A comprehensive description of reactions between nickel and aluminum powders during reactive sintering
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000016" target="_blank" >RIV/26316919:_____/21:N0000016 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68378271:_____/21:00549583 RIV/60461373:22310/21:43923033
Výsledek na webu
<a href="https://doi.org/10.1016/j.matchemphys.2021.124941" target="_blank" >https://doi.org/10.1016/j.matchemphys.2021.124941</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchemphys.2021.124941" target="_blank" >10.1016/j.matchemphys.2021.124941</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
A comprehensive description of reactions between nickel and aluminum powders during reactive sintering
Popis výsledku v původním jazyce
In this work, Ni-14Al, Ni-30Al and Ni-58Al alloys representing Ni3Al, NiAl and NiAl3 phases were studied. First of all, they were prepared by reactive sintering to show which phases are present in the obtained microstructure. Subsequently, reactions between nickel and aluminum were observed below and above the melting point of aluminum allowing to propose reaction mechanism and to determine kinetics. Experiments below melting point were carried out as annealing of the powder mixture and phase composition was studied while experiments at higher temperatures used special experimental model consisting bulk nickel and molten aluminum. Results showed that Ni2Al3 phase formed preferentially in all alloy composition, which was supported by in-situ diffraction analysis, and the whole process was controlled by diffusion. Its preferential formation was confirmed by annealing of powder mixture and by the experimental model as well. This model allowed observing the phases' formation at the interface of bulk nickel and molten aluminum at high temperature. The appropriate ongoing reactions were compiled for each alloy with calculated Gibbs energy and enthalpy of reaction.
Název v anglickém jazyce
A comprehensive description of reactions between nickel and aluminum powders during reactive sintering
Popis výsledku anglicky
In this work, Ni-14Al, Ni-30Al and Ni-58Al alloys representing Ni3Al, NiAl and NiAl3 phases were studied. First of all, they were prepared by reactive sintering to show which phases are present in the obtained microstructure. Subsequently, reactions between nickel and aluminum were observed below and above the melting point of aluminum allowing to propose reaction mechanism and to determine kinetics. Experiments below melting point were carried out as annealing of the powder mixture and phase composition was studied while experiments at higher temperatures used special experimental model consisting bulk nickel and molten aluminum. Results showed that Ni2Al3 phase formed preferentially in all alloy composition, which was supported by in-situ diffraction analysis, and the whole process was controlled by diffusion. Its preferential formation was confirmed by annealing of powder mixture and by the experimental model as well. This model allowed observing the phases' formation at the interface of bulk nickel and molten aluminum at high temperature. The appropriate ongoing reactions were compiled for each alloy with calculated Gibbs energy and enthalpy of reaction.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/EF17_048%2F0007350" target="_blank" >EF17_048/0007350: Předaplikační výzkum funkčně graduovaných materiálů pomocí aditivních technologií</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
MATERIALS CHEMISTRY AND PHYSICS
ISSN
0254-0584
e-ISSN
1879-3312
Svazek periodika
271
Číslo periodika v rámci svazku
OCT 1 2021
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
32
Strana od-do
nestránkováno
Kód UT WoS článku
000743064400001
EID výsledku v databázi Scopus
2-s2.0-85110111814