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Self-Repairing Composites for Corrosion Protection: A Review on Recent Strategies and Evaluation Methods

机译:用于腐蚀防护的自修复复合材料:近期策略和评估方法的综述

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摘要

The use of self-healing coatings to protect metal substrates, such as aluminum alloys, stainless steel, carbon steel, and Mg alloys from corrosion is an important aspect for protecting metals and for the economy. During the past decade, extensive transformations on self-healing strategies were introduced in protective coatings, including the use of green components. Scientists used extracts of henna leaves, aloe vera, tobacco, etc. as corrosion inhibitors, and cellulose nanofibers, hallyosite nanotubes, etc. as healing agent containers. This review gives a concise description on the need for self-healing protective coatings for metal parts, the latest extrinsic self-healing strategies, and the techniques used to follow-up the self-healing process to control the corrosion of metal substrates. Common techniques, such as accelerated salt immersion test and electrochemical impedance spectroscopy (EIS), for evaluating the self-healing process in protective coatings are explained. We also show recent advancements procedures, such as scanning vibrating electrode technique (SVET) and scanning electrochemical microscopy (SECM), as successful techniques in evaluating the self-healing process in protective coatings.
机译:使用自修复涂层来保护金属基材(例如铝合金,不锈钢,碳钢和镁合金)免受腐蚀是保护金属和经济的重要方面。在过去的十年中,防护涂料引入了自愈策略的广泛转变,包括绿色成分的使用。科学家使用指甲花叶,芦荟,烟草等提取物作为缓蚀剂,并使用纤维素纳米纤维,埃洛石纳米管等作为愈合剂容器。这篇综述简要描述了金属零件的自修复保护涂层的需求,最新的外部自修复策略以及用于跟踪自修复过程以控制金属基材腐蚀的技术。解释了用于评估保护涂层中自愈过程的常用技术,例如加速盐浸测试和电化学阻抗谱(EIS)。我们还显示了最新的改进程序,例如扫描振动电极技术(SVET)和扫描电化学显微镜(SECM),作为评估保护涂层中自修复过程的成功技术。

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