Change in the amorphous photonic crystal structural color glaze under the regulation of firing condition

By adjusting the addition amount of Ca 3 (PO 4 ) 2 and boron frit, the amorphous photonic crystal structural color glazes with di ff erent colors were prepared without introducing colorants with the average heating rate of 4.1 degrees C / min and the fi ring temperature of 1300 degrees C. Furthermore, the e ff ects of fi ring temperature and heating rate on the structural colors were studied. The results indicated that the contents of Ca 3 (PO 4 ) 2 and boron frit were 2 and 4 % , 2 and 10 % , 3 and 8 % (mass fraction), respectively, the amorphous photonic crystal structural color glazes with purple, blue, and light cyan colors were prepared. When the fi ring temperature decreased from 1300 to 1250 degrees C, the presence of residual quartz and the uneven distribution of phase separation structures increased the brightness of structural colors and decreased the color saturation. In addition, after decreasing the average heating rate from 4.1 to 2.8 degrees C / min, the diopside was formed in the glazes. It absorbed iron at high temperatures and transformed into green diopside. Under the coupling e ff ect of the chemical color generated by diopside and the structural color generated by phase separation structures, a cyan color with high color saturation appeared in the glaze.