A dual-layer ceramic coating based on silicon carbide and boron oxide on the graphite surface to establish high temperature oxidation resistance

IF 1.8 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of the Australian Ceramic Society Pub Date : 2024-04-14 DOI:10.1007/s41779-024-01019-5
Babak Alavi, Hossein Aghajani, Hosein Ehtesabi, Mahshid Mandani Marbini, Delaram Mahmoudi
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Abstract

In this work, to establish the oxidation resistance for graphite in the air atmosphere with temperatures ranging from 700 to 1000 °C, an innovative multi-component, dual-layer coating was developed. The coating consists of two layers with a total thickness of around 250 μm. The first layer was consisted of B2O3 with SiO2 and ZnO, while the second layer included SiC with silicon as an additive. Through scanning electron microscopy (SEM) images and elemental maps, alongside heat treatment experiments at 1000 °C, which resulted in only a 6% weight loss, it was evident that the coating was effectively applied and performed exceptionally well. Moreover, cyclic heat treatment experiments confirmed the coating’s durability and thermal stress resistance, with minimal weight reduction results. Applying these coatings is uncomplicated, and the materials are readily available, ensuring cost-effectiveness.

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在石墨表面形成基于碳化硅和氧化硼的双层陶瓷涂层,以建立高温抗氧化性
在这项工作中,为了确定石墨在温度为 700 至 1000 ℃ 的空气环境中的抗氧化性,开发了一种创新的多组分双层涂层。涂层由两层组成,总厚度约为 250 微米。第一层由 B2O3 与二氧化硅和氧化锌组成,而第二层则包括以硅作为添加剂的碳化硅。通过扫描电子显微镜(SEM)图像和元素分布图,以及在 1000 ℃ 下进行的热处理实验(该实验仅导致 6% 的重量损失),可以明显看出涂层的有效应用和优异性能。此外,循环热处理实验也证实了涂层的耐久性和抗热应力性,而且减重效果极佳。这些涂层的应用并不复杂,材料也很容易获得,确保了成本效益。
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来源期刊
Journal of the Australian Ceramic Society
Journal of the Australian Ceramic Society Materials Science-Materials Chemistry
CiteScore
3.70
自引率
5.30%
发文量
123
期刊介绍: Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted
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