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:
Aug. 22, 1978
Filed:
Dec. 02, 1976
Marcel Armand, Albertville, FR;
Daniel Charquet, Albertville, FR;
Ugine Aciers, Paris, FR;
Abstract
A method for treating zirconium and zirconium alloys, in particular the zirconium alloys used in nuclear reactors which are water cooled, as a structural or casing material for fuels. The method consists in dissolving or maintaining a solid solution of the majority of carbon contained in these alloys by thermal or thermo-mechanical treatments carried out in the .alpha. + .beta. range or if necessary in the .beta. range followed by a rolling in .alpha. phase if necessary. The products obtained have a highly improved mechanical resistance under heat, in particular with regard to resistance to creep; they are particularly suitable for constructing casing tubes for fuels in water cooled nuclear reactors having a better resistance to distortion in relation to time.