Cyclic Solid-Liquid Phase Transformations in the CaO-SiO2 System-Experiments and Modelling

被引：0

作者：

Ogris, Daniel Marian ^{[1
,2
]}

Kircher, Volkmar ^{[3
]}

Gamsjaeger, Ernst ^{[2
]}

机构：

[1] K1 MET GmbH, Franz Josef Str 18, A-8700 Leoben, Austria

[2] Univ Leoben, Franz Josef Str 18, A-8700 Leoben, Austria

[3] Univ Leoben, Resources Innovat Ctr Leoben, Peter Tunner Str 15, A-8700 Leoben, Austria

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2023年 / 54卷 / 03期

关键词：

QUASI-CHEMICAL MODEL; IN-SITU OBSERVATION; CRYSTALLIZATION BEHAVIOR; REFRACTORIES; DISSOLUTION; DICTRA; STEEL; SLAG; MELT;

D O I：

10.1007/s11663-023-02783-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cyclic growth and shrinkage of solid oxides (i.e. wollastonite) in CaO-SiO2-based slags is investigated in-situ by means of High-Temperature Confocal Scanning Laser Microscopy (HT-CSLM). The compositions of the slags are carefully selected to induce different phase transformation conditions, i.e. congruent and incongruent melting/solidification. To complement the experimental results, the kinetics of growth and shrinkage of oxide crystals is investigated by means of a sharp interface model where the interfacial reaction and diffusion in the liquid bulk are considered as possible rate-controlling processes. The modelling approach combined with data analysis from key experiments reveals the underlying dissipative processes of solidification and melting phenomena, here, diffusion in the liquid bulk material and/or the interfacial reactions. The modelling approach is likely to be applicable for future materials design and processing problems from this perspective.

引用

页码：1555 / 1564

页数：10

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