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:
Jul. 15, 1980
Filed:
Mar. 03, 1978
Liv Lunde, Nittedal, NO;
Raymond C Asher, Newbury, GB;
Gerard Slattery, Leatown, Nr. Preston, GB;
Frank W Trowse, Preston, GB;
Christopher Tyzack, Hale Barns, GB;
Gustaf C stberg, Stockholm, SE;
Erich Tolksdorf, Nieder-Roden-Rollwald, DE;
AB Atomenergi, Nykoping, SE;
Atomenergikommissionen, Copenhagen, DK;
Institutt for Atomenergi, Kjeller, NO;
United Kingdom Atomic Energy Authority, London, GB;
Valtion Teknillinen Tutkimuskeskus, Helsinki, FI;
Abstract
The present invention concerns improved corrosion resistant zirconium alloys consisting of 0.25 to 1.50% by weight of niobium, 0.025 to 0.20% by weight of tin, 0.02 to 1.00% by weight of combined chromium and molybdenum, and the remainder zirconium except for unavoidable impurities. Corrosion tests show that the above alloys have a corrosion rate comparable to Zircaloy 2 at low temperatures and a much better performance at high temperatures. Further the hydrogen uptake of the present alloys are considerably lower than for Zircaloy 2 over the whole temperature range 290.degree.-500.degree. C., and reactor tests have revealed that the good corrosion behavior is maintained under neutron irradiation. The new alloys exhibit smaller grain growth than Zircaloy 2 at annealing temperatures.