Viscosity and Liquidus Temperature of Ternary Glasses Close to the Eutectic Composition in the CaO-Al2O3-SiO2 System

被引：9
作者：
Veit, Ulrike [1 ]
Ruessel, Christian [1 ]
Houet, Yves [2 ]
Laurent, Dimitri [2 ]
机构：
[1] Univ Jena, Otto Schott Inst, Fraunhoferstr 6, D-07743 Jena, Germany
[2] 3B Fibreglass Co, S&T Ctr, Rue Charneux 59, B-4651 Battice, Belgium
来源：
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE | 2016年 / 7卷 / 03期
关键词：
liquidus; phase transition; calcium aluminum silicate; glass forming; systems; viscosity; glass forming melts; PHYSICAL-PROPERTIES; FORMING MELTS; SILICATE; DENSITY; MODEL;
D O I：
10.1111/ijag.12191
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Thermal properties of ternary glass-forming systems within the known CaO-Al2O3-SiO2 system were evaluated. Different glass compositions near the lowest eutectic composition (around a liquidus temperature of 1170 degrees C) within the CaO-Al2O3-SiO2 system were melted from pure raw materials. The investigated target range of compositions in wt% was between 60.5 and 63.5 SiO2, 13.1 and 16.1 Al2O3, and 21.4 and 25.4 CaO. The chemical compositions, the glass transition temperatures, and the temperatures attributed to viscosities of 10(3) dPa*s were determined experimentally. It was of special interest to obtain information of all these properties of the glasses and the effect of small composition changes hereon. The liquidus temperature changed less than expected for a composition close to the eutectic composition. Temperatures at a viscosity of 10(3) dPa*s varied between 1263 and 1363 degrees C +/- 6 degrees C. A liquidus temperature of 1157 degrees C +/- 7 degrees C (with a confidence interval of 95%) of the eutectic composition was found. The results reported here may be useful for understanding and improvement of the modeling within the CaO-Al2O3-SiO2 glass system.
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收藏
页码：295 / 309
页数：15
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