The Effect of Niobium and Carbon on the Oxidation Resistance of Alloys Based on Fe3Al at 900°C

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F22%3A00009747" target="_blank" >RIV/46747885:24210/22:00009747 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/content/pdf/10.1007/s11085-022-10111-9.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s11085-022-10111-9.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11085-022-10111-9" target="_blank" >10.1007/s11085-022-10111-9</a>

Result language
angličtina
Original language name
The Effect of Niobium and Carbon on the Oxidation Resistance of Alloys Based on Fe3Al at 900°C
Original language description
The cyclic oxidation behaviour of Fe-26Al-3Nb, Fe-27Al-5Nb and Fe-26Al-5Nb-1.4C (in at%) was investigated at 900 degrees C. Chemical and phase analyses of the scale and oxide protrusions were conducted using light optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction. The oxidation resistance of the tested alloys was determined using fractal dimension, and the results were compared with Fe-26Al-0.3Zr, Fe-26Al-1Zr (at%) and EN X5CrNi18-10 steel. The oxidation kinetics of Fe-26Al-3Nb and Fe-27Al-5Nb follow the parabolic rate law. Oxidation ingress into the alloys was observed due to the preferential oxidation of niobium-rich precipitates. Therefore, the oxidation rate of tested alloys increased with increasing amounts of particles of Laves phase (Fe, Al)(2)Nb and NbC. The niobium carbides oxidised more readily than the particles of Laves phase (Fe, Al)(2)Nb. The cyclic oxidation of Fe-Al-Nb and Fe-Al-Nb-C alloys at 900 degrees C led to the formation of oxide scales composed of Al2O3, Fe2O3 and AlNbO4 (or non-stoichiometric AlNbO4).
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybrid Materials for Hierarchical Structure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)