Enhancement of Active Anticorrosion via Ce-doped Zn-Al Layered Double Hydroxides Embedded in Sol-Gel Coatings on Aluminum Alloy

查看全文 作　　者：[1]张优;[1]刘建华;LI [1]Yingdong;YU [1]Mei;YIN [1]Xiaolin;LI [1]Songmei

机构地区：[1]School of Materials Science and Engineering, Beihang University, Beijing 100191, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》索引2017年第32卷第5期,共6页

基　　金：Funded by the National Natural Science Foundation of China(No.51271012) 摘　　要：Ce-doped Zn-Al layered double hydroxide(LDH) nanocontainer was synthesized by a co-precipitation method. X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM) and transmission electron microscopy(TEM) methods were used for the characterization of the LDH nanocontainer. The anticorrosion activity of the LDH powders embedded in a hybrid sol-gel coating on aluminum alloy 2024 was investigated by electrochemical impendence spectroscopy(EIS). The results showed that Ce(III) ions were successfully incorporated into LDHs layers. The sol-gel coating modified with Ce-doped Zn-Al LDHs exhibited higher anticorrosion behavior compared with both unmodified and Ce-undoped LDHs containing coatings, which proved the applicability of Ce-doped LDHs in delaying coating degradation and their potential application as nanocontainers of corrosion inhibitors in self-healing coatings. 关键词：层状双金属氢氧化物溶胶-凝胶涂层 2024铝合金铈掺杂防腐活性锌铝傅里叶变换红外光谱

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Enhancement of Active Anticorrosion via Ce-doped Zn-Al Layered Double Hydroxides Embedded in Sol-Gel Coatings on Aluminum Alloy

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