Chapter 3. Effects of Oxidation-Reduction Reactions in Magnesia-Graphite Compositions
- William Smothers
Published Online: 28 MAR 2008
Copyright © 1986 The American Ceramic Society, Inc.
Applications of Refractories: Ceramic Engineering and Science Proceedings, Volume 7, Issue 1/2
How to Cite
Lin, Y.-L. and Semler, C. E. (1986) Effects of Oxidation-Reduction Reactions in Magnesia-Graphite Compositions, in Applications of Refractories: Ceramic Engineering and Science Proceedings, Volume 7, Issue 1/2 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320310.ch3
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1986
Print ISBN: 9780470374443
Online ISBN: 9780470320310
- oxidation-reduction reaction;
- thermal shock resistance;
- MgO zone
The microstructural effects associated with oxidation-reduction reaction in seawater magnesite-graphite compositions have been studied. Selected compositions of coarse, intermediate, and fine particle size grading were fired at 1600° and 1650°C with various hold times at temperature and controlled variation of the firing atmosphere. Evaluation of the fired samples included percent oxidation, weight loss, dense zone, and characterization of the MgO dense zone microstructure. The progressive sample bloating that was observed for various materials and firing conditions are illustrated. The mechanism(s) and rate of dense zone formation is discussed. The effect of particle size and atmosphere variation in controlling decarbonization is considered.