Excellent performance of dodecyl dimethyl betaine and calcium gluconate as hybrid corrosion inhibitors for Al alloy in alkaline solution

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2022-10-01 DOI:10.1016/j.corsci.2022.110556

Wenyue Zhang , Daquan Zhang , Xiaohui Li , Chunping Li , Lixin Gao

引用次数: 15

Abstract

Dodecyl dimethyl betaine (BS-12) and calcium gluconate (CaGlu) are examined as hybrid corrosion inhibitors for AA5052 aluminum alloy in 4 M NaOH electrolyte. The corrosion inhibition is investigated by hydrogen evolution tests, electrochemical measurements, surface analysis, and theoretical calculation. It demonstrates that the hybrid inhibitors can protect aluminum alloy effectively. CaGlu has a good coordination effect with aluminum ions. The hydrophilic group of BS-12 can occupy the active sites on the aluminum alloy/solution interface. The hydrophobic alkyl chain can further enhance the corrosion inhibition effect. The maximum corrosion inhibition efficiency reaches 86.3% at 1 mM BS-12 + 3 mM CaGlu.

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十二烷基二甲基甜菜碱和葡萄糖酸钙在碱性溶液中作为铝合金的复合缓蚀剂具有优异的性能

研究了十二烷基二甲基甜菜碱(BS-12)和葡萄糖酸钙(CaGlu)在4 M NaOH电解质中作为AA5052铝合金的复合缓蚀剂。通过析氢试验、电化学测量、表面分析和理论计算研究了其缓蚀作用。结果表明，杂化抑制剂能有效地保护铝合金。CaGlu与铝离子具有良好的配位效应。BS-12的亲水性基团可以占据铝合金/溶液界面上的活性位点。疏水烷基链能进一步增强缓蚀效果。在1 mM BS-12 + 3 mM CaGlu条件下，缓蚀效率达到86.3%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.