Effect of mechanical milling on the microstructure of tungsten under He+ irradiation condition

Effect of mechanical milling on the microstructure of tungsten under He+ irradiation condition
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氦辐照条件下机械铣削对钨微观结构的影响

DOI:
10.1016/j.fusengdes.2015.08.006
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发表时间:
2015-11
影响因子:
1.7
通讯作者:
Yu-Cheng Wu
Yu-Cheng Wu
中科院分区:
工程技术3区
文献类型:
--
作者:
Xiao-Yue Tan;Ping Li;Lai-Ma Luo;Hong-Yu Chen;Xiang Zan;Xiao-Yong Zhu;Guang-Nan Luo;Yu-Cheng Wu

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利用硬质合金(WC-Co)球磨机和球磨WO_3粉末,用高纯H_2还原,采用放电等离子烧结技术,通过粉末冶金工艺制备了“纯”W。用X射线衍射仪、扫描电子显微镜和透射电子显微镜对其物相和相结构进行了表征。结果表明,球磨槽和球体中均有碳化钴(Co3W10C3.4)相生成。纯W块体经氦离子辐照2小时后,发现碳化钴相被W的晶格扭曲相包围,表现出较高的抗辐照能力。
“Pure” W was prepared through a powder metallurgy route by using hard alloy (WC–Co) milling tank and balls to mill WO3powder, reducing with high purity H2, and sintering with spark plasma sintering technique. XRD, SEM, and TEM were used to characterize the phase and phase structures. Results showed that the cobalt tungsten carbide (Co3W10C3.4) phase was induced from the milling tank and balls. After the “pure” W bulk was exposed to helium ions for 2 h, the cobalt tungsten carbide phase was found to be surrounded by the lattice distortion phase of W, which showed high irradiation resistance.
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