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含有机缓蚀剂的环保型溶胶-凝胶涂层用于轻质AZ61合金

Eco-Friendly Sol-Gel Coatings with Organic Corrosion Inhibitors for Lightweight AZ61 Alloy.

作者信息

Domínguez-Martínez Jorge, López-Sánchez Jesús, García-Galván Federico, Serrano Aída, Barranco Violeta, Galván Juan Carlos, Rodríguez de la Fuente Óscar, Carmona Noemí

机构信息

Department of Materials Physics, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain.

Department of Electroceramics, Instituto de Cerámica y Vidrio (ICV-CSIC), 28049 Madrid, Spain.

出版信息

Gels. 2024 Feb 27;10(3):168. doi: 10.3390/gels10030168.

DOI:10.3390/gels10030168
PMID:38534586
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10970110/
Abstract

The latest advances in technology and materials science have catalyzed a transformative shift towards the adoption of environmentally conscious and lightweight materials across key sectors such as aeronautics, biomedical, and automotive industries. Noteworthy among these innovations are the magnesium-aluminum (Mg-Al) alloys employed in aeronautical applications, contributing to the overall reduction in aircraft weight and subsequently diminishing fuel consumption and mitigating atmospheric emissions. The present work delves into a study of the anti-corrosive properties inherent in various sol-gel coatings, leveraging a range of environmentally friendly corrosion inhibitors, specifically tailored for samples of the AZ61 alloy. Methodologically, the work involves the synthesis and application of sol-gel coatings on AZ61 alloy containing eco-friendly inhibitors: L-cysteine, N-acetyl-cysteine, curcumin and methylene blue. Subsequently, an accelerated corrosion test in a simulated saline environment is performed. Through microstructural and compositional analyses, the best inhibitors responses are achieved with inhibitors containing S, N heteroatoms and conjugated double bonds in their structure, probably due to the creation of a continuous MgCl layer. This research contributes to the ongoing discourse on protective eco-coatings, aligning with the broader paradigm shift towards sustainable and lightweight materials in key industries.

摘要

技术和材料科学的最新进展推动了一场变革性转变，促使航空、生物医学和汽车等关键行业采用环保且轻质的材料。这些创新中值得注意的是用于航空应用的镁铝合金，有助于减轻飞机整体重量，进而降低燃油消耗并减少大气排放。本研究深入探讨了各种溶胶 - 凝胶涂层所固有的防腐性能，利用一系列专门为AZ61合金样品量身定制的环保型缓蚀剂。从方法上讲，这项工作涉及在含生态友好型缓蚀剂（L - 半胱氨酸、N - 乙酰 - 半胱氨酸、姜黄素和亚甲蓝）的AZ61合金上合成并应用溶胶 - 凝胶涂层。随后，在模拟盐环境中进行加速腐蚀试验。通过微观结构和成分分析，发现结构中含有S、N杂原子和共轭双键的缓蚀剂能产生最佳的缓蚀效果，这可能是由于形成了连续的MgCl层。这项研究为正在进行的关于环保防护涂层的讨论做出了贡献，与关键行业向可持续和轻质材料的更广泛范式转变相一致。

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Self-assembly of iron oxide precursor micelles driven by magnetic stirring time in sol-gel coatings.溶胶-凝胶涂层中通过磁力搅拌时间驱动的氧化铁前驱体胶束的自组装。
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