PHASE-EQUILIBRIA OF THE CALCIUM OXIDE-COPPER OXIDE SYSTEM IN OXYGEN AT 1 ATM

被引：26

作者：

TSANG, CF ^{[1
]}

MEEN, JK ^{[1
]}

ELTHON, D ^{[1
]}

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1995年 / 78卷 / 07期

关键词：

D O I：

10.1111/j.1151-2916.1995.tb08901.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：

Phase equilibria in the CaO-CuO system have been determined at 1 atm pressure in oxygen over the temperature range 800 degrees to 1300 degrees C, CaO is the stable phase at the calcium-rich end of the system, Two intermediate crystalline phases, namely Ca2CuO3 and Ca3Cu7O10, form, Ca2CuO3 is stable up to 1085 degrees +/- 3 degrees C, where it melts incongruently to CaO + liquid (peritectic liquid has similar to 82% CuO), Ca3Cu7O10 becomes stable at 977 degrees +/- 3 degrees C by reaction between Ca2CuO3 and CuO, Ca3Cu7O10 melts incongruently at 1046 degrees +/- 3 degrees C to Ca2CuO3 + liquid (peritectic liquid has similar to 83% CuO). CuO is the stable copper oxide phase up to 1061 degrees +/- 3 degrees C at the copper-rich end of the system; at higher temperatures, Cu2O is stable until the liquidus is reached at 1121 degrees C, The binary eutectic is at 1045 degrees +/- 5 degrees C, in which a liquid with 83 % CuO coexists with Ca3Cu7O10 and CuO.

引用

页码：1863 / 1868

页数：6

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