Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-29T07:43:24.029Z Has data issue: false hasContentIssue false
  • English
  • Français

Nanoporosity in Ceramics from Polymeric Precursors

Published online by Cambridge University Press:  21 February 2011

A.W. Reid ,
B. Rand  and
R.J.P. Emsley
A.W. Reid
Affiliation:
School of Materials, University of Leeds, Leeds LS2 9JT, UK.
B. Rand
Affiliation:
School of Materials, University of Leeds, Leeds LS2 9JT, UK.
R.J.P. Emsley
Affiliation:
School of Materials, University of Leeds, Leeds LS2 9JT, UK.
Get access

Abstract

It is shown that ceramics derived from polycarbosilane polymers may develop an open nanoporous network after heat treatment to a temperatures between 1300 and 1550°C in argon. The resulting SiC-based ceramics were characterised by N2 gas adsorption analysis and X-ray diffraction. The apparent surface area, and pore volume increase with increasing heat treatment temperature, reaching values of 170 m2g-1 and 0.12 cm3-1 respectively. The pore network develops as the SiC crystals grow and as carbon is ejected from the structure. It is thought that the porosity may reside within the carbon phase, but this remains to be confirmed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 843
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 Seishi, Yajima, in Handbook of Composites vol. 1-Strong Fibres, edited by Wattand, W. Perov, B.V. (Elsevier Science Publishers B.V., 1985) p.201.Google Scholar
2 Peuckert, M., Vaahs, T. and Bruck, M., Adv. Mater. 2, 9, (1990).Google Scholar
3 Le Coustumer, P., Monthioux, M. & Oberlin, A., J. Eur. Ceram. Soc. 11, 95, (1993).Google Scholar
4 Delverdier, O., Monthioux, M., J. Euro. Ceram. Soc. 12, 27, (1993)Google Scholar
5 Laffon, C., Flank, A.M., Lagarde, P., Laridjani, M., Hagege, R., Olry, P., Cotteret, J., Dixmier, J., Miquel, J.I., Hommel, H. and P Legrand, A., J. Mater. Sci. 24, 1503, (1989).Google Scholar
6 Lipowitz, J., Rabe, J.A., Frevel, L.K., Miller, R.L., J. Mater. Sci, 25, 2118, (1990).Google Scholar
7 Ko, J.C., Rand, B., Riley, F.L., Kalyvas, V., East, G. and Mclntyre, E. in Better Ceramics Through Chemistry V. edited by Hampden-Smith, M.J., Klemperer, W.G. and Brinker, C.J. (Mater. Res. Soc. Proc. 271, Pittsburgh PA, 1992) pp.755–760.Google Scholar