The Effect of Sn contents on Rapidly Solidified Ag-X％Zn Electric Contact Materials

Abstract

Ag-Cd alloy has been widely used as an electrical contact material, since Ag-Cd alloy has a good wear resistance and stable contact resistance. But nowadays Ag-Cd alloy is not considered as electrical contact material any more due to detrimental effect on environments. Currently, active researches are being performed on (Ag-SnO2 and Ag-SnO2-In2O3) as an alternative solution which can fix the remaining environmental problems. However, In2O3 is relatively expensive and Ag-Sn alloy has low wear resistance. Our recent research results show that Ag-X%Zn-Y%Sn has similar physical and chemical properties. In the present study, so we tried to change and to optimize the Zn oxide content to over 6wt% and Sn oxide content with 0.5, 1.0, 1.5wt%. Results obtained from the experiments on the Ag-X%ZnO-Y%SnO2 are discussed.