Microstructure and Properties of MeO Doped Ag/SnO2 Electric Contact Materials
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1.College of Materials Science and Engineering,Zhejiang University of Technology;2.Zhejiang-California International Nanotechnology Institute,Zhejiang University
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Abstract:
Ag/SnO2(x)-MeO(y) composite powders were obtained by means of mechanical alloying different contents of CuO or Fe2O3 powders with Ag and SnO2 powders, and Ag/SnO2(x)-MeO(y) electrical contact materials were prepared by hot pressing process. The microstructure and physical and mechanical properties of the materials were characterized by scanning electron microscopy, X-ray diffractometry, resistance tester, hardness tester and tensile tester. The results show that the density of Ag/SnO2(x)-MeO(y) materials decreases with the increase of dopant content, and CuO is more conducive to improving the conductivity of Ag/SnO2(x)-MeO(y) material than Fe2O3. The two dopants can obviously improve the capacity of plastic deformation of Ag/SnO2(x)-MeO(y) material. The Ag/SnO2(11.2%)-CuO(0.8%) material (i.e. CuO content =0.8%) exhibits the best comprehensive properties with the resistivity about 2.35 μΩ?cm, elongation about 9.1% (higher than that of Ag/SnO2 material by 93.6%).
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[Yang Fanger, Wang Guicong, Mu Chengfa, Wu Junchen, Shen Tao, Zhang Lingjie, Zheng Xiaohua. Microstructure and Properties of MeO Doped Ag/SnO2 Electric Contact Materials[J]. Rare Metal Materials and Engineering,2020,49(4):1301~1305.] DOI：[doi]