Effect of porous C/C substrate density on compressive property of C/C-Cu composites

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[1] Yin, Jian
[2] Zhang, Hong-Bo
[3] Xiong, Xiang
[4] Tan, Cui
[5] Lu, Cai-Tao
来源
Yin, Jian | 1600年 / Central South University卷 / 19期
关键词
C/C composites - Carbon fiber reinforced carbon - Compressive properties - Different densities - Porous carbon/carbon composites - Substrate density - Tensile testing machines - Vertical direction;
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摘要
Carbon fiber reinforced carbon and copper (C/C-Cu) composites were prepared by a combination of chemical vapor infiltration (CVI) and melt copper impregnation by pressure. 3 kinds of C/C-Cu composites with different densities of porous carbon/carbon composites (C/C substrates) were prepared and their compressive properties were tested on CSS-44100 electronic tensile testing machine. The effect of C/C substrate density on compressive property of C/C-Cu composites was studied. The results show that C/C-Cu composites have high compressive strengths, which have small differences between parallel and vertical direction. With the increase of the C/C substrate density, the compressive strength of C/C-Cu composites increases and the anisotropy improves. The one with highest density has the highest compressive strength of 323.8 and 326.6 MPa. The composites are shearing along with 45° diagonal line in vertical direction, while destroyed by delaminating split in parallel direction.
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