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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

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

Popis výsledku anglicky

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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybridní materiály pro hierarchické struktury</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Oxidation of Metals

ISSN

0030-770X

e-ISSN

—

Svazek periodika

98

Číslo periodika v rámci svazku

3-4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

31

Strana od-do

77-107

Kód UT WoS článku

000782874200001

EID výsledku v databázi Scopus

2-s2.0-85128202226