Exploring the corrosion inhibition of magnesium by coatings formulated with nano CeO and ZrO particles

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2023-06-30 DOI:10.4314/bcse.v37i5.20

V. K. Neela Murali, M. S. Starvin, J. Bensam Raj

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Abstract

ABSTRACT. In this study, zirconium oxide (ZrO)-cerium oxide (CeO) based composite coatings were fabricated using doctor blade method to protect pure magnesium from corrosion. The effects of ZrO and CeO on corrosion resistance of magnesium coatings were investigated using Tafel polarization method. Uniform deposition of composite coating without micro-voids was observed from scanning electron microscopy (SEM) analysis. The results exhibit that the addition of CeO show a higher corrosion resistance in comparison with the specimen coated without CeO in the electrolyte and bare Mg, and also it reduces the corrosion rate of Mg up to 3.67 x 10-5 mpy. Surface morphology of the so developed composite coating result a minimum corrosion on the surface. The usage of ZrO/CeO as coating material is a promising anticorrosive measure for Mg and its alloys due to its elevated corrosion resistance and durability. KEY WORDS: Magnesium, Cerium oxide synthesis, composite coating, Tafel polarization, Surface morphology Bull. Chem. Soc. Ethiop. 2023, 37(5), 1299-1306. DOI: https://dx.doi.org/10.4314/bcse.v37i5.20

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纳米CeO和ZrO颗粒涂层对镁的缓蚀作用研究

摘要。本研究采用刮刀法制备了氧化锆（ZrO）-氧化铈（CeO）基复合涂层，以保护纯镁免受腐蚀。采用Tafel极化法研究了ZrO和CeO对镁涂层耐蚀性的影响。通过扫描电子显微镜（SEM）分析观察到没有微孔的复合涂层的均匀沉积。结果表明，与在电解质和裸露的Mg中不涂覆CeO的试样相比，添加CeO显示出更高的耐腐蚀性，并且它还将Mg的腐蚀速率降低到3.67 x 10-5mpy。如此开发的复合涂层的表面形态导致表面腐蚀最小。使用ZrO/CeO作为涂层材料是镁及其合金的一种很有前途的防腐措施，因为它具有较高的耐腐蚀性和耐久性。关键词：镁，氧化铈合成，复合涂层，塔菲尔极化，表面形态公牛。化学。Soc.Ethiop。2023,37（5），1299-1306.DOI:https://dx.doi.org/10.4314/bcse.v37i5.20

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来源期刊

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.