原子能科学技术2018，Vol.52Issue(3)：385-389,5.DOI:10.7538/yzk.2017.youxian.0312
纯铝中氦泡分布特点的研究
Study on Distribution Characteristics of Helium Bubble in Aluminum
摘要
Abstract
The industrial pure aluminum was implanted by He ion with the dose of 3 × 1020 m 2 in the injection energy of 500 keV.The SRIM software was carried to simulate and predict the highest He atom concentration located at the position,and the position is 1.8 μm away from the surface.The sample with He ion implantation was aged for 192 h at 190 ℃ to promote the nucleation and growth of helium bubbles.Distribution of helium bubbles in the depth was observed by transmission electron microscope (TEM).The TEM results show that the highest helium atom concentration is at the position of 1.8μm away from the surface,which is accord with the results by SRIM software.It is found that the size of helium bubbles formed on the grain boundary is larger than that formed in grain,which indicates that the grain boundary is beneficial to the formation and growth of helium bubbles.At the same time,there exist large differences about the size of helium bubbles in different grains beside the same grain boundary,which shows that grain orientation may have a significant influence on coalescence and growth process of helium bubbles.关键词
氦泡/SRIM模拟/晶粒取向Key words
helium bubble/SRIM simulation/grain orientation分类
能源科技引用本文复制引用
程扬名,陈浩,沈琴,李彤,刘文庆..纯铝中氦泡分布特点的研究[J].原子能科学技术,2018,52(3):385-389,5.基金项目
国家自然科学基金-中国工程物理研究院NSAF联合基金资助项目(U1530115) （U1530115）
国家重点研发计划资助项目(2016YFB0700401) （2016YFB0700401）
