Oxidation resistance of Fe-25Al-2Ta (at.%) in air

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F10%3A%230001613" target="_blank" >RIV/46747885:24210/10:#0001613 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Oxidation resistance of Fe-25Al-2Ta (at.%) in air
Original language description
The high-temperature oxidation behaviour of Fe?25Al?2Ta (in at.%) has been investigated between 600 and 1000 °C using thermogravimetric analysis (TGA) in synthetic air. After oxidation for 1000 h the scales were analysed by light optical microscopy (LOM), grazing incidents X-ray diffraction (GI-XRD), scanning electron microscopy (SEM), and electron probe microanalysis (EPMA). Between 600 and 800 °C thin adherent oxide scales grew according to a parabolic rate law. At 900 °C parabolic growth was observedfor several hundred hours, interrupted by sudden mass gains which are probably caused by cracking of the scales, while at 1000 °C no protective scales formed. The scales are predominantly formed by Al2O3 and minor amounts of Fe2O3. While scales formed between 600 and 800 °C are still adherent after cooling to room temperature, scales formed at higher temperatures spalled during/after cooling, possibly because the Laves phase Fe2Ta formed on the sample surfaces underneath the oxide scale
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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