Synthesis of Bi<sub>2</sub>O<sub>3</sub>&ndash;ZrO<sub>2</sub> solid solutions for environment-friendly orange pigments

  • KUSUMOTO Keiji
    National Institute of Advanced Industrial Science and Technology (AIST)

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タイトル別名
  • Synthesis of Bi<sub>2</sub>O<sub>3</sub>–ZrO<sub>2</sub> solid solutions for environment-friendly orange pigments

抄録

Bi2−xZr3x/4O3 solid solutions were synthesized by conventional ceramic method and their color properties were investigated as environment-friendly inorganic orange pigments. Single phased Bi2−xZr3x/4O3 solid solutions with tetragonal crystal structure are formed in the range of 0.3 ≤ x ≤ 0.5 compositions. Brilliant orange color powders were obtained for x = 0.5 composition heated at 800°C, which had color parameters (L*, a*, b*) of L* = 68, a* = 34, and b* = 69. The color of x = 0.5 samples is comparable to that of orange color specified in Japanese Industrial Standards (JIS) for a traffic paint. Since Bi2−xZr3x/4O3 solid solutions are composed of nontoxic elements, it should be an alternative candidates to conventional PbCrO4-based pigments for traffic paint.

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