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所属单位：Shandong University, Weihai

发表刊物：Journal of the European Ceramic Society

关键字：Three-dimensional graphene oxide-carbon nanotubeSilicon carbideDirect ink writingLiquid silicon infiltration

摘要：This paper proposes the preparation of a silicon carbide ceramic matrix composite toughened with three-dimensional graphene oxide-carbon nanotubes (3D GO-CNT) using direct ink writing and liquid silicon infiltration processes. The research focuses on the microstructure and mechanical properties of the composite, emphasizing the toughening impact of varied GO-CNT ratios. When the GO-CNT ratio was 1:2, the mechanical properties of the material were optimal, with a flexural strength of 337.4 MPa and a fracture toughness of 4.58 MPa · m1/2, which were enhanced by 40.9% and 34.7%, respectively, compared to that of the pure silicon carbide matrix. Graphene oxide and carbon nanotubes can act as dispersants for each other enabling them to be uniformly distributed in the matrix. Key toughening mechanisms include GO/CNT pull-out, multiple microcracks, crack bridging, deflection, and branching. This study promises to significantly improve the mechanical properties of 3D printed SiC composites, assisting their potential applications in aerospace engineering.

全部作者：Kan Wang

第一作者：Haichao Xu

论文类型：Research Paper

通讯作者：Yong Liu

论文编号：10.1016/j.jeurceramsoc.2024.03.046

文献类型：Journal article

卷号：44

期号：10

页面范围：5612-5622

ISSN号：0955-2219

是否译文：否

发表时间：4550-05-01