【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。文章探讨了尘土的腐蚀作用及尘土腐蚀对电接触可靠性的影响更多还原

【Abstract】 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.更多还原