Effect of surface nanocrystallization on the corrosion behavior of Zircaloy-4

作     者：ZHU YuTao1,2 & ZHANG XiYan1,2,3 1 College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China 2 National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China 3 School of Physical Science and Engineering Technology, Guangxi University, Nanning 530004, China 

作者机构：College of Materials Science and Engineering Chongqing University National Engineering Research Center for Magnesium Alloys Chongqing University 3School of Physical Science and Engineering Technology Guangxi University 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2009年第52卷第8期

页      面：2227-2231页

核心收录：

学科分类：0810[工学-信息与通信工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 50461001) Guangxi Science and Technology Fund (Grant Nos. 0575-18, 0639003) Science Fund of Guangxi University (Grant No. 2005ZD04) 

主　　题：nanocrystalline Zircaloy oxide film microstructure 

摘      要：The contrastive corrosion experiments between surface nanocrystallined Zircaloy-4 and coarse-grained Zircaloy-4 under the condition of 673 K/10.3 MPa in pure water are carried out, and the microstructure of oxide films has been studied. The results indicate that the growth rate of oxide films formed on the nanocrystalline Zircaloy-4 is lower than that of oxide films formed on the coarse-grained Zircaloy-4. Simultaneously, the oxide/metal interface of the former is more regular and glossy than that of the latter. For nanocrystalline Zircaloy-4, the low oxygen diffusion rate through the oxide/metal interface can hinder the reaction of oxygen ion with metal ion. Furthermore, more tetragonal ZrO2 are observed in the oxide films, which can delay the martensite phase transition from tetragonal to monoclinic phase in oxide films.