文献类型：期刊文献

英文题名：The study on the corrosion resistance of hot-dip galvanized aluminum coating in simulating the urban utility tunnel environment

作者：Chen, Wanlin[1]; Hou, Feng[1]; Wang, Hehui[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China

年份：2019

卷号：490

期号：2

外文期刊名：IOP Conference Series: Materials Science and Engineering

收录：EI(收录号：20191906904753)

语种：英文

外文关键词：Steel corrosion - Weathering - Aluminum corrosion - Corrosion resistance - Sodium chloride - Atmospheric corrosion - Electrochemical corrosion - Electrochemical impedance spectroscopy - Corrosion resistant coatings

摘要：The urban utility tunnel is an important infrastructure to ensure the operation of the city. Because the environment in which the urban utility tunnel is located is relatively humid, the steel in this environment is susceptible to electrochemical corrosion. In this paper, the corrosion resistance of weathering steel with hot-dip galvanized aluminum coating in simulating the urban utility tunnel environment is studied. The corrosion resistance of Q345 steel, weathering steel and hot-dip galvanized aluminum coating in the initial immersion of 3.5 wt.% NaCl solution was compared by means of the electrochemical test (polarization test and electrochemical impedance spectroscopy (EIS)). The results show that the hot-dip galvanized aluminum coating can greatly improve the corrosion resistance of the substrate, and this coating can be applied to the urban utility tunnel. ? 2019 Published under licence by IOP Publishing Ltd.