Effects of Transition Temperature and Atomic Ratio on Glass Formation Tendency in the PbO-B<TEX>$_2$</TEX>O<TEX>$_3$</TEX>-TiO<TEX>$_2$</TEX>-BaO System

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J. Korean Ceram. Soc. > Volume 35(12); 1998 > Article

Journal of the Korean Ceramic Society 1998;35(12): 1274.

PbO-B$_2$O$_3$-TiO$_2$-BaO계의 유리화에 대한 전이온도 및 성분 원소비의 영향

이선우, 심광보¹, 오근호¹

한양대학교 신소재공정공학원
¹한양대학교 세라믹공정연구센터

Effects of Transition Temperature and Atomic Ratio on Glass Formation Tendency in the PbO-B$_2$O$_3$-TiO$_2$-BaO System

ABSTRACT

The glass forming ability of the PbO-B2O3-TiO3-BaO system was investigated in relation to transitieon tem-peratures and the atomic ratio between constituents. Glass forming tendency was improved as the tem-peratures and the atomic ratio between constituents. Glass forming tendency was improved as the tem-perature differences between liquidus temperature and crystallization(or glass transition) temperature de-creased and the temperature difference between crystallization and glass transition temperature increases. The atomic ratio could be used as a criterion to deign glass systems. The interposition of B and Ba atoms between Pb and Ti atoms was one of important factors in glass formation.

Key words: Atomic ration, Glass formation, Transition temperature, Natural cooling, PbO-B$_2$O$_3$-TiO$_2$-BaO