碳纤维增强磷酸盐复合材料的制备与力学性能

doi:10.19976/j.cnki.43-1448/TF.2021093

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Abstract Phosphate slurries were prepared using aluminum dihydrogen phosphate solution and Al₂O₃/ZrO₂. C_f/phosphate composites with phosphate as matrix and carbon fiber as reinforcing phase were prepared by paste brushing carbon fibers-laminated needling-hot pressing-vacuum impregnation-hot pressing densification process. The microstructure and phase of the composites were characterized by scanning electron microscopy and X-ray diffraction analysis. The properties of the composites such as density, open porosity and flexural strength were measured, and the effects of Al₂O₃ content and ZrO₂ on the green body and composites were studied. The results show the highest density of C_f/phosphate composites reaches 2.27 g/cm³, and the lowest open porosity is 13.4%. The oxide content affects the mechanical properties of the composites. When m(Al(H₂PO₄)₃):m(Al₂O₃):m(ZrO₂) is 200:100:10, the average flexural strength of the composite is 122 MPa, and the flexural strength of the composite is 38 MPa after treatment at 600 ℃ for 30 min.

Key words： slurry needle punching carbon fiber phosphate composite mechanical property heat treatment

Received: 10 November 2021 Published: 19 July 2022

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	Articles by authors
	YU Shijie
	LI Guodong
	WANG Yang
	JIANG Yi

Cite this article:

YU Shijie,LI Guodong,WANG Yang, et al. Preparation and mechanical properties of carbon fiber reinforced phosphate composites[J]. Materials Science and Engineering of Powder Metallurgy, 2022, 27(3): 302-309.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2021093 OR http://pmbjb.csu.edu.cn/EN/Y2022/V27/I3/302

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