摘要
利用中子衍射和中子非弹性散射方法对ＬａＮｉ＿３经氢化和脱氢所引起的相转变过程进行了研究。结果表明：１．ＬａＮｉ＿３在室温和４ＭＰａ（４０Ｈ＿２ａｔｍ）下氢化产生的氢化样品ＬａＮｉ＿３Ｈ＿ｘ，已经从原来的晶态（ＬａＮｉ＿３）转变为带有少量ＬａＮｉ＿５微晶的不定形态；２．ＬａＮｉ＿３Ｈ＿ｘ在６００℃下经约１０ｍｉｎ脱氢后形成的脱氢样品，已从非晶态（ＬａＮｉ＿３Ｈ＿ｘ）转变为由ＬａＮｉ＿５Ｈ＿ｙ和ＬａＨ＿（２．６）所组成的新晶态。
The phase transformation of LaNi_3 induced by hydriding and dehydriding is investigated us-ing the neutron diffraction and the neutron inelastic scattering. The results show that the hydrid-ing sample, LaNi_3H_x,is transformed from crystalline state of the LaNi_3 into amorphous state witha microcrystalline characteristic of LaNi_5,and the dehydriding sample produced by LaNi_3H_x dehy-drided at 600℃ is decomposed into new crystalline states composed by LaNi_5-and La -hydrides.The procedure of phase transformation is that the result of the transformation of LaNi_3 induced byhydriding shows the properties of LaNi5_-H_2 system.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1994年第2期109-112,共4页
Atomic Energy Science and Technology
基金
国家科学基金
关键词
非弹性散射
氢化
相变
贮氢材料
Inelastic scattering Hydriding Phase transformation Crystalline state The Project supported by National Science Foundation
