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 J. Korean Ceram. Soc. > Volume 43(10); 2006 > Article
 Journal of the Korean Ceramic Society 2006;43(10): 619. doi: https://doi.org/10.4191/kcers.2006.43.10.619
 유적 천목의 유적 발생 구조 정종혁, 이병하 명지대학교 신소재공학과 Oil Spot Generative Formation of Oil Spot Denmoku Jong-Heuk Jung, Byung-Ha Lee Department of Advanced Materials Engineering, Myongji University ABSTRACT The study was intended to investigate production tools and conditions of oil spot following calculating optimal composition of oil spot tenmoku glaze which can be produced at 1250$sim$l260$^{circ}C$. Since oil spot is influenced by the viscosity of glaze, viscosity of various glazes fit for oil spot production was determined by an SciGlass 6.0-based calculating method. Applied amount and calcinating conditions of the resulting substance of oil spot, $Fe_2O_3$, were analyzed. As a result, the viscosity of the glaze durable at 1260$^{circ}C$ was found to range from 4.2 to 4.4, natural cooling was used after oxidizing calcinations at 1260$^{circ}C$ for an hour, and the best oil spot tenmoku was produced by the natural cooling process after 1 h calcinations at 1150$^{circ}C$ in the middle of natural cooling. Also, the study showed that thickness of glaze was found to have an effect on the production of oil spot and resulting oil spot was filled mostly with $Fe_2O_3$. Key words: Oil spot, Tenmoku, $Fe_2O_3$
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