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Color variation of copper glaze with the addition of tin oxide

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2017, 27(5), pp.243-248
  • DOI : 10.6111/JKCGCT.2017.27.5.243
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : August 14, 2017
  • Accepted : September 27, 2017
  • Published : October 31, 2017

Hyunggoo No 1 Soomin Kim 1 Ungsoo Kim 1 Wooseok Cho 1

1한국세라믹기술원

Accredited

ABSTRACT

In this study copper glaze samples were prepared with varying amount of tin oxide, and the chromatic characteristics of glazes were explained on the results of spectrophotometric, crystalline phase, and microstructural analyses. The red color of copper glaze was dissipated with the addition of tin oxide and turned into achromatic color due to the decrease of CIEab values. Tin oxide homogeneously distributed in the glaze layer interfered with the red color generation coming from the growth of Cu nuclei, and formed an alloy with metal copper around bubbles. This resulted in the decrease of metal copper peak intensity with minor Cu2O peak. With the 3.79 % tin oxide addition the glaze was appeared as gray due to the black color CuO and Cassiterite SnO2 phases.

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