A comparative study on microstructure evolution and mechanical properties of two ceramic fiber fabrics : Effects of thermal treatment
发布时间：2025-04-11
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DOI码：10.1111/ijac.15142
发表刊物：International Journal of Applied Ceramic Technology
摘要：Owing to their superior mechanical properties and low thermal conductivity, oxide ceramic fabrics (OCFs) containing an amorphous phase exhibit significant potential as thermal insulation material. However, the amorphous component is metastable, necessitating an investigation into the thermal stability of OCFs. Here, we comparatively investigated the microstructure and mechanical proper- ties of two OCFs after thermal treatments. One OCF was composed of a ternary Al2O3-SiO2-B2O3 glass, while the other binary OCF comprised Al2O3 nanocrys- tallites embedded within a SiO2 glass matrix. Results demonstrated that the crystallization of Al4B2O9 occurred during the thermal treatment of the ternary OCFs, subsequently transforming into Al18B4O33.The SiO2 persisted as a glass matrix up to 1300◦C. In contrast, the binaryOCF retained itsmicrostructure up to 1100◦C. After being treated at 1300◦C, the binary OCF predominantly consisted of mullite micrograins, without the presence of amorphous phase. The flexural strength ofthe two OCFs decreased as the treatment temperature increased, and they lost their bendability due to the formation ofa substantial number ofcrystal- lites. This study underscores the significant impacts of thermal treatment on the microstructure andmechanical properties ofOCFs with amorphous component.
合写作者：Zihua Lei, Mingxi Deng, Wenjun Yu
第一作者：Le Fu*
是否译文：否
发表时间：2025-04-11
发布期刊链接：https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijac.15142