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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