A bimodified MgAlCe-LDHs@GO self-healing anti-corrosion coating based on the micro arc oxidation coating of AZ31 magnesium alloy

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-02-19 DOI:10.1016/j.corsci.2025.112805
Zuojun Jiao , Yan Zhou , Xiaowei Dai , Jiahao Wu , Yonghua Chen , Mingyi Wu , Wenhui Yao , Yuan Yuan , Zhihui Xie , Yanlong Ma , Atrens Andrej , Liang Wu
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Abstract

To obtain magnesium (Mg) alloys with long-term corrosion resistance, coatings with enhanced stability and self-healing effect are necessary. This study in-situ produced a layered double hydroxides (LDHs) coating using hydrothermal method to process the cerium salt treated micro arc oxidation (MAO) coating in sodium dodecylbenzene sulfonate (SDBS)-modified graphene oxide (GO) solution (MgAlCe-LDHs@GO-SDBS), and further introduced 3,5-dinitrosalicylic (D) acid and quinolizic acid (Q) via anion-exchange method. The multiple effects of Ce, GO-SDBS, and corrosion inhibitors significantly enhanced the coatings’ anti-corrosive and self-healing performance. The MgAlCe-LDHs@GO-S&D coating possessed significantly decreased corrosion current density of 3.6 × 10−9 A·cm−2.
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基于AZ31镁合金微弧氧化涂层的双改性MgAlCe-LDHs@GO自愈防腐涂层
为了获得具有长期耐腐蚀性能的镁合金,需要具有增强稳定性和自愈作用的涂层。本研究采用水热法在十二烷基苯磺酸钠(SDBS)改性氧化石墨烯(GO)溶液(MgAlCe-LDHs@GO-SDBS)中原位制备了层状双氢氧化物(LDHs)涂层,并进一步通过阴离子交换法引入3,5-二硝基水杨酸(D)和喹啉酸(Q)。Ce、GO-SDBS和缓蚀剂的多重作用显著增强了涂层的抗腐蚀和自修复性能。MgAlCe-LDHs@GO-S&;D涂层的腐蚀电流密度显著降低,为3.6 × 10−9 A·cm−2。
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来源期刊
Corrosion Science
Corrosion Science 工程技术-材料科学:综合
CiteScore
13.60
自引率
18.10%
发文量
763
审稿时长
46 days
期刊介绍: Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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