J. Korean Ceram. Soc. > Volume 36(10); 1999 > Article
 Journal of the Korean Ceramic Society 1999;36(10): 1022.
 실험계획법에 의한 $Na_2O-Al_2O_3-SiO_2$계 유리의 조성과 물성관계 강은태 경상대학교 재료공학부 Relation between Composition and Properties of $Na_2O-Al_2O_3-SiO_2$Glasses Determined from Experimental Design ABSTRACT A relation between composition and properties of Na2O-Al2O3-SiO2 glasses was investigated with application of the extreme vertical design. Properties investigated in this study include glass transition temperature density refractive index thermal expansion electrical conductivity bending strength and hardness, Most of the quadratic models fitted on property data were statistically significant. The properties estimated from the fitted equation agreed well with the measured properties. The estimated properties were compared with those reported by other investigators. Additional composition except for those of extreme vertices were needed to yield a slightly better result for the simple system such as a temary system. In addition an optimal composition on each property could be calculated by using optimization technique on result obtained from the fitted quadratic models. Key words: Extreme vertical design, $Na_2O-Al_2O_3-SiO_2$ glass, Optimization technique, Property data
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