Potential of Composite Incorporation on the Mechanical Behavior of Multilayer Coatings

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-01-01 DOI:10.4152/pea.2021390301

O. Joseph, O. Fayomi, A. O. Inegbenebo, A. Ayoola

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Abstract

In this paper, the performance of a composite particle for the deposition of ZnO/Cr2O3 on a zinc electrolyte was examined. Its susceptibility to corrosion in 3.5% NaCl, using linear polarization, was investigated. The developed crystal was characterized by using scanning electron microscope (SEM) equipped with an energy dispersive spectrometer (EDS). The strengthening properties of the coated samples, i.e. the mechanical response, were studied using a high sensitive diamond microhardness indenter and a MTR-300 rigid wear tester. From the results, the effect of the composite coatings interestingly influenced the performance regarding microhardness, durability, corrosion mitigation and wear damage. In general, the micro-hardness value for the Zn-ZnO material was 125.0 HVN, while it was 130.5 HVN for Zn-8ZnO-16Cr2O3 composite coating. For Zn-8ZnO-20Cr2O3, a better hardness performance was noted with 138.0 HVN. From the wear study, Zn-8ZnO shows 0.018 g/min dissociation against the counter body with the best wear performance obtained at 0.005 g/min. The corrosion properties of the developed composite coating also tend towards a more positive region, with a corrosion rate of 0.850 mm/yr. This shows that the role of composite particulates maximally contributes to improve the strengthening characteristics of the developed coating.

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复合材料掺入对多层涂层力学性能的影响

本文研究了复合颗粒在锌电解液上沉积ZnO/Cr2O3的性能。采用线极化法研究了其在3.5% NaCl中的腐蚀敏感性。利用扫描电子显微镜(SEM)和能谱仪(EDS)对制备的晶体进行了表征。采用高灵敏度金刚石微硬度压头和MTR-300刚性磨损试验机研究了涂层试样的强化性能，即力学响应。结果表明，复合涂层对合金的显微硬度、耐久性、缓蚀性和磨损损伤性能有显著影响。总的来说，Zn-ZnO材料的显微硬度值为125.0 HVN，而Zn-8ZnO-16Cr2O3复合涂层的显微硬度值为130.5 HVN。对于Zn-8ZnO-20Cr2O3, 138.0 HVN的硬度性能较好。从磨损研究来看，Zn-8ZnO对对抗体的解离速率为0.018 g/min，在0.005 g/min时获得最佳磨损性能。复合涂层的腐蚀性能也趋向于更正的区域，腐蚀速率为0.850 mm/yr。这表明复合颗粒的作用最大程度地提高了涂层的强化性能。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.