Behaviors of Tin Plated and Soft Metal Contacts for Relationship between Contact Resistance and Contact Load under Low Contact Load
For low contact load less than 01N (1Ogf), contact resistance value deviates from theoretical constriction resistance. The deviation is induced by oxide films on the surfaces. Such type of metal as tin, aluminum and indium are usually considered as non corrosive surface. Since the surface is covered with oxide film, the film protects the corrosion of the surface. If the film is interposed between contacts, contact resistance increases due to its high resistivity. Therefore, it is necessary mechanical breakdown of the film under high contact loading or sliding to obtain low contact resistance. Tin plated contacts are widely applied to automotives to save the cost. In the present paper, static contact resistance characteristics of both plated and solid tin contacts plated tin contacts were compared with such soft metals as aluminum and indium. The contact load at mechanical breakdown of the film was found from sudden decrease in contact resistance.
aluminum contact resistance indium tin plated contact
Terutaka Tamai Shigeru Sawada Yasuhiro Hattori
Mie University, Graduate School of Engineering, Mie 514-8507, Japan AutoNetworks Technology, Ltd., Mie 513-8631, Japan
国际会议
温州
英文
9-13
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）