Chapter 7. Factors Influencing Hydrogen-Related Defects in Porcelain Enamel Coatings

  1. John B. Wachtman Jr
  1. Andrew W. Gordon

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314579.ch7

Proceedings of the 56th Porcelain Enamel Institute Technical Forum: Ceramic Engineering and Science Proceedings, Volume 15, Issue 6

Proceedings of the 56th Porcelain Enamel Institute Technical Forum: Ceramic Engineering and Science Proceedings, Volume 15, Issue 6

How to Cite

Gordon, A. W. (1994) Factors Influencing Hydrogen-Related Defects in Porcelain Enamel Coatings, in Proceedings of the 56th Porcelain Enamel Institute Technical Forum: Ceramic Engineering and Science Proceedings, Volume 15, Issue 6 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314579.ch7

Author Information

  1. U.S. Steel Research Monroeville, PA 15146

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375228

Online ISBN: 9780470314579

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Keywords:

  • illustrates;
  • outgassing;
  • fishscale;
  • hydrogen;
  • accumulation

Summary

Factors that contribute to the occurrence offishscale on porcelain enameled ware are identified. These factors can be broken down into three main categories, which form a process window: steel substrate, enamel coating, and shop process. By firing, in adverse conditions, samples of a steel that possessed an increased susceptibility to fishscaling, it was determined that increasing furnace moisture levels, lowering base coating weights, and increasing firing temperature (over-firing) all lead to an increase in the occurrence of fishscale.