Exploring the possibility of protective surface oxides upon Mg alloy AZ31 via lutetium additions
| Autor: | Sebastián Feliu, Irene Llorente, Kateryna Gusieva, Alejandro Samaniego, Nick Birbilis |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Magnesium General Chemical Engineering Metallurgy Inorganic chemistry Alloy chemistry.chemical_element General Chemistry Lutetium engineering.material Corrosion AZ31 Matrix (chemical analysis) X-ray photoelectron spectroscopy chemistry Heat treated engineering General Materials Science Magnesium alloy Rare earth elements |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0010-938X |
| Popis: | In the present study, Mg-alloy AZ31 was alloyed with low-level lutetium (Lu) additions, with the aim of generating a more protective surface oxide/film. To stimulate Lu-rich surface films, AZ31 + Lu specimens were heat treated at 400 °C for up to 300 min. Lu was not detected in the ¿-Mg matrix by EDXS; instead it was incorporated in Al¿Mn¿Lu particles. Micro-additions of Lu promoted a significant reduction of corrosion rates of as-cast AZ31, although Lu was not detected in the surface oxide as determined by XPS. The subsequent heat treatment of as-cast AZ31 + Lu had a negative impact upon corrosion. |
| Databáze: | OpenAIRE |
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