Materials Reports  2021, Vol. 35 Issue (z2): 329-332 |
| METALS AND METAL MATRIX COMPOSITES |
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| 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
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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 |
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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”.
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Published: 09 December 2021
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| Fund:This work was financially supported by the National Natural Science Foundation of China (52071133) and Distinguished Young Talents in Higher Education of Henan (CN) (2021HYTP018). |
About author:: Jintao Song is a master and mainly engaged in the research of copper alloy materials. He has been studying in the College of Materials Science and Engineering (Henan University of Science and Technology) since Sep.2019.
Kexing Song, doctor, professor, doctoral supervisor, winnerof two national science and technology progress second prize. Experts enjoying special allowance of the State Council and scholars from Central China. Mainly engaged in high performance copper alloy and advanced preparation and processing technology. |
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