Influence of atmosphere on high‐temperature oxidation of Fe‐Cr‐Si model alloy

Autor: Stéphane Mathieu, Henri Buscail, Christophe Issartel
Přispěvatelé: Laboratoire Vellave sur l’Élaboration et l'Etude des Matériaux (LVEEM), Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Institut Jean Lamour (IJL), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2019
Předmět:
Materials science
Hydrogen
Silicon
020209 energy
Alloy
ferritic alloy
chemistry.chemical_element
02 engineering and technology
[CHIM.INOR]Chemical Sciences/Inorganic chemistry
engineering.material
Atmosphere
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
[CHIM.CRIS]Chemical Sciences/Cristallography
0202 electrical engineering
electronic engineering
information engineering
Materials Chemistry
Environmental Chemistry
Si model
Low oxygen
Mechanical Engineering
Metals and Alloys
[CHIM.MATE]Chemical Sciences/Material chemistry
General Medicine
high temperature oxidation
Nitrogen
Chromia
Surfaces
Coatings and Films
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
N 2 -5 vol% H 2
Chemical engineering
chemistry
silica
13. Climate action
Mechanics of Materials
chromia
engineering
Zdroj: Materials and Corrosion / Werkstoffe und Korrosion
Materials and Corrosion / Werkstoffe und Korrosion, 2019, 70 (8), pp.1410-1415. ⟨10.1002/maco.201810579⟩
Materials and Corrosion / Werkstoffe und Korrosion, Wiley-VCH Verlag, 2019, 70 (8), pp.1410-1415. ⟨10.1002/maco.201810579⟩
ISSN: 1521-4176
0947-5117
DOI: 10.1002/maco.201810579
Popis: International audience; The aim of this work is to show the influence of the gaseous environment on the ferritic Fe-Cr-Si model alloy oxidation during 70 h, at 900 °C and 950 °C. Two different atmospheres have been used: air or nitrogen containing 5 Vol.% hydrogen (N 2-5%H 2). After air oxidation, a non-adherent chromia scale formed. In the N 2-5%H 2 gaseous environment, it clearly appears that silicon segregation near the internal scale-metal interface is favoured. In this low oxygen containing gas, adherent chromia and silica scales have been formed. Silica subscale associated to an adherent chromia scale obtained in low oxygen conditions are a good protection barrier against carburisation.
Databáze: OpenAIRE
Externí odkaz: