摘要
利用覆膜法对长期贮存氚的LaNi5进行了XRD分析。经过实验发现,老化后的LaNi5的谱峰比新鲜的LaNi5存在明显的展宽,而经过高温除He处理后,又恢复到新鲜的LaNi5水准,氚衰变形成的3He在晶格中居留并在其中形成部分位错亚结构,这可能是导致LaNi5XRD衍射峰宽化的主要原因。
The crystal structure of LaNi5 alloy after longterm storage of tritium was investigated by means of X-ray diffraction （XRD）. The results show broadened peaks on the XRD spectra of the specimens compared with that of the as-received ones, indicating clear aging effects of the alloy. The main reason causing the aging effects of the alloy is likely due to the tritium produced ^3 He, which might induce dislocation sub-structures in the crystal. The alloy shows the ability to be near fully recovered through high temperature treatment.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2009年第4期250-252,共3页
Journal of Nuclear and Radiochemistry
