Novel Environment-friendly Green Pigments for Over-glazed Decoration of <i>Arita</i> Ware

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  • MASUI Toshiyuki
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • SHIRAISHI Atsunori
    Saga Ceramics Research Laboratory
  • NAKADO Hiroki
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • TAKEUCHI Naoki
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • WENDUSU
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • IMANAKA Nobuhito
    Department of Applied Chemistry, Faculty of Engineering, Osaka University

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  • 有田焼上絵用の新規な環境調和型緑色顔料
  • Novel Environment-friendly Green Pigments for Over-glazed Decoration of Arita Ware
  • Novel enrvironment-friendly green pigments for over-glaze decoration of Arita ware

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Abstract

Environmental-friendly inorganic green pigments based on (Y0.9R0.1)2BaCuO5 (R = Sm3+, Gd3+, Yb3+, and Lu3+) solid solutions were synthesized and the dopant element was optimized to give the most greenish color. Among the samples, it was found that Lu-doped sample showed brilliant green hue. In response to the results, (Y1−xLux)2BaCuO5 (0 ≤ x ≤ 0.3) pigments were further synthesized and their color properties were characterized in an attempt to find a new environmentally friendly pigment that has more sufficient green chromaticity. Among the samples, the most vivid green hue was obtained for (Y0.9Lu0.1)2BaCuO5 with a greenness value (−a*) of 48.6 in the CIE L*a*b* system, which was significantly larger than those of commercially available Cr2O3 (−a* = 18.2) and CoO∙ZnO (−a* = 25.3) pigments. The Y2BaCuO5 and (Y0.9Lu0.1)2BaCuO5 pigments were used in paints for porcelain. The green colors of the overglazed decoration panels were brilliant. Therefore, these pigments could be the potential candidates for novel green pigments of over-glazed decoration of Arita ware.

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