Bi掺杂纳米AgSnO_2的耐电弧侵蚀性能研究  

Study on Arc Erosion Resistance Properties of Nano-AgSnO_2 Electrical Contact Materials Doped with Bi

作　　者：朱艳彩[1] 王景芹[1] 王海涛[1] 

机构地区：[1]河北工业大学,天津300130

出　　处：《稀有金属材料与工程》2013年第1期149-152,共4页Rare Metal Materials and Engineering

基　　金：河北省自然科学基金(E2009000063)

摘　　要：AgSnO2在使用过程中温升过高以及抗侵蚀性和抗熔焊性差。采用溶胶-凝胶法制备掺杂Bi元素的纳米复合AgSnO2电接触合金,对合金进行电弧侵蚀试验,通过扫描电镜对合金电弧侵蚀后的形貌、燃弧能量和燃弧时间进行观察和分析。结果发现,与无掺杂的纳米复合AgSnO2合金相比,Bi元素的加入改善了Ag对SnO2的浸润性,避免了因SnO2富集形成绝缘层使接触电阻升高,从而提高触头材料电性能、电寿命,抗熔焊、耐电弧烧损的能力。The Bi-doped nanocomposite AgSnO2 contact alloys were prepared by sol-gel method and breaking arc experiments were carried out. The morphology of the arc erosion, arc energy and arc duration of AgSnO2 contact alloys was observed and investigated by means of Scanning Electron Microscopy （SEM）. Results show that the addition of Bi element improves the wettability of Ag to SnO2 and prevents the temperature arising owing to the formation of SnO2 insulation layer and thus significantly improves the electrical properties, such as the electrical life, anti-fusion welding ability, and electrical arc resistance of the materials.

关 键 词：电接触材料 溶胶-凝胶 Bi掺杂 纳米复合 电弧侵蚀 

分 类 号：TM24[一般工业技术—材料科学与工程]