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Role of low-dimensional carbon nanostructures in hybrid material as anticorrosive coating
Progress in Organic Coatings ( IF 6.6 ) Pub Date : 2022-01-04 , DOI: 10.1016/j.porgcoat.2021.106682
A.F. Betancur-Lopera 1 , E.A. Huitrón-Segovia 2, 3 , J. Cabral Miramontes 4 , M.A. Esneider Alcalá 2 , J.A. Arizpe Zapata 2, 3 , F.R. Pérez 1 , A. Garcia-Garcia 2, 3
Affiliation  

In this work, different low-dimensional carbon nanostructures (graphite oxide, graphene oxide and amino-functionalized graphene oxide and graphite oxide) integrated into a hybrid, organic-inorganic matrix, were developed, obtaining different nanocomposite coatings. The hybrid matrix was obtained from an inorganic component, tetraethyl orthosilicate, and an organic composition resin, diglycidyl ether bisphenol-A. Each of the different coatings were separately applied on AISI 1018 carbon steel surfaces. The corrosion test was carried out by Electrochemical Impedance Spectroscopy on the coated metal in two different media, saline and acidic. The resistance to charge transfer was higher for coating containing graphene oxide in both electrolytes. A comparison between the coating's performance containing graphite oxide and graphene oxide showed that the exfoliation of graphite oxide is important to have a greater distribution and intercalation of the low dimensionality sheets inside the hybrid matrix up to form a uniform protective barrier. Wear test were carried out and structural stability of the coatings after 100 cycles was demonstrated, showing the persistent Sisingle bondOsingle bondSi groups produce a protection against corrosion to AISI 1018 carbon steel.



中文翻译:

低维碳纳米结构在杂化材料中作为防腐涂层的作用

在这项工作中,开发了不同的低维碳纳米结构(氧化石墨、氧化石墨烯和氨基功能化的氧化石墨烯和氧化石墨),这些结构集成到混合的有机-无机基质中,获得了不同的纳米复合涂层。混合基质由无机组分原硅酸四乙酯和有机组合物树脂二缩水甘油醚双酚 A 获得。每种不同的涂层分别涂在 AISI 1018 碳钢表面上。腐蚀测试是通过电化学阻抗光谱法对涂层金属在盐水和酸性两种不同介质中进行的。在两种电解质中都含有氧化石墨烯的涂层的电荷转移阻力更高。涂层之间的比较' 含有氧化石墨和氧化石墨烯的性能表明,氧化石墨的剥离对于混合基质内部低维片的更大分布和嵌入非常重要,以形成均匀的保护屏障。进行了磨损试验,并证明了涂层在 100 次循环后的结构稳定性,显示出持久的 Si单键O 单键Si 基团对 AISI 1018 碳钢产生腐蚀保护。

更新日期:2022-01-04
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