尘土腐蚀对电接触表面的影响  

Corrosion on Electric Contact Surfaces Due to Dust Contamination

作　　者：高锦春[1] 章继高[1] 

机构地区：[1]北京邮电大学,北京100876

出　　处：《机电元件》2003年第2期11-14,18,共5页Electromechanical Components

基　　金：国家自然科学基金资助项目 (5 0 2 770 0 2 )

摘　　要：对北京尘土中水溶性成分进行了分析测定 ,结果表明 :水溶性成分中含有K+ 、Na+ 、Ca2 + 、Mg2 + 、NH4 + 、SO4 2 - 、NO3- 、Cl- 、F- 、HCO3- 、NO2 - 等离子。对失效的连接器分析发现 :在电接触表面上有大量的污染物 ,腐蚀产物中含有K、Ca、S、Cl等尘土水溶性成分。Analysis of the water soluble salts in airborne dust samples collected in Beijing has been carried out by various analytic methods, the results show that K +, Na +, Ca 2+ , Mg 2+ , NH 4 + , SO 4 2- , NO 3 -, Cl -, F -, HCO 3 - and NO 2 - exist in the water solution of dust. The failed connectors are inspected by scanning electron microscope and X ray energy spectroscope, serious contaminants are detected at the contact interfaces. The major elements of water soluble salts in dust such as K, Ca, S and Cl are found in part of the corrosion products. This paper discusses the corrosion effect of dust contamination on electric contact surfaces.

关 键 词：连接器 电接触表面 尘土腐蚀 失效分析 

分 类 号：TM503.5[电气工程—电器]