Finite element analysis of effect of interfacial bubbles on performance of epoxy coatings under alternating hydrostatic pressure

Rui Liu ¹Li Liu ²Wenliang Tian ³Yu Cui ³Fuhui Wang²

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作者信息

1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;Key Laboratory for Anisotropy and Texture of Materials (MoE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819,China
3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
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Abstract

The stresses around bubbles formed on a coating/substrate interface under hydrostatic pressure (HP)and alternating hydrostatic pressure (AHP) were calculated using the finite element method.The results reveal that HP promotes coating failure but does not mechanically destroy the interface,whereas AHP can provide tensile stress on bubbles formed at the interface and accelerate disbonding of the coating.Because of water resistance,a lag time exists for the coating that serves in an AHP environment.The coating can have a better protective performance if the lag time suits the AHP to minimize the impact of the AHP on the interface.

Key words

Finite element method/Organic coatings/Alternating hydrostatic pressure/Interracial bubbles/Adhesion

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基金项目

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量51

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