ASSESSMENT OF THE CAO-AL2O3 SYSTEM
ASSESSMENT OF THE CAO-AL2O3 SYSTEM
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DOI：
10.1111/j.1151-2916.1990.tb05083.x
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发表时间：
1990-01-01
影响因子：
3.9
通讯作者：
HALLSTEDT, B
中科院分区：
文献类型：
--
作者：
HALLSTEDT, B
利用计算机化相图计算技术对准二元体系CaO - al2o3进行了热力学评价。实际的优化是用一个叫做PARROT的热力学模型参数优化的计算机程序进行的。液相由一个简单的两亚晶格亚规则溶液模型来描述，其中Ca2+和Al3+为阳离子，O2‐为阴离子。所有固相都作为化学计量化合物处理。提出了一组描述系统的一致参数，并与实验数据进行了大量比较。在系统的高铝部分缺乏准确的数据，并且强调了更好地了解CaO·6al2o3相的重要性。
A thermodynamic assessment of the quasi‐binary system CaO‐Al2O3has been made using a computerized CALPHAD (calculation of phase diagrams) technique. The actual optimization was carried out with a computer program for the optimization of parameters in thermodynamic models called PARROT. The liquid phase is described by a simple two‐sublattice subregular solution model with Ca2+and Al3+as cationic species and O2‐as anionic species. All solid phases are treated as stoichiometric compounds. A consistent set of parameters describing the system is presented, and numerous comparisons with experimental data are made. There is a lack of accurate data in the high‐alumina part of the system, and the importance of a better knowledge of the CaO·6Al2O3phase is stressed.