A ceramization strategy of alumina fiber reinforced composites modified with TiCN and B4C: Enhanced mechanical robustness, ablation resistance and thermal insulation

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-07-01 DOI:10.1016/j.jeurceramsoc.2025.117645

Bo Xu , Fengyi Wang , Minxian Shi , Zhixiong Huang

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引用次数: 0

Abstract

Alumina fiber reinforced composites (AFC) have attracted massive attention in thermal protection materials due to their excellent high temperature mechanical properties. However, the application of the AFCs is restricted by their easy failure at high temperature condition for the sake of phase transition and grain growth. In this work, a series of alumina fiber based ceramizable composites modified with TiCN and B₄C were prepared. The thermal stability, phase evolution, thermal insulation performance and anti-ablation mechanism of the composites were investigated. The flexural strength and residual weight yield of obtained ceramizable composite after static ablation at 1200 ℃ was 22.3 MPa and 85.8 %, showing obvious enhancement compared with those of the composite without ceramic fillers. The good ablation resistance and high temperature bearing capacity of the composites can be attributed to the formation of protective layer of rutile phase TiO₂ and the grain-refining effect of ceramic phase.

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用TiCN和B4C改性氧化铝纤维增强复合材料的陶瓷化策略：增强机械坚固性、抗烧蚀性和绝热性

氧化铝纤维增强复合材料（AFC）因其优异的高温力学性能而在热防护材料中受到广泛关注。但由于其在高温条件下易发生相变和晶粒生长而导致失效，限制了其应用。本文制备了一系列以TiCN和B4C改性的氧化铝纤维基陶瓷复合材料。研究了复合材料的热稳定性、相演化、保温性能和抗烧蚀机理。经1200℃静烧蚀得到的陶化复合材料抗弯强度为22.3 MPa，剩余重量率为85.8 %，与未添加陶瓷填料的复合材料相比有明显提高。复合材料具有良好的抗烧蚀性能和高温承载能力，主要归功于金红石相TiO2保护层的形成和陶瓷相晶粒细化的作用。

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

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.