The effect of carbon nanotubes on the microstructure and morphology of pyrolytic carbon matrices of C-C composites obtained by CVI

被引：55

作者：

Gong, QM ^{[1
]}

Zhi, L ^{[1
]}

Bai, XD ^{[1
]}

Li, D ^{[1
]}

Liang, J ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2005年 / 65卷 / 7-8期

关键词：

microstructure; scanning electron microscopy (SEM); chemical vapour infiltration (CVI); carbon nanotubes;

D O I：

10.1016/j.compscitech.2004.11.005

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Traditional isothermal CVI technology was used to explore the effect of carbon nanotubes (CNTs) on the microstructure of pyrocarbon. Polarized-light optical microscopy, SEM and Raman spectroscopy were used to analyze the textures of pyrocarbons in pure carbon/carbon composites (as contrast), aligned carbon nanotube/carbon (ACNT/C) composites and carbon/carbon composites doped with multi-walled CNTs. Tests show that even though deposition conditions in this study bring about typical smooth laminar typed pyrocarbon in pure C/C composites, pyrocarbons in the other two composites exhibit microstructure of rough laminar type, which indicates that CNTs conduced to formation of high-textured pyrocarbon. Such effects of CNTs might be ascribed to the following two sides: on the one hand, CNTs act as in-situ nuclei for the various sized polyaromatic molecules in gas phase, thus led to growth mechanism in pyrocarbon formation, and on the other hand, their π orbitals would attract those molecules with similar hybridized atomic orbitals by Van Der Waals forces to form orderly stacked layers, which has been proved by HRTEM observations. © 2004 Elsevier Ltd. All rights reserved.

引用

页码：1112 / 1119

页数：8

共 29 条

[1]

[Anonymous], 1998, CARBON REINFORCEMENT

[2]

[Anonymous], 1965, CARBON, DOI [10.1016/0008-6223(65)90023-0, DOI 10.1016/0008-6223(65)90023-0]

[3]

[Anonymous], 1973, CHEM PHYS CARBON

[4] The effect of fibre-matrix interactions on structure and property changes during the fabrication of unidirectional carbon/carbon composites [J].

Appleyard, SP ;

Rand, B .

CARBON, 2002, 40 (06) :817-834

[5] Chemistry and kinetics of chemical vapor deposition of pyrocarbon - III - Pyrocarbon deposition from propylene and benzene in the low temperature regime [J].

Becker, A ;

Huttinger, KJ .

CARBON, 1998, 36 (03) :201-211

[6] Chemistry and kinetics of chemical vapor deposition of pyrocarbon - II - Pyrocarbon deposition from ethylene, acetylene and 1,3-butadiene in the low temperature regime [J].

Becker, A ;

Huttinger, KJ .

CARBON, 1998, 36 (03) :177-199

[7] Texture and nanostructure of pyrocarbon layers deposited on planar substrates in a hot-wall reactor [J].

De Pauw, V ;

Reznik, B ;

Kalhöfer, S ;

Gerthsen, D ;

Hu, ZJ ;

Hüttinger, KJ .

CARBON, 2003, 41 (01) :71-77

[8] Consideration of reaction mechanisms leading to pyrolytic carbon of different textures [J].

Dong, GL ;

Hüttinger, KJ .

CARBON, 2002, 40 (14) :2515-2528

[9] THE FUTURE OF CARBON-CARBON COMPOSITES [J].

FITZER, E .

CARBON, 1987, 25 (02) :163-190

[10] Response: possible pathways to carbon from hydrocarbons at high temperatures [J].

Glasier, GF ;

Filfil, R ;

Pacey, PD .

CARBON, 2002, 40 (08) :1371-1373

← 1 2 3 →