料浆刷涂针刺法制备C<sub>f</sub>/C-ZrB<sub>2</sub>复合材料及其力学性能

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Abstract In this paper, C_f/C-ZrB₂ composite material was prepared by natural graphite powder, ZrB₂ powder, alcohol-soluble phenolic resin powder, carbon fiber felt, carbon fiber latitude cloth, which involved the processes including slurry brushing, needle punching, temperature and pressure curing, high temperature carbonization process, as well as chemical vapor deposition. Density and porosity were tested by Archimedes drainage method, the impacts of slurry solid content on the distribution of matrix powder in the C_f/C-ZrB₂ porous body and mechanical properties of the composite material were tested by using scanning electron microscopy analysis and mechanical performance testing and other methods. The results show that increasing the solid content of the slurry improves the uniformity of the matrix powder distribution in the green body. The mechanical properties of the material increase first and then decrease with the increase of the solid content. When the volume fraction of the solid phase of the slurry is 15%, the bending strength reaches 121.86 MPa.

Key words： C_f/C-ZrB₂ slurry needling composite material chemical vapor infiltration bending strength

Received: 20 January 2021 Published: 21 July 2021

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	SHI Qi
	LI Guodong
	WANG Yang
	JIANG Yi

Cite this article:

SHI Qi,LI Guodong,WANG Yang, et al. Preparation and mechanical property of C_f/C-ZrB₂ composite material by slurry brushing and needle punching[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(3): 278-284.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I3/278

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