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金属学报  1988, Vol. 24 Issue (2): 189-193    
  论文 本期目录 | 过刊浏览 |
用核磁共振方法研究氢在LaNi_5,LaNi_4Cu,LaNi_4Fe晶格中的运动
周达明;侯磊;金庆华;郭振亚;丁大同
南开大学物理系;南开大学;南开大学;南开大学;南开大学
AN NMR STUDY OF HYDROGEN MOTION IN LaNi_5, LaNi_4Cu AND LaNi_4Fe LATTICES
ZHOU Daming Department of physics;Nankai University;Tianjin;HOU Lei;JIN Qinghua;GUO Zhenya;DING Datong Nankai University; Tianjin
引用本文:

周达明;侯磊;金庆华;郭振亚;丁大同. 用核磁共振方法研究氢在LaNi_5,LaNi_4Cu,LaNi_4Fe晶格中的运动[J]. 金属学报, 1988, 24(2): 189-193.
, , , , . AN NMR STUDY OF HYDROGEN MOTION IN LaNi_5, LaNi_4Cu AND LaNi_4Fe LATTICES[J]. Acta Metall Sin, 1988, 24(2): 189-193.

全文: PDF(415 KB)  
摘要: 本文首先报道LaNi_5·H_6中~1H核磁共振连续波观测:高、低温下的线型、线宽的温度依赖,扩散激活能,自相关时间及基于一定模型假设计算自扩散系数.对LaNi_4Cu·H_x和LaNi_4Fe·H_x作了类似研究.通过对比得出结论:Cu,Fe部分置换Ni使氢在基质合金中稳定性增加.
关键词 La-Ni合金核磁共振氢扩散    
Abstract:The continuous wave NMR (nuclear magnetic resonance) results of ~1Hin LaNi_5·H_6, LaNi_4Cu·H_x and LaNi_4Fe·H_x were reported. The line shape at bothhigher and lower temperatures, the activation energy of diffusion, the self correla-tion time and the diffusion coefficient calculated according to a model have beendiscussed. It was concluded that the partial substitution of Cu and Fe for Ni increasesthe stability of hydrogen in the host alloy.
Key wordsLa-Ni alloys    nuclear magnetic resonance    hydrogen diffusion
收稿日期: 1988-02-18     
基金资助:中国科学院科学基金
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