Abstract

A uniform mixture precursor containing Ag2O and Ag2SnO3 was synthesized via a facile ion exchange reaction method. The influence of pH value on composition and precipitation rate of the precursor was investigated systematically. The Ag-SnO2 composite powder was obtained by decomposition of the precursor at 600°C, and uniform mixing of elements was inherited from the precursor and fresh and intimate Ag-SnO2 interfaces were created. The Ag-SnO2 electrical contact material was prepared using this composite powder by hot-pressing method. It was found that nano-sized SnO2 particles (about 20.6 nm) are homogeneously dispersed in the Ag-matrix. The as-prepared Ag-SnO2 electrical contact material shows excellent performances, such as high hardness (154 MPa), high density (9.90 g/cm3) and good electrical conductivity (72.24%IACS).

Details

Title
Facile synthesis of silver-tin oxide electrical contact materials by in-situ decomposition of a uniform mixture precursor
Author
Lin, Z J 1 ; Sun, X D 1 ; Liu, S H 2 ; Xie, M 3 ; Chen, J L 3 ; Li, J G 4 

 Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning 110819, China 
 Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning 110819, China; State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China 
 State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China 
 Advanced Materials Processing Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan 
Publication year
2015
Publication date
Dec 2015
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2565101094
Copyright
© 2015. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.