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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：船舶工程学院党委书记
性别：男
毕业院校：日本广岛大学
学位：博士
所在单位：船舶工程学院
学科：船舶与海洋结构物设计制造
办公地点：综合实验二号楼412房间
联系方式：0411-84706091，13898403510
电子邮箱：liugang@dlut.edu.cn
Effects of mechanical stress on protective properties of a marine coating on mild steel substrate
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论文类型：期刊论文
发表时间：2021-03-05
发表刊物：CORROSION SCIENCE
卷号：177
ISSN号：0010-938X
关键字：Corrosion; Marine coatings; Steel; EIS; Adhesion; Stress
摘要：The degradation behaviour of a marine epoxy coating on Q235 steel under mechanical stress in 3.5 % NaCl solution was investigated by electrochemical impedance spectroscopy (EIS) and adhesion tests. Results revealed that mechanical stress had a significant effect on coating barrier properties, adhesion, delaminated area, water uptake and diffusion, and this effect was not only related to the magnitude and direction of stress, but depended on immersion time. The coating under mechanical stress, regardless of stress direction, deteriorated faster than that under unstressed state. The disparity in changing trends of water uptake and diffusion coefficient with mechanical stress was also discussed.