Effects of in situ formed nanostructures on the structure and properties of C/SiOC composites

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2024-04-10 DOI:10.1111/jace.19819

Yuhang Zhao, Lei Guo, Qingsong Ma

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Abstract

In this paper, Ni was introduced into the matrix of carbon fiber reinforced SiOC (C/SiOC) composites by the precursor infiltration and pyrolysis method to catalyze the generation of in situ formed nanostructures including carbon nanotubes (CNTs), turbostratic carbon, and SiC. The effect of in situ formed nanostructures catalyzed by Ni on the properties of the C/SiOC composites was investigated. The results demonstrated that the presence of in situ formed nanostructures in the matrix improved the densification and mechanical properties of C/SiOC composites. In addition, the incorporation of in situ formed nanostructures facilitated the formation of thermal conductivity pathways within the composites, thereby enhancing the thermal conductivity of C/SiOC composites. Furthermore, in situ formed nanostructures-containing C/SiOC composites developed a carbon friction layer comprising CNTs and turbostratic carbon, which significantly enhanced the abrasion resistance, endowing C/SiOC composites stable friction coefficients, and lower levels of wear.

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原位形成的纳米结构对 C/SiOC 复合材料结构和性能的影响

本文通过前驱体浸润和热解方法，在碳纤维增强 SiOC（C/SiOC）复合材料基体中引入镍，催化原位生成纳米结构，包括碳纳米管（CNT）、湍流碳和 SiC。研究了在镍催化下原位形成的纳米结构对 C/SiOC 复合材料性能的影响。结果表明，基体中原位形成的纳米结构改善了 C/SiOC 复合材料的致密性和机械性能。此外，原位形成的纳米结构的加入促进了复合材料内部导热通道的形成，从而提高了 C/SiOC 复合材料的导热性。此外，含有原位形成的纳米结构的 C/SiOC 复合材料形成了由 CNT 和湍流碳组成的碳摩擦层，从而显著提高了耐磨性，使 C/SiOC 复合材料具有稳定的摩擦系数和较低的磨损水平。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.

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