PHASE RELATIONS IN SYSTEM CAO-TA2O5-SIO2

被引：22

作者：

REEVE, DA

BRIGHT, NFH

机构：

[1] Mineral Sciences Division, Department of Energy, Ottawa

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1969年 / 52卷 / 08期

关键词：

D O I：

10.1111/j.1151-2916.1969.tb11968.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：

The system CaO‐Ta2O3‐SiO2 was studied using a combination of hot‐stage microscopy and the quenching technique. Primary crystallization fields were defined for the various calcium silicates, and for the calcium tantalates: CaO·2Ta2O5, CaO·Ta2O5, 2CaO·Ta2O5, and 4CaO·Ta2O5. A congruently melting ternary compound 10CaO·Ta2O5·6SiO2, isostructural with the mineral niocalite, is the only ternary phase in the system. A large twoliquid region extends across the system from the CaO‐SiO2 binary to within 1 wt% of the Ta2O3‐SiO2 binary but does not cut it, in marked contrast to the analogous CaO‐Nb2O5‐SiO2 system. Other somewhat unexpected differences were noted between these systems. Copyright © 1969, Wiley Blackwell. All rights reserved

引用

页码：405 / &

共 16 条

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[2]

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[3]

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[4]

CRANDALL WB, 1950, AM CERAM SOC B, V29, P87

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