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:
Nov. 27, 2012
Filed:
Aug. 13, 2007
Lars Hallstadius, Vasteras, SE;
Mats Dahlback, Vasteras, SE;
Lars Hallstadius, Vasteras, SE;
Mats Dahlback, Vasteras, SE;
Westinghouse Electric Sweden AB, Vasteras, SE;
Abstract
A water reactor fuel cladding tube () is described. The tube () comprises an outer layer () of a first zirconium based alloy and has metallurgically bonded thereto an inner layer () of a second zirconium based alloy. The inner layer protects () the cladding tube () against stress corrosion cracking. The second zirconium based alloy comprises tin as an alloying material, and each one of the zirconium based alloys comprises at least 96 percent by weight zirconium. The first zirconium based alloy comprises at least 0.1 percent by weight niobium. A method of manufacturing the cladding tube () is also described and comprises the step of co-extruding two tubes of different zirconium based alloys to produce the cladding tube ().