Interfacial chemical interactions in the (alumina/graphite/ al alloys) system: Thermodynamic modeling and experimental results

M. Gelbstein; I. Edry; N. Froumin; N. Frage

doi:10.1007/s11661-008-9773-1

Interfacial chemical interactions in the (alumina/graphite/ al alloys) system: Thermodynamic modeling and experimental results

M. Gelbstein, I. Edry, N. Froumin, N. Frage

Department of Materials Engineering

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

4 Scopus citations

Abstract

The stability of alumina-coated graphite couples in liquid Al is investigated in the 1373 to 1573 K temperature range. A thermodynamic model was carried out to determine the mechanisms controlling the couple stability and the effect of alloying Al with high melting point element for instance U (up to 3 at. pct). It was established that the dissolved uranium dose not play any role in the interfacial interactions and that the couple stability is governed by the interactions with Al resulting in the release of gaseous products. The experiments focused on wetting kinetics under conditions allowing for an in-situ reduction of the alumina coating by the liquid Al. The experimental results confirm the predictions of the thermodynamic analysis.

Original language	English
Pages (from-to)	932-936
Number of pages	5
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	40
Issue number	4
DOIs	https://doi.org/10.1007/s11661-008-9773-1
State	Published - 24 Feb 2009

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-008-9773-1

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abstract = "The stability of alumina-coated graphite couples in liquid Al is investigated in the 1373 to 1573 K temperature range. A thermodynamic model was carried out to determine the mechanisms controlling the couple stability and the effect of alloying Al with high melting point element for instance U (up to 3 at. pct). It was established that the dissolved uranium dose not play any role in the interfacial interactions and that the couple stability is governed by the interactions with Al resulting in the release of gaseous products. The experiments focused on wetting kinetics under conditions allowing for an in-situ reduction of the alumina coating by the liquid Al. The experimental results confirm the predictions of the thermodynamic analysis.",

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Interfacial chemical interactions in the (alumina/graphite/ al alloys) system: Thermodynamic modeling and experimental results. / Gelbstein, M.; Edry, I.; Froumin, N. et al.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 40, No. 4, 24.02.2009, p. 932-936.

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

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AU - Gelbstein, M.

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AU - Froumin, N.

AU - Frage, N.

PY - 2009/2/24

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AB - The stability of alumina-coated graphite couples in liquid Al is investigated in the 1373 to 1573 K temperature range. A thermodynamic model was carried out to determine the mechanisms controlling the couple stability and the effect of alloying Al with high melting point element for instance U (up to 3 at. pct). It was established that the dissolved uranium dose not play any role in the interfacial interactions and that the couple stability is governed by the interactions with Al resulting in the release of gaseous products. The experiments focused on wetting kinetics under conditions allowing for an in-situ reduction of the alumina coating by the liquid Al. The experimental results confirm the predictions of the thermodynamic analysis.

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Interfacial chemical interactions in the (alumina/graphite/ al alloys) system: Thermodynamic modeling and experimental results

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