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The mechanisms of cracks formation of silver-based contact materials under arc and making pressure
作者姓名:郭凤仪  陈忠华  张玲玲  张继华  FWLeuschner
作者单位:[1]DepartmentofElectricalEngineering,LiaoningTechnicalUniversity,Fuxin123000,China [2]DepartmentofElectrical,ElectronicsandComputerEngineering,UniversityofPretoria,SouthAfrica
基金项目:Supported by Fok Yintung Education Foundation of China(71056)
摘    要:The arc erosion experiments on five kinds of silver-based contact materials,AgZnO (10), AgSnO2 (8.5) In2O3 (4), AgCdO (12), AgNi(10), AgWC(12)C(3) were carried out according to different breaking times, breaking currents, and making pressures. Then based on the theoretical analysis and the photographs taken by scanning electronic microscope with EDAX analyzer, the crack morphology was studied scientifically. Three types of cracks, which are cavity cracks, grain boundaries (or phase boundaries) slipping cracks, and thermal stress cracks, were put forward under arc and making pressure through establishing their physical models and discussing their formation mechanisms.

关 键 词:接触材料    EDAX  裂纹  AgZnO  AgSnO2  In2O3  AgCdO  AgNi

The mechanisms of cracks formation of silver-based contact materials under arc and making pressure
GUO Feng-yi,CHEN Zhong-hua ,ZHANG Ling-ling ,ZHANG Ji-hua ,FW Leuschner.The mechanisms of cracks formation of silver-based contact materials under arc and making pressure[J].Journal of Coal Science & Engineering(China),2004,10(1):73-77.
Authors:GUO Feng-yi  CHEN Zhong-hua  ZHANG Ling-ling  ZHANG Ji-hua  FW Leuschner
Affiliation:GUO Feng-yi1,CHEN Zhong-hua 1,ZHANG Ling-ling 1,ZHANG Ji-hua 1,FW Leuschner2
Abstract:The arc erosion experiments on five kinds of silver-based contact materials, AgZnO (10), AgSnO2 (8.5) In2O3 (4), AgCdO (12), AgNi(10), AgWC(12)C(3) were carried out according to different breaking times, breaking currents, and making pressures. Then based on the theoretical analysis and the photographs taken by scanning electronic mi-croscope with EDAX analyzer, the crack morphology was studied scientifically. Three types of cracks, which are cavity cracks, grain boundaries (or phase boundaries) slipping cracks, and thermal stress cracks, were put forward under arc and making pressure through establishing their physical models and discussing their formation mechanisms.
Keywords:contact materials  cracks  mechanisms
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