镁锂合金二、三元层状双氢氧化物膜耐腐蚀性能的比较研究

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Transactions of the Indian Ceramic Society Pub Date : 2023-04-03 DOI:10.1080/0371750X.2023.2189624

Ju‐mei Zhang, Duo‐duo Lian, Mengchun Zhang, An‐rong Hou, Jia‐cheng Li, Teng Zhang

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引用次数: 0

摘要

采用水热合成法在LA103Z镁锂合金表面制备了层状双氢氧化物(Mg-Al和Mg-Al- co)薄膜。通过对比研究了二元LDH涂层和三元LDH涂层的耐蚀性。采用XRD、FTIR、SEM和EDS对两种膜的结构进行了表征，并通过极化曲线、EIS和在3.5 wt% NaCl溶液中的析氢速率对两种膜的耐蚀性进行了评价。结果表明，Mg-Al LDH薄膜与衬底结合紧密，有大量纳米片垂直生长，而Mg-Al- co LDH薄膜更薄，尺寸更小，纳米片数量更少。电化学测试结果表明，Mg-Al和Mg-Al- co LDH薄膜的极化电阻比衬底高两个数量级。氢气析出实验表明，两种膜的耐蚀性均较基体有所提高，并对基体起到保护作用，其中Mg-Al LDH层的耐蚀性优于Mg-Al- co LDH层。图形抽象

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Comparative Study on Corrosion Resistance of Binary and Ternary Layered Double Hydroxide Films on Magnesium Lithium Alloy

Layered double hydroxide (LDH) (Mg-Al and Mg-Al-Co) films were prepared on the surface of LA103Z magnesium-lithium alloy by hydrothermal synthesis method. Corrosion resistance of binary and ternary LDH coatings was studied by comparison. Structures of the two films were characterized using XRD, FTIR, SEM and EDS, and the corrosion resistance of the films was evaluated by polarization curve, EIS, and hydrogen evolution rate during immersion in 3.5 wt% NaCl solution. Results showed that Mg-Al LDH film was tightly bonded to the substrate and had a large number of nanosheets growing perpendicular to the substrate, while Mg-Al-Co LDH film was thinner with a smaller size and fewer nanosheets. Electrochemical test results showed that the polarization resistance of Mg-Al and Mg-Al-Co LDH films was two orders of magnitude higher than that of the substrate. Hydrogen precipitation experiments showed that corrosion resistance of both the films was improved compared to the substrate, and the films played a protective role for the substrate, among which the corrosion resistance of the Mg-Al LDH layer was better than that of the Mg-Al-Co LDH layer. GRAPHICAL ABSTRACT

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.