Steam oxidation of aluminide coatings under high pressure and for long exposures
| Autor: | Claire Boulesteix, Fernando Pedraza, Vladislav Kolarik |
|---|---|
| Přispěvatelé: | Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 (LaSIE), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Publica |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering Diffusion Iron oxide Oxide 02 engineering and technology engineering.material Corrosion chemistry.chemical_compound Coating Oxidation Pressure 0202 electrical engineering electronic engineering information engineering General Materials Science Metallurgy Aluminium diffusion coatings [CHIM.MATE]Chemical Sciences/Material chemistry General Chemistry 021001 nanoscience & nanotechnology Steam chemistry Ferritic-martensitic steels Slurry engineering 0210 nano-technology Layer (electronics) Aluminide |
| Zdroj: | Corrosion Science Corrosion Science, Elsevier, 2018, 144, pp.328-338. ⟨10.1016/j.corsci.2018.08.053⟩ |
| ISSN: | 0010-938X |
| Popis: | International audience; B2-FeAl-based aluminide coatings were elaborated on P92 ferritic-martensitic steels by slurry. Under atmospheric pressure of steal and 650°C, a thin protective α-Al 2 O 3 oxide layer formed and was maintained until 5000 h. With increasing pressure to 300 bar, the morphology of α-Al 2 O 3 changed markedly. Iron oxide clusters started to appear at the surface of the scale after 5000 h of exposure and kept on growing till 10000 h. It appears that pressure increased the outward diffusion of Fe through the coating and through the oxide scale and fostered the propagation of the tensile cracks of the coating. |
| Databáze: | OpenAIRE |
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