The control of interfacial bonding state and optimization of mechanical properties of Si3N4f/BN/Si3N4 composites via different synthesis technologies

Jie Zhou, Laifei Cheng, Fang Ye, Litong Zhang, Yongsheng Liu, Xuefeng Cui, Zhiqiang Fu

科研成果: 期刊稿件文章同行评审

17 引用 (Scopus)

摘要

Silicon nitride fibers-reinforced silicon nitride matrix (Si3N4f/BN/Si3N4) composites with a BN interphase were fabricated by chemical vapor infiltration (CVI) and precursor infiltration pyrolysis (PIP). It is shown that PIP Si3N4f/BN/Si3N4 composites possessed better mechanical properties and achieved effectively interface debonding and fiber pull-out, whose flexural strength and fracture toughness can achieve 189 ± 17 MPa and 5.6 ± 0.6 MPa·m1/2, about twice and 1.5 times as much as those of CVI Si3N4f/BN/Si3N4 composites, respectively. Combining the micro-nano mechanical and macro-mechanical properties investigations, it is revealed that weakening the interfacial bond and achieving proper modulus matching relationship between fibers and matrix by PIP process could remarkably increase the mechanical properties of the Si3N4f/BN/Si3N4 composites, compared with CVI process.

源语言英语
页(从-至)1739-1746
页数8
期刊Journal of the European Ceramic Society
41
2
DOI
出版状态已出版 - 2月 2021

指纹

探究 'The control of interfacial bonding state and optimization of mechanical properties of Si3N4f/BN/Si3N4 composites via different synthesis technologies' 的科研主题。它们共同构成独一无二的指纹。

引用此