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)
刊名IEEE TRANSACTIONS ON PLASMA SCIENCE
2016
卷号44期号:9页码:1631-1635
关键词Defects helium irradiation oxide dispersion strengthened (ODS)-Fe positron-annihilation spectroscopy (PAS)
DOI10.1109/TPS.2016.2565514
文章类型期刊论文
英文摘要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.
类目[WOS]Physics, Fluids & Plasmas
关键词[WOS]ACTIVATION FERRITIC/MARTENSITIC STEELS ; DEFECTS ; IRRADIATION ; BEHAVIOR ; DISPERSION ; NICKEL
语种英语
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
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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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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