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Progress of research on gallic acid in corrosion inhibition and rust removal protection of metals

ANTI-CORROSION METHODS AND MATERIALS(2023)

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摘要
Purpose - Gallic acid is a substance that is widely found in nature. Initially, it was only used as a corrosion inhibitor to retard the rate of corrosion of metals. In recent years, with intensive research by scholars, the modification of coatings containing gallic acid has become a hot topic in the field of metal protection. This study aims to summarize the various preparation methods of gallic acid and its research progress in corrosion inhibitors and coatings, as well as related studies using quantum chemical methods to assess the predicted corrosion inhibition effects and to systematically describe the prospects and current status of gallic acid applications in the field of metal corrosion inhibition and protection. Design/methodology/approach - First, the various methods of preparation of gallic acid in industry are understood. Second, the corrosion inhibition principles and research progress of gallic acid as a metal corrosion inhibitor are presented. Then, the corrosion inhibition principles and research progress of gallic acid involved in the synthesis and modification of various rust conversion coatings, nano-coatings and organic resin coatings are described. After that, studies related to the evaluation and prediction of gallic acid corrosion inhibition on metals by quantum chemical methods are presented. Finally, new research ideas on gallic acid in the field of corrosion inhibition and protection of metals are summarized. Findings - Gallic acid can be used as a corrosion inhibitor or coating in metal protection. Research limitations/implications - There is a lack of research on the synergistic improvement of gallic acid and other substances. Practical implications - The specific application of gallic acid in the field of metal protection was summarized, and the future research focus was put forward. Originality/value - To the best of the authors' knowledge, this paper systematically expounds on the research progress of gallic acid in the field of metal protection for the first time and provides new ideas and directions for future research.
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关键词
corrosion inhibition,gallic acid,rust removal protection
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