Corrosion characteristics of PPY/GO/CuO nano-composite powder reinforced epoxy coatings on IF steel

IF 3.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Communications Pub Date : 2024-09-07 DOI:10.1016/j.mtcomm.2024.110376

Veerendra Kumar, S.K. Tiwari, Nitin Sharma

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Abstract

The present study has been designed to test the corrosion performance of epoxy based nano-composite coatings on Interstitial Free (IF) steel. PPy and PPy nano-composite powders were formed by polymerization of pyrrole using ferric chloride oxidant. PPy nano-composite powders were synthesized including Graphene oxide (GO) and Copper oxide (CuO) nano-particles. Four combinations have been undertaken in this study viz. pure PPy, PPy-GO (PG), PPy-CuO (PC) and PPy-GO-CuO (PGC). SEM/EDS and XRD results validated the uniform embedding of nano-particles in the pyrrole matrix during polymerization. Moreover, TGA analysis has also confirmed the enhancement of thermal stability of PPy with the incorporation of nano-particles. Further, epoxy (EP) powder was loaded with different concentration of synthesized composite powders to optimize the weight percent (wt%) of PPy, GO and CuO for testing the corrosion characteristics. The different coating configurations were applied on IF steel samples and electrochemical & salt spray testing have been conducted. It has been concluded that coating configuration EP/P2G0.5C1.0 has shown maximum corrosion protection efficiency () of approximately 99 %. Moreover, other three configurations EP/P2, EP/P2G0.5 and EP/P2C1.0 have also shown noteworthy results of of 85, 96 and 97 % respectively. SEM images for cross-sectional view of coatings have also confirmed the uniformity of coatings on to the IF steel. The suitability of these synthesized coatings has also been verified via adhesion test evidencing no significant change in adhesive strength.

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PPY/GO/CuO 纳米复合粉末增强环氧涂料对中频钢的腐蚀特性

本研究旨在测试环氧基纳米复合涂层在无间隙（IF）钢上的腐蚀性能。使用三氯化铁氧化剂聚合吡咯形成 PPy 和 PPy 纳米复合粉末。PPy 纳米复合粉末的合成包括氧化石墨烯（GO）和氧化铜（CuO）纳米颗粒。本研究采用了四种组合，即纯 PPy、PPy-GO (PG)、PPy-CuO (PC) 和 PPy-GO-CuO (PGC)。SEM/EDS 和 XRD 结果验证了聚合过程中吡咯基质中纳米颗粒的均匀嵌入。此外，TGA 分析也证实了纳米颗粒的加入增强了 PPy 的热稳定性。此外，在环氧树脂（EP）粉末中加入不同浓度的合成复合粉末，优化 PPy、GO 和 CuO 的重量百分比（wt%），以测试腐蚀特性。将不同的涂层配置应用于中频钢样品，并进行了电化学和盐雾测试。结果表明，EP/P2G0.5C1.0 涂层配置的最大腐蚀保护效率约为 99%。此外，其他三种配置 EP/P2、EP/P2G0.5 和 EP/P2C1.0 也分别显示出 85%、96% 和 97% 的显著效果。涂层横截面的 SEM 图像也证实了涂层在中频钢上的均匀性。这些合成涂层的适用性还通过附着力测试进行了验证，结果表明附着力没有明显变化。

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

Materials Today Communications Materials Science-General Materials Science

CiteScore

5.20

自引率

5.30%

发文量

1783

审稿时长

51 days

期刊介绍： Materials Today Communications is a primary research journal covering all areas of materials science. The journal offers the materials community an innovative, efficient and flexible route for the publication of original research which has not found the right home on first submission.