Homogenized joining of SiC ceramics using polycarbosilane via spark plasma sintering

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

Journal of The European Ceramic Society Pub Date : 2025-10-06 DOI:10.1016/j.jeurceramsoc.2025.117884

Tianxiang Zheng , Shuaiyu Shen , Ce Wang , Weibo Fu , Jiujie Xu , Qiuguang Zhang , Fugang Lu , Panpan Lin , Tiesong Lin , Peng He

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引用次数: 0

Abstract

The low coefficient of thermal expansion of SiC ceramics poses a significant challenge in selecting a compatible filler material for achieving high-quality joints. In this study, a composite adhesive was developed by blending vinylhydridopolycarbosilane (VHPCS) with nano-sized SiC particles to facilitate the pre-joining of SiC ceramics at 200 °C. The pre-assembled structures were subsequently joined using spark plasma sintering. The joining mechanism involves the use of VHPCS as an interlayer medium, where the application of elevated temperature and pulsed electric current promotes interfacial bonding between the joining layer and the SiC substrate. As a result, a homogeneous SiC ceramic joint, structurally compatible with the substrate, was successfully formed at 1700 °C. This approach provides a reliable joining technique for expanding the application of SiC ceramics in extreme environments.

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火花等离子烧结聚碳硅烷均匀连接SiC陶瓷

碳化硅陶瓷的低热膨胀系数给选择合适的填充材料以获得高质量的接头带来了很大的挑战。在本研究中，通过将乙烯基多聚碳硅烷（VHPCS）与纳米级SiC颗粒共混，开发了一种复合粘合剂，以促进SiC陶瓷在200℃下的预连接。随后使用火花等离子烧结将预组装的结构连接起来。连接机制涉及使用VHPCS作为层间介质，其中高温和脉冲电流的应用促进连接层与SiC衬底之间的界面键合。结果表明，在1700℃下，成功地形成了与衬底结构相容的均匀SiC陶瓷接头。该方法为扩大SiC陶瓷在极端环境下的应用提供了可靠的连接技术。

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.