汪京  (副研究员)

Bing Ma, Yoshimistu Hishinuma, Hiroyuki Noto, Yifan Zhang, Jing Wang*, Laima Luo*, Takeo Muroga, Effect of different Y components on optimization of dispersive Y2O3 particles in ODS-Cu, Journal of Nuclear Materials, 2022, 571: 154016.

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DOI码：10.1016/j.jnucmat.2022.154016

发表刊物：Journal of Nuclear Materials

关键字：ODS-Cu, Y2O3 sources, Cu6Y compound, Mechanical alloying

摘要：In order to reflect the superiority of using Cu 6 Y as the Y 2 O 3 source, three different Y sources addition, direct Y 2 O 3 by conventional mechanical alloying process, pure metal Y and Cu 6 Y compound by in-situ fabrication method, were compared in the ODS-Cu with 1.5 wt.% Y 2 O 3 . It was found that compared to Y 2 O 3 or pure metal Y, the brittle Cu 6 Y played the roles of both suitable Y precursor to enhance Y dis- solution and process control agent (PCA) to suppress the growth of mechanical alloying (MA) powders. The alloyed layer was thickened with the MA time, and the further MA gradually becomes difficult. It is inefficient to fully alloy the MA powders only by prolonging milling time. The samples by in-situ fab- rication method (Y and Cu 6 Y sourced) had more contaminations with Fe, because of the oxidation of milling mediums by Cu 2 O, which was used to oxide the Y precursors to form the Y 2 O 3 . The contami- nations contributed to the hard prior particles boundaries where fracture took place during the tensile tests, resulting in the poor tensile performance for the samples by in-situ fabrication method. Consider- ing that the Cu 6 Y sourced sample by in-situ fabrication method formed fine and high dense dispersive Y 2 O 3 particles with the size of 19 ±7 nm and a high number density of 1.8 ×10 21 /m 3 , it has a larger potential for improvement once the means to reduce Fe impurities and holes are developed.

第一作者：Bing Ma

论文类型：期刊论文

通讯作者：Laima Luo,Jing Wang

论文编号：154016

学科门类：工学

期号：571

是否译文：否

发表时间：2022-09-05

收录刊物：SCI