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目前,水堆中比较成熟的包壳材料和结构材料是锆—2和锆—4合金。锆—2,锆—4均是西屋公司和矿业局共同研制出来的。锆—2已有二十多年的研究历史、锆—4是在锆—2的基础上发展起来的。锆—2主要用于沸水堆;锆—4则多用于压水堆。据不完全统计,截止1971年年底,世界上业已运转的沸水堆电站数目约为92座,用锆—2作包壳材料的有81座,占88%强;压水堆的情况是,截止1975年年底,世界上
At present, the relatively mature cladding materials and structural materials in water reactors are zirconium-2 and zirconium-4 alloys. Zirconium -2, zirconium -4 are Westinghouse and Mining jointly developed. Zirconium -2 has been more than two decades of research history, zirconium-4 is developed on the basis of zirconium-2. Zirconium-2 is mainly used for boiling water reactor; zirconium-4 is used for pressurized water reactor. According to incomplete statistics, as of the end of 1971, the number of operated boiling water reactor plants in the world was about 92, with 88 using zirconium-2 as cladding material, accounting for 88% of the total; and pressurized water reactors were deadlines The end of 1975, the world