Assessing the corrosion protection property of coatings loaded with corrosion inhibitors using the real-time atmospheric corrosion monitoring technique  

作　　者：Xiaoxue Wang Lulu Jin Jinke Wang Rongqiao Wang Xiuchun Liu Kai Gao Jingli Sun Yong Yuan Lingwei Ma Hongchang Qian Dawei Zhang 

机构地区：[1]School of Energy and Power Engineering,Beihang University,Beijing 100191,China [2]Beijing Institute of Space Long March Vehicle,Beijing 100076,China [3]National Materials Corrosion and Protection Data Center,University of Science and Technology Beijing,Beijing 100083,China [4]Institute of Materials Intelligent Technology,Liaoning Academy of Materials,Shenyang 110004,China [5]Shanghai Spaceflight Precision Machinery Institute,Shanghai 201600,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第1期119-126,共8页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52371049);the Young Elite Scientists Sponsorship Program by the China Association for Science and Technology(YESS,No.2020QNRC001);the National Science and Technology Resources Investigation Program of China(Nos.2021FY100603 and 2019FY101404)。

摘　　要：The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal materials.However,limited studies have applied ACM to the corrosion protection properties of organic coatings.This study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors,both applied on ACM sensors,to observe their corrosion protection properties over time.Coatings with artificial damage via scratches were exposed to immersion and alternating dry and wet environments,which allowed for monitoring galvanic corrosion currents in real-time.Throughout the corrosion tests,the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy coating.The trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface analysis.This alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic coatings.Compared with the blank epoxy coating,the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.

关 键 词：atmospheric corrosion monitoring technology corrosion inhibitor COATING carbon steel corrosion protection 

分 类 号：TG172.3[金属学及工艺—金属表面处理]