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J. Korean Ceram. Soc. > Volume 24(2); 1987 > Article
Journal of the Korean Ceramic Society 1987;24(2): 117.
AlF3-(Mg+Sr+Ba)F2-P2O5계 유리에 관한 연구 I. 유리화 범위와 특성
김정은, 이종근
한양대학교 공과대학 무기재료공학과
Studies on AlF3-(Mg+Sr+Ba)F2-P2O5 Glasses I. Glass Forming Ranges of Fluorophosphate System and Its Various Properties
Glass forming ranges in the AlF3-(Mg+Sr+Ba)F2-P2O5 system are studied and ultraviolet transmission, infrared transmission, coefficient of refractive index, thermal expansion coefficient, density and chemical durability of the glasses are determined. Glass forming range is restricted MgF2 0-10wt%, SrF2 10-50wt%, BaF2 10-40wt% in this system. While BaF2 is substituted by SrF2, density and refractive index are decreased, micro hardness and thermal expansion coefficient are increased according to the increasing of SrF2 at fixed MgF2 contents. These samples represent high transmittance(93%) from 400nm to 3800nm and chemical durability of these samples show less than 0.3mg/$textrm{cm}^2$$.$hy by weightloss.
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