16. Frictional Performance and Local Properties of C/C Composites

  1. Manuel E. Brito,
  2. Peter Filip,
  3. Charles Lewinsohn,
  4. Ali Sayir,
  5. Mark Opeka and
  6. William M. Mullins
  1. Soydan Ozcan,
  2. Milan Krkoska and
  3. Peter Filip

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291283.ch16

Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8

Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8

How to Cite

Ozcan, S., Krkoska, M. and Filip, P. (2005) Frictional Performance and Local Properties of C/C Composites, in Developments in Advanced Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 8 (eds M. E. Brito, P. Filip, C. Lewinsohn, A. Sayir, M. Opeka and W. M. Mullins), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291283.ch16

Author Information

  1. Center for Advanced Friction Studies Southern Illinois University at Carbondale Carbondale, IL, 62901–4343, USA

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982619

Online ISBN: 9780470291283

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Keywords:

  • composites;
  • microstructure;
  • pyrolitic;
  • microscopy;
  • dynamometer

Summary

The microstructure and mechanical properties of two-dimensional (2D) C/C, C/C-SiC composites with randomly chopped carbon fibers, and three dimensional (3D) non-woven C/C composites subjected to different friction experiments were investigated. The microstructure was characterized using polarized light microscopy (PLM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Different texture degrees of pyrolitic carbon matrices were determined utilizing the polarized light measurement technique and measuring the orientation (opening) angle (OA) of the carbon (002) electron diffraction arcs. The local properties (hardness, elastic modulus, and stiffness) of individual structural components of C/C composites were characterized using nanoindentation. Nanoindentation results showed that increasing the degree of texture of pyrocarbon leads to a decrease in elastic modulus and hardness. The level and stability of the coefficient of friction as detected in subscale aircraft dynamometer simulations is influenced by both the characteristics of the bulk of C/C composite. It is possible to optimize the wear rate as well as the frictional performance of C/C composites by controlling the microstructure and mechanical properties of individual components of C/C composites.