, rhodium, and a mixture thereof, and one or more additive elements selected from the group consisting of niobium, tantalum, hafnium, zirconium, uranium, vanadium, titanium and aluminum, and the superalloys having a microstructure containing an FCC-type crystalline structure phase and an L1.sub.2 -type crystalline structure phase are precipitated. Preferably the amount of additive element(s) is 2 to 22 atom %.