Chapter 43. Viability and Degradation of Molybdenum Disilicide Materials in Molten Glass Environments

  1. Don Bray
  1. Youngsoo Park,
  2. Darryl P. Butt,
  3. Richard Castro,
  4. Kendall Hollis and
  5. John Petrovic

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch43

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Park, Y., Butt, D. P., Castro, R., Hollis, K. and Petrovic, J. (1988) Viability and Degradation of Molybdenum Disilicide Materials in Molten Glass Environments, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch43

Author Information

  1. Los Alamos National Laboratory, Materials Science and Technology Division Los Alamos, NM 87545

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • mechanisms;
  • refractory;
  • environments;
  • configuration;
  • materials

Summary

The durability and degradation mechanisms of MoSi2 materials, compared to other refractory materials, were investigated for industrial glass applications. The corrosion behavior was assessed by measuring dimensional changes above, at, and below the molten glass line. Tests were performed at temperatures ranging from 1000°C to 1550°C for 0.5 to 1510 hours under dynamic and static conditions. Mechanisms were evaluated using SEM, EDS, EMPA, XRD, and TEM. Test results show that MoSi2 is superior to other test refractories except ACZS and ZrO2. MoSi2 is comparable to ACZS and ZrO2 above and below the glass line due to the formation of protective SiO2 and Mo-rich layers, respectively. However corrosion of MoSi2 at the glass line is more rapid due to dissolution of SiO2 and simultaneous sublimation of Mo oxides.