Lap-joint corrosion of automotive coated materials in chloride media. Part 1 - Electrogalvanized steel
Lap-joint corrosion of automotive coated materials in chloride media. Part 1 - Electrogalvanized steel
复制标题
汽车涂层材料在氯化物介质中的搭接腐蚀。
DOI：
10.1016/s0257-8972(99)00623-4
复制
发表时间：
2000
影响因子：
5.4
通讯作者：
M. Morcillo
中科院分区：
文献类型：
--
作者：
E. Almeida;M. Morcillo
搭接接头腐蚀已经由几个作者研究。然而，这种类型的腐蚀所涉及的机制，在汽车工业的新油漆基材的具体情况下，是不清楚的。这项工作的主要目的是研究搭接接头腐蚀在现代汽车涂装基板，即电镀锌钢，合金化锌和电镀锌/合金化锌组件。在这第一部分的工作，电镀锌钢研究使用特殊的试样点焊搭接接头，盐雾暴露前后。涉及特殊的搭接间距和位置。提出的腐蚀机制是基于通过目视观察，扫描电子显微镜（SEM）与X射线能量色散谱（EDS），X射线衍射（XRD），俄歇能谱（AES）和X射线光电子能谱（XPS）得到的结果。
Lap-joint corrosion has been studied by several authors. However, the mechanisms involved in this type of corrosion, in the specific case of new painting substrates for the automotive industry, are not at all clear. The main purpose of this work is to study lap-joint corrosion in modern automotive painting substrates, namely electrogalvanized steel, galvanneal and electrogalvanized/galvanneal assemblies. In this first part of the work, electrogalvanized steel is studied using special specimens with spot-welded lap-joints, before and after salt-spray exposure. Special lap-joint spacements and positions were involved. The corrosion mechanisms proposed were based on the results obtained by visual observations, scanning electron microscopy (SEM) associated with X-ray energy dispersive spectrometry (EDS), X-ray diffraction (XRD), Auger spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS).