Effect of ITO Reinforcement Phase on Microstructure and Properties of AgSnO2 Electrical Contact Materials
A new AgSnO2(10)ITO(5)electrical contact material was prepared by alloy powder pre-oxidation method compared with AgSnO2(10)In2O3(5)with the same oxide content.The results show that the high content of conductive oxide ITO replacing In2O3 improved the electrical life by 30%compared to AgSnO2(10)In2O3(5)to 60 000 cycles.The arc characteristics study and morphological analysis after continuous pass-through experiments show that the average arc energy of the samples after ball milling decreased significantly,and the fusion welding force was reduced and stable.The number of surface ablation pits was significantly reduced and a large number of small sandy liquid beads were present.The conductive oxide ITO is expected to be a new high-content oxide dopant for Ag-based electrical contact materials with potential research value.
ITOelectrical contact materialball millingelectrical life
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