Development and experimental verification of innovative corrosion protection epoxy coatings for steel

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-07-28 DOI:10.1108/acmm-04-2023-2793

A. Balachandra, R. Nassar, P. Soroushian

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引用次数: 1

Abstract

Purpose This study aims to report the development and experimental evaluation of three innovative corrosion-resistant modified epoxy coatings, namely, nanocomposite/toughened, self-healing and hybrid epoxy coatings, for application on steel substrates. Design/methodology/approach The corrosion resistance of these coatings was evaluated in a highly corrosive environment of salt fog spray for 2,500 h of exposure. Electrochemical impedance spectroscopy (EIS) measurements in sustained exposure to NaCl in a saturated Ca(OH)2 solution, rust creepage measurements at the location of scribe formed in the coatings and adhesion strength test were used to assess the performance of the innovative coatings. Commercially available marine-grade protective epoxy coatings were used as the reference coatings. Findings The test results showed that the modified epoxy coatings exhibited excellent corrosion resistance when exposed to an aggressive environment for extended periods. The EIS measurements, rust creepage measurements, pull-off strength and visual appearance of the aged modified–epoxy–coated specimens confirmed the enhanced corrosion resistance of the modified epoxy coatings. Originality/value Among the three types of modified coatings, the hybrid epoxy coating stands out to be the best performer.

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新型钢用环氧防腐涂料的研制与试验验证

目的研究了纳米复合/增韧改性环氧涂料、自愈改性环氧涂料和混合改性环氧涂料三种新型耐腐蚀改性环氧涂料的研制及实验评价。设计/方法/方法这些涂层的耐腐蚀性在盐雾喷雾的高腐蚀性环境中进行了2500小时的暴露评估。在饱和Ca(OH)2溶液中持续暴露于NaCl的电化学阻抗谱(EIS)测量、涂层中形成的划痕位置的锈蚀爬电测量以及粘附强度测试来评估创新涂层的性能。采用市售的船用环氧防护涂料作为参考涂料。试验结果表明，改性环氧涂料在长时间暴露于侵蚀性环境中表现出优异的耐腐蚀性。老化改性环氧涂层试样的EIS测量、锈蠕电测量、拉脱强度和视觉外观证实了改性环氧涂层的耐腐蚀性增强。原创性/价值在三种改性涂料中，混合环氧涂料表现最好。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.