Thermodynamic modeling of the Zr-O system
Thermodynamic modeling of the Zr-O system
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DOI：
10.1016/s0364-5916(02)00027-5
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发表时间：
2002-03-01
影响因子：
2.4
通讯作者：
Eagar, TW
中科院分区：
文献类型：
--
作者：
Arroyave, R;Kaufman, L;Eagar, TW
在这项研究中，完整的锆-氧系统在1 at进行了严格的评估。从300度到液态温度。利用热化学测量和相图数据建立了七个相的吉布斯自由能模型。此外，基于hcp的有序间隙溶液被包括在内，并被认为是简单的线化合物。利用heat - calc中的PARROT模块，可以对描述HCP、BCC的吉布斯自由能模型参数进行优化。液体，ZrO2-x， ZrO2-x和ZrO2-x相。气相被认为是理想的。虽然包括化学计量氧化锆相的相图已经被评估过，但据我们所知，这是第一次发表对该体系的完整评估。(C) 2002年Elsevier Science Ltd.出版
In this study, the complete zirconium-oxygen system has been critically assessed at 1 at. from 300degreesC to liquidus temperatures. Thermochemical measurements and phase diagram data were used to model the Gibbs free energies of seven phases. Additionally, the ordered interstitial HCP-based solutions were included and considered as simple line compounds. By using the PARROT module in Thermo-Calc, it was possible to optimize the parameters of the models used to describe the Gibbs free energies of the HCP, BCC., Liquid, gamma ZrO2-x,beta ZrO2-x and alpha ZrO2-x phases. The Gas phase was considered to behave ideally. Although phase diagrams including the stoichiometric zirconia phases have been assessed, this is the first time, to the best of our knowledge that a complete assessment of this system is published. (C) 2002 Published by Elsevier Science Ltd.