Zirconium alloy,申请号EP19950307858-传众专利搜索

Zirconium alloy

申请公布号：EP0712938(A1)

申请号：EP19950307858

申请日期：1995.11.03

申请公布日期：1996.05.22

申请人：

GENERAL ELECTRIC COMPANY

发明人：TAYLOR, DALE FREDERICK

分类号：C22C16/00;G21C3/07;G21C3/20

主分类号：C22C16/00

摘要：A zirconium-based alloy with a reduced alloy content is described that has resistance to both uniform and nodular corrosion comparable to present zirconium-based alloy compositions, such as Zircaloy-2. The alloy represents in essence a modified or diluted Zircaloy-2 or Zircaloy-4. The alloys of this invention are also expected to have improved uniform corrosion resistance at under high burn-up conditions The alloy comprises 0.05-0.09 weight percent of iron, 0.03-0.05 weight percent of chromium, 0.02-0.04 weight percent of nickel, 1.2-1.7 weight percent of tin and 0-0.15 weight percent oxygen, with a balance of zirconium. The iron chromium and nickel alloying elements form precipitates in the alloy matrix. The alloy is suitable for use as a cladding material for a fuel element housing fissionable nuclear materials in water cooled nuclear fission reactor. These alloys can also be formed with a reduced nitrogen content of no more than 20 parts per million nitrogen by weight in order to provide enhanced resistance to nodular corrosion. <IMAGE>