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SiC-conversion coating from silica sol for improved oxidation resistance of carbon-fiber insulator in solar-cell ingot-growing crucibles
Thin Solid Films ( IF 2.1 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.tsf.2019.137748
Su-Bin Ahn , Minh Dat Nguyen , Jung-Won Bang , Younghee Kim , Yoonjoo Lee , Dong-Geun Shin , Woo-Teck Kwon

Abstract Carbon fibers, which have excellent mechanical and thermal properties, are used in many fields; however, they are very vulnerable to oxidation and have limited service life. Various studies have attempted to address this. In this study, a SiC–C composite material was prepared using a silica sol to coat the carbon surface and improve the oxidation resistance of a carbon-fiber insulator as a material for solar-cell ingot-growing crucibles. The SiC coating was formed on the carbon surface under various conditions by controlling the composition of the silica sol, and its characteristics were examined. Via SiC-conversion coating through a carbothermal reaction, a film of thickness 30–80 nm film was uniformly formed over the entire sample. In addition, the oxidation characteristics were enhanced by a factor of three to five, when compared with conventional carbon materials.

中文翻译:

用于提高太阳能电池铸锭坩埚中碳纤维绝缘体抗氧化性的硅溶胶 SiC 转化涂层

摘要 碳纤维具有优良的机械性能和热性能,被用于许多领域。然而,它们非常容易氧化并且使用寿命有限。各种研究试图解决这个问题。在这项研究中,使用硅溶胶制备 SiC-C 复合材料以涂覆碳表面并提高碳纤维绝缘体的抗氧化性,作为太阳能电池铸锭生长坩埚的材料。通过控制硅溶胶的组成,在各种条件下在碳表面形成碳化硅涂层,并研究其特性。通过碳热反应的 SiC 转化涂层,在整个样品上均匀地形成了一层厚度为 30-80 nm 的薄膜。此外,氧化特性提高了三到五倍,
更新日期:2020-01-01
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