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Helium-Implanted ODS-Fe Alloy Investigated by Positron-Annihilation Spectroscopy
Gao, PL; Ju, X; Xin, Y; Cao, QS; Guo, ZM; Guo, LP; Wang, BY; Wang BY(王宝义)
2016
发表期刊IEEE TRANSACTIONS ON PLASMA SCIENCE
卷号44期号:9页码:1631-1635
摘要At room temperature, oxide dispersion strengthened (ODS)-Fe (Fe-2% Al2O3) and pure Fe were implanted with 140-keV helium ions by doses up to 1e+15, 5e+15, and 1e+16/cm(2). Vacancy-type defects induced by the implantation were investigated with positron-annihilation spectroscopy (PAS). Defect profiles of the S-parameter derived from PAS as a function of positron incident energy up to 20 KeV were analyzed. The S-parameter of the damaged layers in the ODS-Fe tend to be smaller than those in the pure Fe when the irradiation doses reach 1e+16/cm(2). This finding indicates that the ODS-Fe sample exhibits a higher irradiation resistance than the pure Fe. The reason might be that helium irradiation-induced point defects in ODS-Fe are trapped and annihilated at interfaces between the Fe matrix and the Al2O3 nanoparticles. Vacancy clusters and helium-vacancy complexes were identified as the main defects. Through the S-W curves, however, we observed only one type of defect in the irradiated ODS-Fe. While for the pure Fe case, things seem to be more complicated, where the surface and the bulk have different types of defects.
文章类型期刊论文
关键词Defects helium irradiation oxide dispersion strengthened (ODS)-Fe positron-annihilation spectroscopy (PAS)
DOI10.1109/TPS.2016.2565514
关键词[WOS]ACTIVATION FERRITIC/MARTENSITIC STEELS ; DEFECTS ; IRRADIATION ; BEHAVIOR ; DISPERSION ; NICKEL
语种英语
WOS类目Physics, Fluids & Plasmas
WOS记录号WOS:000384231500026
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260321
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Gao, PL,Ju, X,Xin, Y,et al. Helium-Implanted ODS-Fe Alloy Investigated by Positron-Annihilation Spectroscopy[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2016,44(9):1631-1635.
APA Gao, PL.,Ju, X.,Xin, Y.,Cao, QS.,Guo, ZM.,...&王宝义.(2016).Helium-Implanted ODS-Fe Alloy Investigated by Positron-Annihilation Spectroscopy.IEEE TRANSACTIONS ON PLASMA SCIENCE,44(9),1631-1635.
MLA Gao, PL,et al."Helium-Implanted ODS-Fe Alloy Investigated by Positron-Annihilation Spectroscopy".IEEE TRANSACTIONS ON PLASMA SCIENCE 44.9(2016):1631-1635.
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