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

Kim, Jong-Kyu (Han Yang University)
Jang, Dae-Jung (Han Yang University)
Ju, Kwang-Il (Han Yang University)
Lee, Eun-Ho (Han Yang University)
Um, Seung-Yeul (Silvermine co.,ltd)
Nam, Tae-Woon (Han Yang University)
Publication Information
Journal of Korea Foundry Society / v.28, no.4, 2008 , pp. 184-189 More about this Journal
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 ($Ag-SnO_2$ and $Ag-SnO_{2}-In_{2}O_{3}$) as an alternative solution which can fix the remaining environmental problems. However, $In_{2}O_{3}$ 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 6 wt% and Sn oxide content with 0.5, 1.0, 1.5 wt%. Results obtained from the experiments on the Ag-X%ZnO-Y%$SnO_2$ are discussed.
Keywords
Internal oxidation; Contact material; Oxide particle; Ag-Zn-Sn; Rapid solidification process;
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