Thermodynamic assessment of B2O3-MgO binary system

被引：15

作者：

Chen, Shan-hua ^{[1
]}

Su, Jiang ^{[1
]}

Wang, Yuan ^{[1
]}

Tang, Yi-qiang ^{[1
]}

He, Xi-kou ^{[2
]}

机构：

[1] Chengdu Univ Technol, Inst Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China

[2] Cent Iron & Steel Res Inst, Inst Special Steels, Beijing 100081, Peoples R China

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2015年 / 51卷

关键词：

B2O3-MgO system; CALPHAD; Thermodynamic assessment; Ionic two-sublattice model; Magnesium borate compounds; BORATE MG2B2O5 NANOWIRES; CRYSTAL-STRUCTURE; GROWTH-MECHANISM; MGO-B2O3; PHASE; REEVALUATION;

D O I：

10.1016/j.calphad.2015.07.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The B2O3-MgO system has been thermodynamically assessed by CALculation of PHAse Diagram (CALPHAD) technique using Thermo-Calc software. An ionic two-sublattice (I2SL) model, (Mg2+)p(O2-, BO33-, B4O72-, B3O4.5)Q, is proposed to describe the liquid phase in the system, whereas the Redlich-Kister expression is used to formulate its excess Gibbs energy. All the solid intermediate compounds have been treated as stoichiometric compounds and their Gibbs energy is modeled following Neumann-Kopp's rule. A set of self-consistent thermodynamic parameters for the B2O3-MgO system are then obtained and the calculated phase diagram and thermodynamic properties of the B2O3-MgO system agree well with the available phase diagram and experimental data in the literature. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：67 / 74

页数：8

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