Phase field simulation study of the dissolution behavior of Al2O3 into CaO-Al2O3-SiO2 slags

被引：15

作者：

Liu, Jingjing ^{[1
]}

Zou, Ji ^{[2
]}

Guo, Muxing ^{[1
]}

Moelans, Nele ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44,Bus 2450, B-3001 Heverlee, Belgium

[2] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2016年 / 119卷

关键词：

Phase-field model; Diffusion path; Dissolution rate; Alumina; CaO-Al2O3-SiO2; slag; CALCIUM-ALUMINUM-SILICATE; IN-SITU OBSERVATIONS; CERAMIC SYSTEMS; MULTICOMPONENT DIFFUSION; CAO-SIO2-AL2O3; SLAGS; SINTERED ALUMINA; MOLD FLUXES; MELTS; KINETICS; INCLUSIONS;

D O I：

10.1016/j.commatsci.2016.03.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A quantitative phase-field model has been implemented to study the dissolution behavior of alumina (Al2O3) into CaO-Al2O3-SiO2 slags. The simulations allowed evaluating the influence of temperature and composition on the diffusion paths and dissolution rates of Al2O3 into CaO-Al2O3-SiO2 slags. The results obtained in the simulations are consistent with experimental observations and the predictions from an analytical dissolution model. The phase field simulations show that the dissolution rate of Al2O3 increases with temperature. Increasing CaO at a fixed Al2O3 content or decreasing Al2O3 content at a fixed CaO/SiO2 ratio also results in a higher dissolution rate of Al2O3. The results are further interpreted based on thermodynamic and kinetic considerations. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：9 / 18

页数：10

共 42 条

[1] DIFFUSION-LIMITED PHASE TRANSFORMATIONS - A COMPARISON AND CRITICAL EVALUATION OF MATHEMATICAL APPROXIMATIONS [J].

AARON, HB ;

FAINSTEIN, D ;

KOTLER, GR .

JOURNAL OF APPLIED PHYSICS, 1970, 41 (11) :4404-+

[2] CHANNELING INSTABILITY OF UPWELLING MELT IN THE MANTLE [J].

AHARONOV, E ;

WHITEHEAD, JA ;

KELEMEN, PB ;

SPIEGELMAN, M .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1995, 100 (B10) :20433-20450

[3] Models for numerical treatment of multicomponent diffusion in simple phases [J].

Andersson, Jan-Olof ;

Agren, John .

Journal of Applied Physics, 1992, 72 (04)

[4] FactSage thermochemical software and databases - recent developments [J].

Bale, C. W. ;

Belisle, E. ;

Chartrand, P. ;

Decterov, S. A. ;

Eriksson, G. ;

Hack, K. ;

Jung, I. -H. ;

Kang, Y. -B. ;

Melancon, J. ;

Pelton, A. D. ;

Robelin, C. ;

Petersen, S. .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2009, 33 (02) :295-311

[5]

BATES JL, 1987, J AM CERAM SOC, V70, pC55, DOI 10.1111/j.1151-2916.1987.tb04965.x

[6] DIFFUSION-CONTROLLED DISSOLUTION OF PLANAR, CYLINDRICAL, AND SPHERICAL PRECIPITATES [J].

BROWN, LC .

JOURNAL OF APPLIED PHYSICS, 1976, 47 (02) :449-458

[7] Dissolution kinetics of alumina into mold fluxes for continuous steel casting [J].

Bui, AH ;

Ha, HM ;

Chung, IS ;

Lee, HG .

ISIJ INTERNATIONAL, 2005, 45 (12) :1856-1863

[8] MULTICOMPONENT DIFFUSION IN TERNARY SILICATE MELTS IN THE SYSTEM K2O-AL2O3-SIO2 .2. MECHANISMS, SYSTEMATICS, AND GEOLOGICAL APPLICATIONS [J].

CHAKRABORTY, S ;

DINGWELL, DB ;

RUBIE, DC .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1995, 59 (02) :265-277

[9] Wetting of solid Al2O3 with molten CaO-Al2O3-SiO2 [J].

Choi, JY ;

Lee, HG .

ISIJ INTERNATIONAL, 2003, 43 (09) :1348-1355

[10] Dissolution rate of Al2O3 into molten CaO-SiO2-Al2O3 slags [J].

Choi, JY ;

Lee, HG ;

Kim, JS .

ISIJ INTERNATIONAL, 2002, 42 (08) :852-860

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