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. 07, 2005
Filed:
Jul. 09, 2002
Yong Hwan Jeong, Daejeon, KR;
Jong Hyuk Baek, Daejeon, KR;
Byoung Kwon Choi, Daejeon, KR;
Sang Yoon Park, Daejeon, KR;
Myung Ho Lee, Daejeon, KR;
Cheol Nam, Daejeon, KR;
Jeong Yong Park, Daejeon, KR;
Youn Ho Jung, Daejeon, KR;
Yong Hwan Jeong, Daejeon, KR;
Jong Hyuk Baek, Daejeon, KR;
Byoung Kwon Choi, Daejeon, KR;
Sang Yoon Park, Daejeon, KR;
Myung Ho Lee, Daejeon, KR;
Cheol Nam, Daejeon, KR;
Jeong Yong Park, Daejeon, KR;
Youn Ho Jung, Daejeon, KR;
Korea Atomic Energy Research Institute, Daejeon, KR;
Korea Hydro & Nuclear Power Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a method for manufacturing zirconium-based alloys containing niobium with superior corrosion resistance for use in nuclear fuel rod claddings. The method of this invention comprises melting of the alloy, β-forging, β-quenching, hot-working, vacuum annealing, cold-working, intermediate annealing and final annealing, whereby the niobium concentration in the α-Zr matrix decreases from the supersaturation state to the equilibrium state to improve the corrosion resistance of the alloy. Such zirconium-based alloys containing niobium are usefully applied to nuclear fuel rod cladding of the cores in light water reactors and heavy water reactors.