Failure characteristics of Ag-SnO2 contact material in AC level
来源期刊：Rare Metals2008年第1期
论文作者：MENG Fanbina,b,LU Jianguoa,ZHU Yongqinga,b,LU Ningyib,CHEN Zhichaob,and HUANG Qiutaob a Electrical Apparatus Institute,Hebei University of Technology,Tianjin ,China b Hongfa Electroacoustic Co.Ltd.,Xiamen ,China
文章页码：18 - 21
摘 要：The failure characteristics of the contact material Ag-SnO2 were investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,and X-ray energy dispersive spectroscopy（EDS）.Phase analysis showed that there were Ag,SnO2,and Sn on the contact surfaces at the time of failure under the load condition of 30 A and 220 V（AC）,which means that SnO2 decomposed in service.When the contacts were tested under airproof ambient condition,half-spherical bulges came into being on the contact surfaces,which resulted in early failure and dispersive characteristics.But half-spherical bulges were not found when the contacts were tested under open ambient condition.The temperature change of the contacts during the life testing under airproof ambient condition was different from that under open ambient condition.
MENG Fanbina,b,LU Jianguoa,ZHU Yongqinga,b,LU Ningyib,CHEN Zhichaob,and HUANG Qiutaob a Electrical Apparatus Institute,Hebei University of Technology,Tianjin 300130,China b Hongfa Electroacoustic Co.Ltd.,Xiamen 361021,China
摘 要：The failure characteristics of the contact material Ag-SnO2 were investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,and X-ray energy dispersive spectroscopy（EDS）.Phase analysis showed that there were Ag,SnO2,and Sn on the contact surfaces at the time of failure under the load condition of 30 A and 220 V（AC）,which means that SnO2 decomposed in service.When the contacts were tested under airproof ambient condition,half-spherical bulges came into being on the contact surfaces,which resulted in early failure and dispersive characteristics.But half-spherical bulges were not found when the contacts were tested under open ambient condition.The temperature change of the contacts during the life testing under airproof ambient condition was different from that under open ambient condition.
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