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Title: Phase-diagram study for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system

Abstract

Phase relations for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system were investigated from 1,673 to 1,723 K. The hot-filament technique was applied to observe a two-liquid region and liquidus for the ternary system. The liquidus saturated with SiO{sub 2} was investigated at 1673 K by using the hot-filament technique and the chemical equilibrium technique. In this system, the addition of Al{sub 2}O{sub 3} to the CaF{sub 2}-SiO{sub 2} system reduces the congruent temperature. A small substitution of Al{sub 2}O{sub 3} for CaF{sub 2} increases the solubility of SiO{sub 2}, namely, if the region of liquid phase could be enlarged. These results suggest that Al{sub 2}O{sub 3} would be an effective substitute of CaF{sub 2} in slag for steelmaking.

Authors:
;
Publication Date:
Research Org.:
Univ. of Tokyo (JP)
OSTI Identifier:
20001687
Resource Type:
Journal Article
Journal Name:
Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Additional Journal Information:
Journal Volume: 30; Journal Issue: 5; Other Information: PBD: Oct 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHASE DIAGRAMS; ALUMINIUM OXIDES; CALCIUM FLUORIDES; SILICON OXIDES; TEMPERATURE RANGE 1000-4000 K; LIQUIDS; EQUILIBRIUM; CHEMICAL COMPOSITION

Citation Formats

Ueda, Shigeru, and Maeda, Masafumi. Phase-diagram study for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system. United States: N. p., 1999. Web. doi:10.1007/s11663-999-0097-3.
Ueda, Shigeru, & Maeda, Masafumi. Phase-diagram study for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system. United States. https://doi.org/10.1007/s11663-999-0097-3
Ueda, Shigeru, and Maeda, Masafumi. 1999. "Phase-diagram study for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system". United States. https://doi.org/10.1007/s11663-999-0097-3.
@article{osti_20001687,
title = {Phase-diagram study for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system},
author = {Ueda, Shigeru and Maeda, Masafumi},
abstractNote = {Phase relations for the Al{sub 2}O{sub 3}-CaF{sub 2}-SiO{sub 2} system were investigated from 1,673 to 1,723 K. The hot-filament technique was applied to observe a two-liquid region and liquidus for the ternary system. The liquidus saturated with SiO{sub 2} was investigated at 1673 K by using the hot-filament technique and the chemical equilibrium technique. In this system, the addition of Al{sub 2}O{sub 3} to the CaF{sub 2}-SiO{sub 2} system reduces the congruent temperature. A small substitution of Al{sub 2}O{sub 3} for CaF{sub 2} increases the solubility of SiO{sub 2}, namely, if the region of liquid phase could be enlarged. These results suggest that Al{sub 2}O{sub 3} would be an effective substitute of CaF{sub 2} in slag for steelmaking.},
doi = {10.1007/s11663-999-0097-3},
url = {https://www.osti.gov/biblio/20001687}, journal = {Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science},
number = 5,
volume = 30,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1999},
month = {Fri Oct 01 00:00:00 EDT 1999}
}