Self-healing PEO/MgAlLa LDHs-MXene composite coating loaded with 4-aminophenol for corrosion protection of Mg-Gd-Y-Zn LPSO Mg alloy

被引：9
作者：
Wu, Jiahao [1 ]
Wu, Liang [1 ,2 ]
Yao, Wenhui [1 ,2 ]
Zhou, Yan [1 ]
Wu, Mingyi [1 ]
Yuan, Yuan [1 ,2 ]
Xie, Zhihui [3 ]
Atrens, Andrej [4 ]
Wang, Jingfeng [1 ,2 ]
Pan, Fusheng [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[2] Chongqing Univ, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China
[3] China West Normal Univ, Coll Chem & Chem Engn, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637002, Peoples R China
[4] Univ Queensland, Ctr Adv Mat Proc & Mfg, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia
来源：
ELECTROCHIMICA ACTA | 2024年 / 491卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; MXene@4-Aminophenol material; Corrosion resistance; Self-sealing; Composite coating; LAYERED DOUBLE HYDROXIDE; STACKING ORDERED PHASE; MECHANICAL-PROPERTIES; BEHAVIOR; MICROSTRUCTURE; RESISTANCE; FILMS;
D O I：
10.1016/j.electacta.2024.144358
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
This paper provides an effective method to solve the problems that magnesium alloys easily corrode and their coatings are easily damaged. The micro-pores of PEO coating on the Mg alloy were sealed by in-situ growth of MgAlLa LDHs, and then compounded with MXene doped 4-aminophenol corrosion inhibitor to obtain PEO/ MgAlLa LDHs-MXene@4-Aminophenol (P/MgAlLa LDHs-M@A) composite coating. The structure, morphology and composition of the P/MgAlLa LDHs-M@A coating contained the successful combination of MgAlLa LDHs and MXene@4-Aminophenol. The P/MgAlLa LDHs-M@A coating had excellent corrosion resistance and self-healing properties, with an impedance modulus | Z | 0.01 of 8.8 x 10 7 Omega cm 2 . Scratch defects were self-healed within 12 h. In addition, the mechanisms of corrosion resistance and self-healing were explained.
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页数：20
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