| PIP工艺制备2D C/SiC复合材料Z-向穿刺工艺 |
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| 引用本文： | 王其坤,胡海峰,陈朝辉,张玉娣,罗征. PIP工艺制备2D C/SiC复合材料Z-向穿刺工艺[J]. 稀有金属材料与工程, 2009, 38(Z2) |
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| 作者姓名： | 王其坤 胡海峰 陈朝辉 张玉娣 罗征 |
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| 作者单位： | 国防科学技术大学,湖南,长沙,410073 |
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| 摘 要： | 针对2D C/SiC复合材料存在碳布层间缺乏纤维增强,层间结合较差的问题,提出通过Z-向穿刺工艺提高碳布层间结合,克服材料使用时可靠性不高的问题,并比较了穿刺工艺对复合材料微观结构和力学性能的影响.结果表明,通过Z-向穿刺工艺制得试样2D C/SiC-Z_(pin)的弯曲强度、弯曲模量和剪切强度分别为247.8 MPa、37.8 GPa和32.1 MPa,而未穿刺试样2D C/SiC的弯曲强度、弯曲模量和剪切强度分别只有219.3 MPa、34.4 GPa和23.3 MPa,由此可见,采用Z-向穿刺工艺能明显提高复合材料的力学性能.微观结构分析认为,试样力学性能提高的根本原因在于采用Z-向穿刺纤维加强了碳布层间结合,使材料具有较好的整体性,克服了复合材料层间结合较弱对力学性能带来的不利影响.
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| 关 键 词： | Z-向穿刺 微观结构 力学性能 |
Z-pin Process Investigation of 2D C/SiC Composites via Precursor Infiltration and Pyrolysis |
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| Wang Qikun,Hu Haifeng,Chen Zhaohui,Zhang Yudi,Luo Zheng. Z-pin Process Investigation of 2D C/SiC Composites via Precursor Infiltration and Pyrolysis[J]. Rare Metal Materials and Engineering, 2009, 38(Z2) |
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| Authors: | Wang Qikun Hu Haifeng Chen Zhaohui Zhang Yudi Luo Zheng |
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| Affiliation: | Wang Qikun,Hu Haifeng,Chen Zhaohui,Zhang Yudi,Luo Zheng (National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | In order to improve the poor laminar shear strength of 2D C/SiC composites without in-depth carbon fiber reinforcement,a novel proposal to increase shear strength by introducing Z-pin carbon fiber was presented,and accordingly effect of Z-pin process on the microstructure and mechanical properties of C/SiC-Zpin was investigated. The results show that the flexural strength,flexural modulus and shear strength of 2D C/SiC-Zpin composites were 247.8 MPa,37.8 GPa and 32.1 MPa,respectively,while those of 2D C/SiC... |
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| Keywords: | 2D C/SiC 2D C/SiC Z-pin microstructure mechanical property |
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