Effect of Cerium on Mechanical Performance and Electrical Conductivity of Aluminum Rod for Electrical Purpose
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Gao Xizhu Li Pengfei Li Zhiqiang Wu Zhigang Wang Zaiyun Wang Yunli
Key words：rare earth element; aluminum rod for electrical purpose; mechanical performance; electrical conductivity;
Abstract: The effect of rare earth element Ce on mechanical performance and electrical conductivity of aluminum rod for electrical purpose were studied under industrial production condition. Using optical microscope, SEM, TEM, EDS and X-ray diffractometer, the microstructure and phase composition of aluminum rod were measured and analyzed. The results indicate that the content of rare earth element Ce is between 0.05%～0.16% in the aluminum rod for electrical purpose. Its tensile strength is enhanced to some extent. The research also discovers that the tensile strength is enhanced remarkably with impurity element Si content increases. Because influence of Si is big to the conductivity, the Si content should be controlled continuously strictly in the aluminum for electrical purpose. Adding rare earth element Ce reduces the solid solubility of Si in the aluminum matrix, and the negative effect of Si on the aluminum conductor reduces effectively. So the limit of in Si content in aluminum rod for electrical purpose can be relaxed moderately.
Gao Xizhu1，Li Pengfei2，Li Zhiqiang1，Wu Zhigang2，Wang Zaiyun1，Wang Yunli1
(1.Baotou Aluminum Co. Ltd., Baotou 014046, China;
2.College of Materials Science and Engineering, Inner Mongolia University of Technology, Huhhot 010051, China)
Abstract:The effect of rare earth element Ce on mechanical performance and electrical conductivity of aluminum rod for electrical purpose were studied under industrial production condition. Using optical microscope, SEM, TEM, EDS and X-ray diffractometer, the microstructure and phase composition of aluminum rod were measured and analyzed. The results indicate that the content of rare earth element Ce is between 0.05%～0.16% in the aluminum rod for electrical purpose. Its tensile strength is enhanced to some extent. The research also discovers that the tensile strength is enhanced remarkably with impurity element Si content increases. Because influence of Si is big to the conductivity, the Si content should be controlled continuously strictly in the aluminum for electrical purpose. Adding rare earth element Ce reduces the solid solubility of Si in the aluminum matrix, and the negative effect of Si on the aluminum conductor reduces effectively. So the limit of in Si content in aluminum rod for electrical purpose can be relaxed moderately.
Key words:rare earth element; aluminum rod for electrical purpose; mechanical performance; electrical conductivity;
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