Interaction coefficient between Al and Sn in molten high Al steel

Kengo Sugiyama; Shigeru Ueda; Xu Gao; Sunjoong Kim; Shinya Kitamura

doi:10.2355/isijinternational.ISIJINT-2019-550

Interaction coefficient between Al and Sn in molten high Al steel

Kengo Sugiyama, Shigeru Ueda, Xu Gao, Sunjoong Kim, Shinya Kitamura

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The interaction coefficient between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe-Al alloy was equilibrated with a molten Ag-Sn alloy in an Al₂O₃ crucible at 1 823 K. The interaction coefficient of Sn and Al in Fe-Al alloys was measured to be ε_Sn^Al = -3.18 while varying the concentration of Al in a range from 0.01-0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction coefficient. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.

Original language	English
Pages (from-to)	2147-2151
Number of pages	5
Journal	Isij International
Volume	60
Issue number	10
DOIs	https://doi.org/10.2355/isijinternational.ISIJINT-2019-550
Publication status	Published - 2020 Oct 15

Keywords

Activity coefficient
Al
High Al steel
Interaction coefficient
Sn

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.ISIJINT-2019-550

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title = "Interaction coefficient between Al and Sn in molten high Al steel",

abstract = "The interaction coefficient between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe-Al alloy was equilibrated with a molten Ag-Sn alloy in an Al2O3 crucible at 1 823 K. The interaction coefficient of Sn and Al in Fe-Al alloys was measured to be εSnAl = -3.18 while varying the concentration of Al in a range from 0.01-0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction coefficient. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.",

keywords = "Activity coefficient, Al, High Al steel, Interaction coefficient, Sn",

author = "Kengo Sugiyama and Shigeru Ueda and Xu Gao and Sunjoong Kim and Shinya Kitamura",

note = "Funding Information: Authors thanks to the member of research group Thermodynamics of Deoxidizing Elements, Transition Metals and Tramp Elements in Steel of ISIJ, for their appropriate advices. Publisher Copyright: {\textcopyright} 2020 The Iron and Steel Institute of Japan. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license (https://creativecommons.org/licenses/by-nc-nd/4.0/).",

year = "2020",

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day = "15",

doi = "10.2355/isijinternational.ISIJINT-2019-550",

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T1 - Interaction coefficient between Al and Sn in molten high Al steel

AU - Sugiyama, Kengo

AU - Ueda, Shigeru

AU - Gao, Xu

AU - Kim, Sunjoong

AU - Kitamura, Shinya

N1 - Funding Information: Authors thanks to the member of research group Thermodynamics of Deoxidizing Elements, Transition Metals and Tramp Elements in Steel of ISIJ, for their appropriate advices. Publisher Copyright: © 2020 The Iron and Steel Institute of Japan. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license (https://creativecommons.org/licenses/by-nc-nd/4.0/).

PY - 2020/10/15

Y1 - 2020/10/15

N2 - The interaction coefficient between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe-Al alloy was equilibrated with a molten Ag-Sn alloy in an Al2O3 crucible at 1 823 K. The interaction coefficient of Sn and Al in Fe-Al alloys was measured to be εSnAl = -3.18 while varying the concentration of Al in a range from 0.01-0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction coefficient. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.

AB - The interaction coefficient between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe-Al alloy was equilibrated with a molten Ag-Sn alloy in an Al2O3 crucible at 1 823 K. The interaction coefficient of Sn and Al in Fe-Al alloys was measured to be εSnAl = -3.18 while varying the concentration of Al in a range from 0.01-0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction coefficient. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.

KW - Activity coefficient

KW - Al

KW - High Al steel

KW - Interaction coefficient

KW - Sn

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DO - 10.2355/isijinternational.ISIJINT-2019-550

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JO - Transactions of the Iron and Steel Institute of Japan

JF - Transactions of the Iron and Steel Institute of Japan

IS - 10

ER -

Interaction coefficient between Al and Sn in molten high Al steel

Abstract

Keywords

ASJC Scopus subject areas

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