Ag-Ni-SnO2电接触材料的制备及其耐电弧烧蚀性  

Preparation of Ag-Ni-SnO2 electrical contact materials and its arc erosion resistance

作　　者：游义博 王俊勃 郭敏 刘松涛 杨敏鸽[2] YOU Yibo;WANG Junbo;GUO Min;LIU Songtao;YANG Minge(School of Materials Science and Engineering,Xi’an Polytechnic University,Xi’an 710048, China;School of Environmental and Chemical Engineering,Xi’an Polytechnic University,Xi’an 710048, China)

机构地区：[1]西安工程大学材料工程学院,陕西西安710048 [2]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《西安工程大学学报》2020年第5期75-79,共5页Journal of Xi’an Polytechnic University

基　　金：陕西省自然科学研究计划项目(2016JM5049)。

摘　　要：为改善Ni和SnO2在Ag基体中的分散性,利用化学沉积工艺制备Ag-Ni-SnO2电接触材料,测试其物理性能及耐电弧烧蚀性。采用扫描电镜(SEM)、X射线衍射分析仪(XRD)及能谱仪(EDS)等对其电弧烧蚀前后微观形貌及物相结构进行分析。结果表明:制得的Ag-Ni-SnO2电接触材料组织分布较为均匀,未出现单一元素的偏聚;其密度为8.59 g/cm-3,硬度72.78 HV,电阻率3.47μΩ/m;电弧测试后材料表面没有出现明显的元素分离,部分Ni与SnO2发生氧化还原反应生成NiO,提高了Ag-Ni-SnO2电接触材料的耐电弧烧蚀性能。In order to improve the dispersion of Ni and SnO2 in Ag matrix,Ag-Ni-SnO2 electrical contact materials were prepared by chemical deposition process.The physical properties and arc erosion resistance of the prepared Ag-Ni-SnO2 electrical contact materials were tested.The microstructure and phase structure of the electrical contact materials before and after arc erosion were investigated by scanning electron microscope(SEM),X-ray diffraction(XRD)and energy disperse spectroscopy(EDS)analysis.The results show that the microstructure of Ag-Ni-SnO2 electrical contact material is relatively uniform,and there is no single element segregation;the density,hardness and resistivity of the electrical contact material are 8.59 g/cm-3,72.78 HV and 3.47μΩ/m,respectively;after the arc test,there is no obvious element separation on the surface of the materials,and part of Ni and SnO2 undergo oxidation reduction to produce NiO,which improves the arc ablation resistance of the Ag-Ni-SnO2 electrical contact materials.

关 键 词：Ag-Ni-SnO2电接触材料 耐电弧烧蚀 Ag基体 化学沉积 

分 类 号：TG146.1[一般工业技术—材料科学与工程]