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Failure Behavior of Fresh Water Tank Coating in Different Water |
CAO Jingyi1, YANG Yange2(), FANG Zhigang1, SHOU Haiming3, LI Liang1, FENG Yafei1, WANG Xingqi2, CHU Guangzhe1, ZHAO Yi1 |
1.Unit 92228, People's Liberation Army, Beijing 100072, China 2.Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 3.Unit 92942, People's Liberation Army, Beijing 100161, China |
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Abstract Failure behavior of epoxy coating used for fresh water tank, namely epoxy coating/Q235 carbon steel, in different media including three different fresh water and one kind of salt water was investigated by means of adhesion test, water absorption test and electrochemical impedance spectroscopy. Failure of the epoxy coating in fresh water was earlier than that in salt water owing to the faster penetration rate. The failure process of the epoxy coating in fresh waters, including reverse osmosis water, conditioning water and drinking water was similar, and can be differentiated as the following three stages: the quick penetration of water, corrosion of the substrate at the interface of coating/steel and the corrosion inhibition of pigments in the coating.
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Received: 13 January 2021
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Corresponding Authors:
YANG Yange
E-mail: ygyang@imr.ac.cn
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About author: YANG Yange, E-mail: ygyang@imr.ac.cn
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Cite this article:
CAO Jingyi, YANG Yange, FANG Zhigang, SHOU Haiming, LI Liang, FENG Yafei, WANG Xingqi, CHU Guangzhe, ZHAO Yi. Failure Behavior of Fresh Water Tank Coating in Different Water. Journal of Chinese Society for Corrosion and protection, 2021, 41(2): 209-218.
URL:
https://www.jcscp.org/EN/10.11902/1005.4537.2021.008 OR https://www.jcscp.org/EN/Y2021/V41/I2/209
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