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首页> 外文期刊>Journal of Materials Science >Short-term corrosion behavior of galvanized coatings in natural waters of the Greek territory
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Short-term corrosion behavior of galvanized coatings in natural waters of the Greek territory

机译:镀锌涂层在希腊领土的天然水中的短期腐蚀行为

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摘要

The corrosion behavior of hot-dip galvanized steel immersed in domestic and seawater was investigated after an exposure period up to 10 days. The examination of the coatings was accomplished with optical microscopy, scanning electron microscopy and X-ray diffraction. From this investigation it was deduced that the corrosion process in domestic water is slow and mainly proceeds through pitting corrosion, while the corrosion phenomena in seawater are more intense. The main mechanisms in this environment are pitting and intergranular corrosion. In both waters the Cl- and the O2- ions diffuse in the coating up to the Fe/Zn interface. Especially in seawater the Cl- ions seem to be very aggressive.
机译:经过长达10天的暴露时间后,研究了浸入生活和海水中的热浸镀锌钢板的腐蚀行为。用光学显微镜,扫描电子显微镜和X射线衍射完成涂层的检查。从这项调查中可以推断出,生活用水中的腐蚀过程缓慢,并且主要通过点蚀进行,而海水中的腐蚀现象则更为严重。在这种环境下的主要机理是点蚀和晶间腐蚀。在这两种水中,Cl-和O2-离子在涂层中扩散到Fe / Zn界面。尤其是在海水中,Cl离子似乎非常具有腐蚀性。

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