Al-coated iron particles: Synthesis, characterization and improvement of oxidation resistance
| Autor: | F. Pailloux, Sylvain Dubois, V. Gauthier-Brunet, J. Mimault, F. Jay, S. Bucher |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Metallurgy chemistry.chemical_element Surfaces and Interfaces General Chemistry Chemical vapor deposition engineering.material Condensed Matter Physics Surfaces Coatings and Films chemistry.chemical_compound chemistry Coating Chemical engineering Triethylaluminium Aluminium Fluidized bed Materials Chemistry engineering Aluminium oxide Inert gas Layer (electronics) |
| Zdroj: | Surface and Coatings Technology. 202:4302-4306 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2008.04.001 |
| Popis: | A Fluidized Bed Metal Organic Chemical Vapour Deposition (FB-MOCVD) process has been successfully applied to coat Fe particles with Al. N 2 inert gas was used to transport the organometallic Al precursor (liquid triethylaluminium) inside the fluidized bed reactor whose temperature is 350 °C. XPS analyses and TEM observations have revealed the presence of a thin alumina layer surrounding the Al coating. Oxidation treatments, performed in the temperature range 350–500 °C, demonstrate that this multi-scale coating constitutes an efficient barrier to protect iron particles against oxidation. Such a treatment may be used to perform environmental barrier coatings around magnetic powders. |
| Databáze: | OpenAIRE |
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