SiO_2-B_2O_3-Na_2O-K_2O-Li_2O-CaO-TiO_2-ZrO_2-F-P_2O_5系低融チタン釉薬の結晶化及び琺瑯乳白度に及ぼすフリット組成の影響

概要

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The effect of Na_2O, K_2O, Li_2O, F and B_2O_3 contents on the crystallization and relative opacity of low temperature melting TiO_2-opacified porcelain enamels was investigated by means of DTA, XRD, SEM observations and a Hunter color difference meter. An increase in Na_2O, K_2O and Li_2O content in frit raised the temperature of crystallization peak of DTA, while the increase in B_2O_3 and F content lowered the temperature of the peak. The opacity of the enamel fired at 690℃ showed a maximum value with the change in the Na_2O, K_2O, Li_2O, F and B_2O_3 contents. The developed TiO_2-opacified porcelain enamel frit was capable of firing at temperatures lower than 690℃, which is 110℃ lower than commercial frits.
社団法人日本セラミックス協会の論文
1992-12-01