SiC nanowire reinforced carbon/carbon composites with improved interlaminar strength

被引：31

作者：

Shen Qingliang ^{[1
]}

Li Hejun ^{[1
]}

Li Lu ^{[1
]}

Li Yunyu ^{[1
]}

Fu Qiangang ^{[1
]}

Lin Hongjiao ^{[1
]}

Song Qiang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Carbon Carbon Composites Res Ctr, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 651卷

基金：

中国国家自然科学基金;

关键词：

Carbon-carbon composites (CCCs); Microstructures; Strength; Chemical vapor deposition (CVD); CHEMICAL-VAPOR-DEPOSITION; CARBON NANOTUBE GROWTH; C/C-COMPOSITES; PYROLYTIC CARBON; PYROCARBON; CHEMISTRY; KINETICS; MICROSTRUCTURE; TENSILE; FIBERS;

D O I：

10.1016/j.msea.2015.10.114

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SiC nanowires with surface dentations were in-situ grown on carbon fiber cloths and then they were stacked to form 2D carbon preform. After that, the preform was densified via chemical vapor infiltration to prepare SiC nanowire reinforced carbon/carbon (SiCNW-C/C) composites. Introduced SiC nanowires significantly change the crystallite orientations of pyrocarbon matrix. Coaxial pyrocarbon with higher optical activity and larger crystallite size has been deposited around the nanowires. The interlaminar shear strength of SiCNW-C/C composites increases by 32% compared with the baseline. The increase of interlaminar strength could be ascribed to a synergistic effect of SiCNWs and coaxial pyrocarbon interlayer. SIC nanowires with dentations construct nanoscale mechanical interlocking with the matrix and improve the load transfer efficiency. Besides, the pyrocarbon interlayer helps deflecting the cracks out of the basal shear plane under shear stress. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：583 / 589

页数：7

共 38 条

[1] Comparison of 2D and 3D carbon/carbon composites with respect to damage and fracture resistance [J].