Chapter 29. Black Specking in Porcelain Enamel Powder Applications
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1988 The American Ceramic Society, Inc. and The Porcelain Enamel Institute
Proceedings of the 49th Porcelain Enamel Institute Technical Forum: Ceramic Engineering and Science Proceedings, Volume 9, Issue 5/6
How to Cite
Jett, V. C. (1988) Black Specking in Porcelain Enamel Powder Applications, in Proceedings of the 49th Porcelain Enamel Institute Technical Forum: Ceramic Engineering and Science Proceedings, Volume 9, Issue 5/6 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310489.ch29
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374795
Online ISBN: 9780470310489
The most troublesome defect of the various defects that plague porcelain enamellers is the black speck. Unfortunately, this defect occurs more often in the two-coat one-fire, electrostatic powder process than it does in the more laborious, less efficient two-coat two-fire wet system. The causes of black specks are many and presented here, with their photomicrographs, are ten of them.