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Materials Research Innovations Volume 19, 2015 - Issue sup4: International Union of Materials Research Societies - International Conference of Young Researchers on Advanced Materials
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Research Papers

Preparation of rod-like SnO2 powder and its application in Ag-SnO2 electrical contact materials

Y. JiangSchool of Physical Science and Technology, Yunnan University, Kunming, 650091, China
,
S. H. LiuKey Laboratory for Anisotropy and Texture of Materials (Ministry of Education)School of Materials and Metallurgy, Northeastern University, Shenyang, 110819, China;State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum MetalsKunming Institute of Precious Metals, Kunming, 650106, ChinaCorrespondence[email protected]
[email protected]
,
J. L. ChenState Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum MetalsKunming Institute of Precious Metals, Kunming, 650106, China
,
Y. MaoSchool of Physical Science and Technology, Yunnan University, Kunming, 650091, ChinaCorrespondence[email protected]
[email protected]
,
M. XieState Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum MetalsKunming Institute of Precious Metals, Kunming, 650106, China
&
X. D. SunKey Laboratory for Anisotropy and Texture of Materials (Ministry of Education)School of Materials and Metallurgy, Northeastern University, Shenyang, 110819, China
Pages S152-S156 | Received 27 Oct 2014, Accepted 27 Nov 2014, Published online: 25 May 2015
 
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Abstract

In this study, rod-like SnO2 particles with a diameter from 1 to 4 μm and the length from 5 to 50 μm were successfully prepared by chemical precipitation method. Then, SnO2 particles were mixed with silver powder by wet ball milling. After hot pressing, hot-extrusion and drawing, Ag-SnO2 electrical contact material was fabricated. The microstructure, mechanical properties and material transfer of Ag-SnO2 contact material were studied. The results showed that this kind of Ag-SnO2 electrical contact material has good performance, that is, homogeneous microstructure, high hardness HV117·55, low electrical resistivity (2·227 μΩ × cm) and low material transfer.

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