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氦离子预注入对钨中氘滞留行为的影响
作者:
作者单位:

1.兰州理工大学 材料科学与工程学院;2.中国科学院兰州化学物理研究所 固体润滑国家重点实验室

作者简介:

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中图分类号:

TG146,TL341

基金项目:

国家重点研发计划“政府间国际科技创新合作专项”磁约束核聚变能发展研究项目(2017YFE0302500),自然科学基金面上项目(11875305)。


Effect of helium ion pre-implantation on deuterium retention behavior in tungsten
Author:
Affiliation:

1.School of Materials Science and Engineering,Lanzhou University of Technology;2.State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences

Fund Project:

National Key R&D Program of China ,The National Key Technologies R&D Program of China

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    摘要:

    利用高能离子注入机和直线等离子体模拟装置,本文研究了高能氦离子预注入对氘等离子体辐照后钨中氘滞留行为的影响。采用FIB-SEM、TEM、GD-OES和TDS等分析方法,分析了氦离子预注入对钨中氘滞留行为的影响。结果表明:氦离子预注入在辐照损伤区域形成大量氦泡,钨经过氘等离子体辐照后,表面的氘泡数量明显低于未经过氦离子预注入的样品。GD-OES分析中可以看到在氦捕获位处氘滞留浓度明显升高,同时氦离子预注入增加了氘在钨中的扩散深度,结合TDS分析可知氦离子预注入增加了氘在钨中的滞留总量,这是由于氦离子预注入后,形成的缺陷又为钨中氘的俘获提供大量新的位点,从而导致钨中的氘滞留量明显提高。

    Abstract:

    The effect of high-energy helium ion pre-implantation on deuterium retention behavior in tungsten was studied by using high-energy ion implanter and linear experimental plasma system (LEPS). FIB-SEM, TEM, GD-OES and TDS measurements were used to analyze the effect of helium ion pre-implantation on deuterium retention in tungsten from both microstructure and deuterium concentration depth profile. The results show that a large number of helium bubbles are formed in the irradiated area by implantation of helium ions. After deuterium plasma exposure, the number of deuterium bubbles are was significantly lower than that of sample without helium ion pre-implantation. GD-OES analysis shows that deuterium concentration depth profile increases obviously at the helium capture position, and the helium ion pre-implantation increases the diffusion depth of deuterium in tungsten. TDS analysis also shows that helium ion pre-implantation increases the retention of deuterium in tungsten. This can be attributed to the defects formed after helium ions pre-implantation provide a large number of new trap sites for deuterium capture in tungsten, which leads to the significant increase of deuterium retention in tungsten.

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引用本文

金玉花,贺冉,张学希,乔丽,王鹏.氦离子预注入对钨中氘滞留行为的影响[J].稀有金属材料与工程,2020,49(10):3498~3504.[Jin Yuhua, He Ran, Zhang Xuexi, Qiao Li, Wang Peng. Effect of helium ion pre-implantation on deuterium retention behavior in tungsten[J]. Rare Metal Materials and Engineering,2020,49(10):3498~3504.]
DOI:10.12442/j. issn.1002-185X.20190844

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  • 收稿日期:2019-10-12
  • 最后修改日期:2019-11-11
  • 录用日期:2019-11-12
  • 在线发布日期: 2020-11-04
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