Enhanced active corrosion protection coatings for aluminum alloys with two corrosion inhibitors co-incorporated in nanocontainers

被引：53
作者：
Ma, Lingwei [1 ,2 ,3 ]
Wang, Jinke [1 ,2 ]
Wang, Yajie [1 ,2 ]
Guo, Xin [1 ,2 ]
Wu, Shanghao [1 ,2 ]
Fu, Dongmei [2 ,3 ,4 ]
Zhang, Dawei [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Natl Mat Corros & Protect Data Ctr, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, Shunde Grad Sch, MOE, BRI Southeast Asia Network Corros & Protect, Foshan 528399, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Automat & Elect Engn, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 208卷
基金：
中国国家自然科学基金;
关键词：
Active corrosion protection; Coatings; Corrosion inhibition; Self -healing coatings; SELF-HEALING COATINGS; CARBON-STEEL; SILICA NANOCONTAINERS; MESOPOROUS SILICA; DELIVERY-SYSTEM; BENZOTRIAZOLE; IMPROVEMENT; RESISTANCE; AA2024-T3; PROPERTY;
D O I：
10.1016/j.corsci.2022.110663
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An active corrosion protection coating was developed based on mesoporous SiO2 nanoparticles simultaneously incorporated with benzotriazole and 2-mercaptobenzothiazole inhibitors (BTA+MBT@mSiO(2) NPs). The enhanced inhibition effect between BTA and MBT mixtures against the corrosion of aluminum alloy (AA2024-T3) was assessed through a visual-identification based high-throughput screening method and EIS measurement. DFT and MD simulation revealed that the hydrogen bond interaction between BTA and MBT promoted their co -adsorption on the alloy surface. An epoxy coating containing 2 wt% BTA+MBT@mSiO(2) NPs exhibited enhanced active corrosion protection of AA2024-T3 in 3.5 wt% NaCl solution. XPS results confirmed the adsorption of binary inhibitors to suppress corrosion.
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页数：17
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