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

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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)932-936
Number of pages5
JournalMetallurgical and Materials Transactions A
Volume40
Issue number4
DOIs
StatePublished - 24 Feb 2009

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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