2002, French, Article edition: Application d'un modèle de réaction en phase gazeuse à l'oxydation d'un alliage liquide Al-Mg 5% sous faible pression d'oxygène Surla, Karine; Valdivieso, Françoise; Pijolat, Michèle; ...

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Bookmark: http://trove.nla.gov.au/version/200359
Physical Description
  • text
Published
  • HAL - CCSD
  • 2002
Language
  • French

Edition details

Title
  • Application d'un modèle de réaction en phase gazeuse à l'oxydation d'un alliage liquide Al-Mg 5% sous faible pression d'oxygène
Author
  • Surla, Karine
  • Valdivieso, Françoise
  • Pijolat, Michèle
  • Soustelle, Michel
  • Prin-Lamaze, Marie-Agnès
Published
  • HAL - CCSD
  • 2002
Physical Description
  • text
Subjects
Notes
  • Application of a model of reaction in the gaseous phase to the oxidation of a liquid Al-5%Mg alloy at low oxygen pressure. The oxidation of a liquid Al-5%Mg alloy was studied by isothermal (700°C) and isobaric thermogravimetry, under controlled oxygen partial pressure (lower than 50hPa). At low oxygen pressure, the reaction proceeds in the gaseous phase, due to the evaporation of magnesium from the alloy. A model exists in the literature to describe such reactions ; we verified experimentally that the assumptions of this model could be made for our reacting system; consequently, the variations of the oxidation rate with oxygen partial pressure were accounted for. -------- L'oxydation d'un alliage Al-Mg5% à l'état liquide a été étudiée par thermogravimétrie isotherme (700°C) et isobare, sous pression d'oxygène contrôlée, inférieure à 50 hPa. En effet, à faible pression d'oxygène, la réaction se déroule en phase gazeuse, du fait de l'évaporation du magnésium de l'alliage. L'utilisation d'un modèle proposé dans la littérature, dont nous avons vérifié expérimentalement la validité des hypothèses, a permis d'interpréter les variations de la vitesse d'oxydation avec la pression d'oxygène
  • HAL:hal-00409100, version 1
  • HAL:http:/​/​hal.archives-ouvertes.fr/​hal-00409100/​en/​
Language
  • French
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