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物理学报. 1997, 46(2): 406-410.
doi: 10.7498/aps.46.406.
镍中氢与缺陷互作用的正电子寿命和多普勒展宽研究
- 收稿日期: 1996-01-22
- 修回日期: 1996-03-20
- 刊出日期: 1997-01-05
摘要: 采用正电子寿命和多普勒展宽技术研究了退火、回复及冷轧镍中氢与缺陷的互作用．结果表明：冷轧镍充氢后正电子平均寿命和多普勒展宽S参数上升，并且寿命谱的两成分拟合出现一个390ps的长寿命分量；而退火及回复镍充氢后正电子平均寿命和多普勒展宽S参数均不改变．因此认为冷轧镍充氢后正电子参数（平均寿命和S参数）的上升取决于氢和空位的互作用，与氢和位错的互作用无关；氢空位对也可以作为聚集空位的核心
English Abstract
POSITRON LIFETIME AND DOPPLER BROADENING TECHNIQUES STUDIES ON THE INTERACTION BETWEEN HYDROGEN AND DEFECTS IN NICKEL
- Received Date:
22 January 1996
- Accepted Date:
20 March 1996
- Published Online:
05 January 1997
Abstract: The interaction between hydrogen and defects in annealed,473K tempered and cold-rolled nickel samples has been investigated by positron lifetime and Doppler broadening measurements.Experimental results show that there has been no effect of hydrogen-charging on the nickel samples containing only dislocations,while in the samples containing vacancies the effect was evident.A long-lifetime component appeared for the latter,which may indicate that the hydrogen-vacancy composite is also the center of vacancy agglomeration.
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