Effect of Interaction Between Ce and P on Grain Size and Conductivity of Pure Copper
SONG Jintao1, LIU Haitao1, SONG Kexing1,2,3, AN Shizhong1, CHENG Chu1, HUA Yunxiao1, ZHOU Yanjun1, ZHANG Lingliang1, WANG Guojie1, TIAN Anfu1, YANG Luyao1
1 School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China 2 Henan Key Laboratory of Non-ferrous Materials Science & Processing Technology, Luoyang 471023, China 3 Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China
Abstract: The effect of the interaction between Ce and P on the grain size and conductivity of pure copper was studied through the electrical conductivity test and microstructure analysis after adding different Ce and P contents to the pure copper. The results showed that the interaction between Ce and P can remarkably refine the grain size and improve its electrical conductivity. In the experiment, the grain size of pure copper containing 0.016% P decreased from 963.67 μm to 198.75 μm after adding rare earth Ce. The electrical conductivity increased first and then decreased with increasing of Ce content. In particular, the electrical conductivity increased from 81.16%IACS to 96.14%IACS when the Ce content increased up to 0.014%. Above-mentioned experimental phenomena was mainly related to the cerium phosphorus compound formed by the interaction between Ce and P elements. On the one hand, the columnar crystal growth caused by solidification segregation of P element could be inhibited through the formation of cerium phosphorus compound, and the role of hindering grain growth about the compound. On the other hand, the content of solid dissolved phosphorus could be reduced through the formation of cerium phosphorus compound, which can remarkably improve electrical conductivity. However, the electrical conductivity could be reduced by excessive Ce element with acting as the role of “impurity”.
宋金涛, 刘海涛, 宋克兴, 安士忠, 程楚, 华云筱, 周延军, 张凌亮, 王国杰, 田安福, 杨璐瑶. 稀土铈与磷相互作用对纯铜晶粒尺寸和导电性能的影响[J]. 材料导报, 2021, 35(z2): 329-332.
SONG Jintao, LIU Haitao, SONG Kexing, AN Shizhong, CHENG Chu, HUA Yunxiao, ZHOU Yanjun, ZHANG Lingliang, WANG Guojie, TIAN Anfu, YANG Luyao. Effect of Interaction Between Ce and P on Grain Size and Conductivity of Pure Copper. Materials Reports, 2021, 35(z2): 329-332.
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2021, Vol. 35 
