Chapter 57. Effects of Coal Slag Corrosion on the Mechanical Properties of Sintered α-Silicon Carbide

  1. J. P. Singh
  1. Sophie E. Hannel1,
  2. Kristin Breder2 and
  3. Debra L. Joslin2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294437.ch57

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3

How to Cite

Hannel, S. E., Breder, K. and Joslin, D. L. (1997) Effects of Coal Slag Corrosion on the Mechanical Properties of Sintered α-Silicon Carbide, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 18, Issue 3 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294437.ch57

Author Information

  1. 1

    Ecole Centrale, Lyon, France

  2. 2

    High Temperature Materials Laboratory, Oak Ridge National Laboratory, Oak Ridge, TN 37831–6069.

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375495

Online ISBN: 9780470294437

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Keywords:

  • coal slags;
  • laboratory furnace;
  • corrosion pits;
  • medium viscosity;
  • iron content

Summary

Tubes of sintered SiC were exposed for 500 h in a laboratory furnace to three different coal slags at three temperatures. No corrosive attack or strength reduction was observed after exposure at 1090°C. At 1260°C the least viscous slag caused formation of corrosion pits and loss of strength. At 1430°C formation of iron silicides at the interface between the slag and the base material caused severe loss of strength for slags with the highest and the lowest viscosity, while the specimens exposed to the slag with medium viscosity and medium iron content survived quite well. The results show that mechanical strength can be retained for certain coal slag - temperature combinations.