一、前言锆4合金是为了改善锆2的吸氢性能而发展出来的,由锆2合金中去掉镍,适当增加铁含量即成为锆4合金,因此锆2锆4无论从成分还是从性能方面看都是基本相似的。但锆4吸氢速率只有锆2的1/2～1/3。因此近年来在国外的压水堆上,锆4完全取代 First, the introduction of zirconium alloy 4 is to improve the hydrogen absorption performance of zirconium 2 developed from the zirconium 2 alloy nickel removed, the appropriate increase in iron content that is zirconium 4 alloy, zirconium 2 zirconium 4 in terms of composition or from the performance Look is basically similar. However, the rate of hydrogen absorption of zirconium 4 zirconium 2 only 1/2 ~ 1/3. Therefore, in recent years abroad, pressurized water reactor, zirconium 4 completely replaced