摘要
阐述了电触头材料表面劣化的分类，对ＡｇＮｉ，ＡｇＣ－ｄＯ，ＡｇＳｎＯ２及其不同配对时的抗熔焊性能进行了对比实验；分析了交流电弧作用下材料成分含量分布变化规律与金属θｍＣｐρｍλ间的关系。研究了电弧对ＡｇＣｄＯ等材料微观形貌的影响规律及其与熔焊概率的关系；指出了由于金属氧化物在高温下分解而使ＡｇＣｄＯ和ＡｇＳｎＯ２表现为ＡｇＣｄ和ＡｇＳｎ的抗熔焊特性，且材料非对称配对时抗熔焊能力表现出“中间效应”
This paper introduced the types of surface deterioration of electrical contact materials and finished the experiments of welding resistance for AgCdO,AgSnO 2,AgNi and their different pairings,analysed the changes of surface composition and distribution as well as the relationship between component distribution and the thermal parameter θ mC pρmλ .The authors furtherly studied the influence of alternate arcing on morphology of AgMeO contact surface and the action of morphology on welding resistance.It is pointed out that AgCdO,AgSnO 2 will behave like AgCd, AgSn alloy in anti welding aspect due to the decomposition of CdO and SnO 2 under the high temperature of arcing, different material pairing (such as AgNi vs AgSnO 2 etc.) will have “intermediate effect” in welding resistance.
出处
《中国电机工程学报》
EI
CSCD
北大核心
1999年第4期54-58,共5页
Proceedings of the CSEE
关键词
电触头材料
银金属氧化物
表面劣化
抗熔焊
electrical contact material
AgMeO
surface deterioration
welding resistance
