For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Effects of Particle Volume Fraction on Dynamic Deformation Behaviors of B4C Reinforced Aluminum Matrix Composites
p.110
Synthesis of Magnetic Fe3O4@TiO2 Nanocomposite and its Photocatalytic Property
p.117
Ballistic Impact Testing and Analysis of Triaxial Braided Composite Fan Case Material
p.121
Fabrication of Si3N4 Reinforced 316L Stainless Steel Composites by Powder Injection Moulding
p.133
Density, Microstructure and Mechanical Property of Large-Scale C/C Composites Prepared by Thermal Gradient CVI
p.139
The Tribological Properties of Several PTFE Based Self-Lubricating Composites in Vacuum
p.144
Preparation of Polyaniline/SiO2 Composites by Modified Silica Using Succinic Acid
p.149
The Effects of Oil Palm Fruit Bunch (OPFB) Fiber and Coupling Agent Loadings on the Performance of Hybrid Composites
p.154
The Preparation and Properties of MgO-CaO-ZrO2 System Composite Materials
p.161

Density, Microstructure and Mechanical Property of Large-Scale C/C Composites Prepared by Thermal Gradient CVI

Article Preview

Abstract:

2D-C/C composites with the dimension of Φ80mm×400mm were prepared rapidly by thermal gradient CVI within 104 hours. Their density reached 1.74g/m3 and the density difference was less than 0.04g/cm3. The pyrocarbon microstructure changed from RL to RL+SL, and then to SL along radial direction. These changes were attributed mainly to the difference of gas concentration and temperature gradient at every micro-zone during chemical vapor infiltration. After heat-treatment at high temperature, the space among layers of pyrocarbon enlarged and residual thermal stress was freed, which could lead to cracks formed in matrix. The flexural property of composites decreased with increasing heat-treatment temperature and the fracture mode changed from the brittleness to pseudo-plastic. Carbon particulars between pyrocarbon laminas can increase the flexural strength by particular reinforcement.

You might also be interested in these eBooks
Advanced Engineering Materials II View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

139-143

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.139

Citation:

Cite this paper

Online since:

June 2012

Authors:

Wei Feng Cao, He Jun Li, Ling Jun Guo, Ke-zhi Li, Hai Liang Deng

Keywords:

Density, Microstructure, Property Analysis, Thermal Gradient CVI

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Hejun Li. New carbon materials (in Chinese), 2001, 16 (2): 79-80.

Google Scholar

[2] Buckly J D, Edie DD. Carbon-carbon materials and composites. New Jersy: Noyes Publication, 1993:1-12.

Google Scholar

[3] Golecki I. Mater Sci Eng., 20: 37-124.

Google Scholar

[4] Sundar Vaidyaraman, W. Jack Lackey, Pradeep K, et al. Carbon, 1995, 33(9):1211-1215.

Google Scholar

[5] Hyeok Je Jeong, Hee Dong Park, Jae Do Lee, et al. Carbon, 1996, 34(3): 417-421.

Google Scholar

[6] Hailiang Deng, Kezhi Li, Hejun Li, et al. Carbon, 2011, 49(7): 2561-2570.

Google Scholar

[7] Kezhi Li, Jianguo Zhao, Hejun Li, et al. Chinese patent 1583673A. 2005.

Google Scholar

[8] Jianguo Zhao, Kezhi Li, Hejun Li, et al. Carbon, 44:786-791.

Google Scholar

[9] Zijun Hu, Weigang Zhang, K.J. Hiittinger. Carbon, 2003, 41:749-758.

Google Scholar

[10] Moez Guellali, R. Oberacker, M.J. Hoffmann. Composites Science and Technology, 2008, 68: 1115-1121.

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.