Effect of diffusion-assisting holes on the tensile properties of a thick-section two dimensional C/SiC composite fabricated by chemical vapor infiltration

Jiaxin Zhang, Yongsheng Liu, Yi Zhang, Jing Wang, Hui Zhao, Baoxi Zhang, Laifei Cheng

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

The concept of diffusion-assisting holes (DAHs)has been developed to increase matrix deposition in the middle layers of the thick-section ceramic matrix composites (CMCs)that are fabricated by chemical vapor infiltration (CVI). However, the effect of DAHs on the tensile properties of CMCs has not been studied. Here, the tensile properties and the state of matrix deposition of a 10-mm-thick two dimensional (2D)C/SiC with DAHs are investigated. Results showed, with DAHs, a zone of increased deposition with a radius of ca. 1.4 mm around a hole was introduced and the net-section strength of the 10-mm-thick 2D C/SiC was increased by 48.1%. In addition, the tensile load bearing capacity was also increased by 34.1%, although the load bearing section decreased with DAHs. The increased net-section strength and tensile load bearing capacity of the C/SiC are attributed to the increased matrix deposition in the middle layers of the thick-section composite.

源语言英语
页(从-至)13046-13051
页数6
期刊Ceramics International
45
10
DOI
出版状态已出版 - 7月 2019

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