Coupled experimental phase diagram study and thermodynamic optimization of the Na2O-B2O3-Fe2O3 system in air

被引：7

作者：

Kim, Min-Kyung ^{[1
]}

Jung, In -Ho ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea

[2] Seoul Natl Univ, Res Inst Adv Mat RIAM, Seoul 08826, South Korea

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2022年 / 76卷

关键词：

B2O3-Fe2O3; system; Na2O-B2O3-Fe2O3; Phase diagram; CALPHAD; Modified quasichemical model; QUASI-CHEMICAL MODEL; IRON; CRYSTAL; MICROANALYSIS; ELECTROLYSIS; LITHIUM; SODIUM; OXYGEN; FEBO3; FE2O3;

D O I：

10.1016/j.calphad.2021.102364

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Coupled key phase diagram experiment and thermodynamic optimization of the Na2O-B2O3-Fe2O3 system were carried out. Liquidus in the Na2O-B2O3-Fe2O3 system in air was experimentally determined at 1173, 1273, 1373, and 1473 K using a classical quenching method followed by Electron Probe Micro-Analyzer (EPMA) and X-Ray Diffraction (XRD) phase analysis. Based on the new phase diagram data and available literature data, the thermodynamic optimizations of binary B2O3-Fe2O3 system and ternary Na2O-B2O3-Fe2O3 (Na2O < 50 mol%) system in air were carried out. All the reliable experimental phase diagram data were reproduced within an experimental error limit. Thermodynamic properties and phase diagrams of the ternary Na2O-B2O3-Fe2O3 (Na2O < 50 mol %) in air were predicted from the thermodynamic models with optimized model parameters.

引用

页数：13

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