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J. Korean Ceram. Soc. > Volume 44(5); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(5): 160.
doi: https://doi.org/10.4191/kcers.2007.44.5.160
고온용 검정색 스피넬 안료의 개발
이광호, 명민수, 이병하
명지대학교 신소재공학과
Development of Black Color Spinel Pigment for High Temperature
Kwang-Ho Lee, Min-Soo Myung, Byung-Ha Lee
Department of Ceramic Engineering, Myongji University
This research studied the most suitable synthesis condition of mineral pigments of black spinel, which have a stable chromogenic characteristic also ata high temperature of $1400^{circ}C$ (it is not currently producedin the country) to meet not only functionality of ceramics but also an individual's aesthetic. It was synthesized by the plastic synthetic method on the basis of basic formation of $Fe_2O_3,;Cr_2O_3$, Quartz, Kaolin, CoO, $MnO_2$, and plasticity was made at $1500^{circ}C,;1550^{circ}C,;1600^{circ}C,;1650^{circ}C$. We researched the most suitable condition of plasticity and composition which make crystallization of spinel system and chromogenic characteristic close to black in every composition. And for the experiment of application to Zirconia, after adding synthesized pigments to Zirconia and plasticizing them, we analyzed their color and property of matters. The most suitable synthesis conditions of mineral pigments of black spinel system require composition of $Fe_2O_3-32.01%,;Cr_2O_3-30.47%$, Quartz-9.66%, Kaolin-18.53%, CoO-3.71%, $MnO_2-5.62%$ and condition of plasticity kept for 1 h at $1600^{circ}C$. When we added pigments synthesized in this way to Zirconia with 5 wt% and plasticized them at $1410^{circ}C$, the result was that the degree of $strength-32.6kgf/mm^2$, absorptance-0.108%, $luminosity-L^*:37.54,;color-a^*:1.31,;b^*:2.61$ and their use suited for artificial jewelry or decoration Zirconia goods.
Key words: Black color, Pigment, Spinel, Zirconia
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