Chapter 59. The Stability of Porous Silicon Carbide Under Water Vapor Below and at 1000°C

  1. Rajan Tandon,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. Manabu Fukushima,
  2. You Zhou,
  3. Yu-Ichi Yoshizawa,
  4. Hiroyuki Miyazaki and
  5. Kiyoshi Hirao

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291313.ch59

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

How to Cite

Fukushima, M., Zhou, Y., Yoshizawa, Y.-I., Miyazaki, H. and Hirao, K. (2006) The Stability of Porous Silicon Carbide Under Water Vapor Below and at 1000°C, in Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2 (eds R. Tandon, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291313.ch59

Author Information

  1. National Institute of Advanced Industrial Science and Technology (AlST), 2266–98 Shimo–Shidami, Moriyama–ku, Nagoya, Aichi, 463–8560, Japan

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080528

Online ISBN: 9780470291313

SEARCH

Keywords:

  • carbide;
  • porous silicon carbide;
  • electron inicroscopy;
  • field emission;
  • DPF

Summary

Porous silicon carbide with or without alumina additive was prepared by sintering at 1500 °C, and their corrosion behavior under water vapor below 1000°C was investigated by weight change, microstructural analyses and spectroscopic characterizations. The porous SiC without additive showed the lower weight changes after vapor corrosion test, while the larger weight changes in the porous SiC with additive were found. In the morphological observations after corrosion test, though crack and wrinkle could not be observed for both specimens, the microstructural changes such as the increase of neck area among particles were significantly found in the porous SiC with additive. This is considered to be due to the decreasing of viscosity of silica layer on the SiC particle surface and the gathering of silica layer toward neck part, because water vapor can solve silica and easily form Si–OH group to decrease the viscosity of silica under high temperature vapor. X–ray photoelectron spectroscopy (XPS) spectra revealed the formation of Si–OH after vapor corrosion test.