Preferential oxidation of intermetallic compounds in Ag-2Sn-4La alloy
Preferential oxidation of intermetallic compounds in Ag-2Sn-4La alloy
复制标题
Ag-2Sn-4La合金中金属间化合物的优先氧化
DOI:
10.1016/j.corsci.2018.08.017
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发表时间:
2018-10
影响因子:
8.3
通讯作者:
Danqing Yi
中科院分区:
文献类型:
--
作者:
Qian Zhao;Chunping Wu;Huiqun Liu;Nana Li;Yong Jiang;Danqing Yi
The influence of trace La on the oxidation of Ag-Sn alloy has been widely discussed. Here we present a detailed study for evaluating the potential impact of high content La for the oxidation of Ag-Sn alloy. We found that there are two kinds of intermetallic compounds in Ag-2Sn-4La alloy. The intermetallic compounds underwent a preferential oxidation, and the corresponded precipitation sequence of oxides was La2O3, La2Sn2O7and SnO2. Based on the acquired insight, we suggest that high content La can accelerate the oxidation of Ag-Sn alloy oxidation but is not beneficial for the microstructure design of Ag-SnO2electrical contact material.
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