PHASE-RELATIONS IN THE SYSTEM AL2O3-CE2SI2O7 IN THE TEMPERATURE-RANGE 900-DEGREES-C TO 1925-DEGREES-C IN INERT ATMOSPHERE

被引：15
作者：
TAS, AC
AKINC, M
机构：
[1] Department of Materials Science and Engineering, Iowa State University, Ames, Iowa
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1993年 / 76卷 / 06期
关键词：
D O I：
10.1111/j.1151-2916.1993.tb03945.x
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：
Equilibrium relationships in the system Al2O3-Ce2Si2O7 in inert atmosphere have been investigated in the temperature range 900-degrees to 1925-degrees-C. A simple eutectic reaction was found at 1375-degrees-C and 51 mol% Ce2Si2O7. A high-low polymorphic transformation in Ce2Si2O7 was observed at 1274-degrees-C. New XRD patterns are suggested for both polymorphs of cerium pyrosilicate. The melting point of Ce2Si2O7 was found to be 1788-degrees-C. A value for DELTAH(m,Ce2Si2O7)degrees of 36.81 kJ/mol was calculated from the initial slope of the experimentally determined liquidus in equilibrium with the pyrosilicate phase.
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页码：1595 / 1601
页数：7
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