C<sub>f</sub>/Cu/C复合材料的抗弯性能

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Abstract Using non-woven fabric/fibre web/copper mesh (A-type) and fibre web/copper mesh (B-type) as reinforcements, three kinds of C_f/Cu/C composites were prepared by chemical vapor infiltration and impregnation- carbonization with resin carbon method. The percentage of pyrolytic carbon were 38% (M1), 29% (M2), 19% (M3) in the matrix. Respectively the flexural property of the composite was measured on Instron- 3369 mechanical testing machine. The effects of type of preform and pyrolytic carbon content on mechanical property were investigated. The results show that with the decrease of pyrolytic carbon content, the flexural strength of A-type and B-type composites decreases gradually in vertical and parallel direction. For the same specimen, the flexural strength of C_f/Cu/C composites in the vertical direction is better than that of parallel direction, but the difference is small. Compared with B-type C_f/Cu/C composites, A-type C_f/Cu/C composites have better mechanical property. When the bending is carried out, carbon fibers from pyrolytic carbon and resin carbon layers are pulled out, and fracture morphology is step-like.

Key words： C_f/Cu/C composites C_f/Cu preform carbon fibre flecture property fracture mechanism

Received: 16 November 2018 Published: 12 July 2019

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	Articles by authors
	ZHANG Huan
	YIN Jian
	XIONG Xiang
	ZHANG Hongbo
	XU Ya’nan
	YANG Peng’ao

Cite this article:

ZHANG Huan,YIN Jian,XIONG Xiang, et al. Flexural property of C_f/Cu/C composites[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(2): 188-194.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I2/188

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