Chapter 47. Thermochromaticity in Glazed Wall Tile
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramic Society
Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 13, Issue 1/2
How to Cite
Weintraub, R. L. (1994) Thermochromaticity in Glazed Wall Tile, in Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 13, Issue 1/2 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313916.ch47
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375129
Online ISBN: 9780470313916
Thermochromaticity is the phenomenon of color value readings, such as L, a, b or x, y, Y, changing as the temperature of the object being measured varies. Traditional methods of tile production yield tile that is usually allowed to cool to room temperature before a color measurement is taken. However, with the spread of fast-fire roller hearth technology and just-in-time processing, tile is now often read at elevated temperatures. If thermochromaticity is not taken into account, shade mismatches may occur. This paper is meant to introduce those in the whitewares industry to the concepts pertaining to thermochromaticity. Experimental test data, showing the relationships of four colors for temperature vs shade numbers, using x, y, Y measurements, will be used as illustrations.