论文部分内容阅读
一、引言银镀层具有光亮、白色的外表和良好的导电性、可焊性以及较低的接触电阻,故而广泛应用于各类型电气元件上,但银镀层在大气中很快受硫化作用而变色,导致这些特性受到损害。为满足各电气元件的技术要求,保留其优异的银白色外观和有关优良的电气特性,本文就银镀层的变色与防变色机理、防护工艺及其在国内外的进展和人工加速鉴测方法等予以综述,并推荐新型防银变色的途径。二、机理银镀层表面的光亮白色是均匀晶格状态的反映,当表面受侵蚀形成其它化合物时,
I. Introduction Silver coating has a bright, white appearance and good electrical conductivity, solderability and lower contact resistance, it is widely used in various types of electrical components, but the silver coating in the atmosphere quickly by the role of sulfuration and discoloration , Causing these features to suffer. In order to meet the technical requirements of various electrical components, to retain its excellent silver-white appearance and related to the excellent electrical characteristics, this paper on the silver coating discoloration and discoloration mechanism, protection technology and its progress at home and abroad and artificial accelerated detection methods To summarize, and recommend a new way to prevent silver discoloration. Second, the mechanism Bright white silver coating surface is a reflection of uniform lattice state, when the surface erosion by the formation of other compounds,