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:
Oct. 28, 2008
Filed:
Mar. 27, 2003
Jun Takada, Okayama, JP;
Masahiro Nagae, Okayama, JP;
Makoto Nakanishi, Okayama, JP;
Tomohiro Takida, Toyama, JP;
Tetsushi Hoshika, Okayama, JP;
Jun Takada, Okayama, JP;
Masahiro Nagae, Okayama, JP;
Makoto Nakanishi, Okayama, JP;
Tomohiro Takida, Toyama, JP;
Tetsushi Hoshika, Okayama, JP;
Japan Science and Technology Agency, Kawaguchi-shi, JP;
National University Corporation Okayama University, Okayama-shi, JP;
A.L.M.T. Corp., Tokyo, JP;
Abstract
The present invention provides a worked molybdenum-alloy material that can be used at higher temperatures than at least temperatures at which known TZM alloys are used. A worked molybdenum-alloy material having high strength and high toughness includes at least one of carbide particles, oxide particles, and boride particles and fine nitride particles dispersed by internal nitriding of an untreated worked molybdenum-alloy material in which a nitride-forming-metal element is dissolved to form a solid solution in a molybdenum matrix and at least one of carbide particles, oxide particles, and boride particles is precipitated and dispersed. The worked molybdenum-alloy material is manufactured by subjecting a worked alloy material, which has a matrix composed of molybdenum, in which at least one of carbide particles, oxide particles, and boride particles is precipitated and dispersed and in which at least one of titanium, zirconium, hafnium, vanadium, niobium, and tantalum is dissolved to form a solid solution, to multi-step internal nitriding treatment including a stepwise increase of the treatment temperature.