Dislocation loop and tangle evolution of peak damage region in tungsten irradiated by heavy ion and deuterium plasma

Dislocation loop and tangle evolution of peak damage region in tungsten irradiated by heavy ion and deuterium plasma
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重离子和氘等离子体辐照钨的位错环和峰值损伤区缠结演化

DOI:
10.1088/1741-4326/ab6b3f
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发表时间:
2020-02
期刊:
影响因子:
3.3
通讯作者:
Guang-Hong Lu
Guang-Hong Lu
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Wangguo Guo;Shiwei Wang;Lin Ge;Engang Fu;Yue Yuan;Long Cheng;Guang-Hong Lu

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透射电子显微镜广泛用于研究钨中重离子辐照和氘等离子体暴露引起的缺陷,然而,原位辐​​照实验和近体辐照实验的结果差异很大。这里我们采用背薄电解抛光和再电解抛光方法来研究重离子损伤钨的损伤峰区的显微组织。观察到随着损伤程度的增加,从位错环到复杂位错缠结的转变,并且还揭示了高通量氘等离子体暴露下位错缠结的分解和氘泡的形成。本文的结果为进一步研究 W 中的辐照缺陷演化以及位移损伤和氘行为的协同效应提供了有用的信息。
Transmission electron microscope is widely used to investigate the defects induced by heavy ion irradiation and deuterium plasma exposure in tungsten, however, results differ greatly between in situ and near-bulk irradiation experiments. Here we adopt the back-thinned electropolishing and re-electropolishing method to study the microstructure in the peak damage region of heavy ion damaged tungsten. Transition from dislocation loops to complex dislocation tangles with increasing damage level is observed, and dislocation tangle decomposition and deuterium bubble formation under high-flux deuterium plasma exposure are also revealed. The results presented in this paper provide useful information for further investigation on irradiation defect evolution and the synergetic effect of displacement damage and deuterium behavior in W.
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发表时间: 1993-12
影响因子: 3.1
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