长期自然暴露镀金表面接触阻抗的测试与研究  

The Measurement of Contact Impedance of Gold Plated Surface after a Long-Term Exposure to Air Indoor

作　　者：李雪清[1] 章继高[1] 周怡琳[1] 

机构地区：[1]北京邮电大学自动化学院,北京100876

出　　处：《电子元件与材料》2002年第12期7-10,共4页Electronic Components And Materials

基　　金：高等学校博士学科点专项科研基金

摘　　要：采用阻抗分析仪对室内长期暴露镀金样品腐蚀表面进行接触阻抗特性实验,结果表明:接触阻抗随触点的表面污染、腐蚀状况及信号频率而变化;接触阻抗中电阻分量随表面污染程度增大出现电阻增高、不稳定,而阻值亦出现随频率上升的趋势;当表面腐蚀物严重堆积时,接触电容成为主要影响参数。镀金表面自然腐蚀后接触阻抗的测试为进一步研究传输过程中接触阻抗可能产生的影响提供了必要的基础。The contact impedance on gold plated surface after long-term exposure to air indoor has been measured by an impedance analyzer. The results show that contact impedance may change with corrosion degree and signal frequency. Contact resistance goes higher and unstable when corrosion becomes more serious. Contact resistance also goes higher with the frequency. In this case, contact capacitance becomes the major factor that influences the contact impedance. The measurement is of help in analyzing effects of contact impedance on transmission systems.

关 键 词：镀金触点 接触阻抗 自然腐蚀 阻抗分析仪 

分 类 号：TM503.5[电气工程—电器]