纳米组织锆合金氧化过程中ZrO2晶粒生长特性  

Characteristic of ZrO_2 Grain Growth during Oxidation in Nanocrystalline Zr-4

作　　者：张喜燕[1] 李聪[1] 邱绍宇 石明华[3] 张鹏程 韦以明[1] 

机构地区：[1]重庆大学,重庆400044 [2]中国核动力设计研究院核燃料及材料国家级重点实验室,四川成都610041 [3]西北有色金属研究院,陕西西安710016 [4]表面物理与化学国家重点实验室,四川绵阳621000

出　　处：《稀有金属材料与工程》2008年第1期112-114,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50461001);核材料与燃料国家级重点实验室基金(514810501)资助

摘　　要：研究了673K,10.3MPa条件下纳米锆合金氧化膜中ZrO2晶粒尺寸长大规律。结果表明,在纳米结构基底上形成的ZrO2,晶粒尺寸均小于在粗晶基底上所形成的ZrO2晶粒尺寸;在纳米结构基底上形成的ZrO2晶粒长大速率小于在粗晶基底上所形成的ZrO2晶粒长大速率。组织纳米化促进了更小尺寸ZrO2的形成,影响了ZrO2晶粒长大动力学过程。In this paper the characteristic of ZrO2 grain growth during the oxidation in nanocrystalline Zr-4 under 673 K/10.3 MPa conditions was studied. The results show that the grain size and grain growth rate of ZrO2 which formed on the nanostructure basis were smaller than that of ZrO2 formed on the coarse grain basis. So the nanocrystalline treatment leads to fine grain of ZrO2 and has influence on the oxidation dynamics of zircaloy-4

关 键 词：锆合金 腐蚀 纳米结构金属 晶体长大 X射线 

分 类 号：TB383.1[一般工业技术—材料科学与工程]