Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00130406" target="_blank" >RIV/00216224:14310/23:00130406 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.surfcoat.2023.129379" target="_blank" >https://doi.org/10.1016/j.surfcoat.2023.129379</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.surfcoat.2023.129379" target="_blank" >10.1016/j.surfcoat.2023.129379</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}
Popis výsledku v původním jazyce
In this work, the phase formation and thermal stability of X-B-C powders are investigated, where X = {Nb, Ta, and W}. X-B-C powders are synthesized by pulsed-DC magnetron sputtering and compared to annealed mixtures of commercially available monocarbide and monoboride powders. The phase formation of all powders is investigated before and after annealing to 1500 °C in a protective atmosphere. Before annealing, powders prepared from coatings sputtered from X2BC targets exhibited a nanocomposite structure with small XC grains in the case of the Nb-B-C and Ta-B-C powders. No crystalline phases could be identified in the W-B-C powder. Annealing resulted in a significant increase in crystallite size and the formation of additional phases in all sputtered coating powders. Commercial powder mixtures showed XC and XB phases before and after annealing with no evidence of forming additional phases and minor exothermic reactions were observed by DSC measurements, which were linked to grain growth. No formation of the X2BC phases was observed. This can be explained by the energetically favorable binary XC and XB phases over the ternary X2BC phase in the case of Ta and W. The ternary Nb2BC phase was not observed despite being energetically favorable over binary phases, likely due to kinetic limitations.
Název v anglickém jazyce
Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}
Popis výsledku anglicky
In this work, the phase formation and thermal stability of X-B-C powders are investigated, where X = {Nb, Ta, and W}. X-B-C powders are synthesized by pulsed-DC magnetron sputtering and compared to annealed mixtures of commercially available monocarbide and monoboride powders. The phase formation of all powders is investigated before and after annealing to 1500 °C in a protective atmosphere. Before annealing, powders prepared from coatings sputtered from X2BC targets exhibited a nanocomposite structure with small XC grains in the case of the Nb-B-C and Ta-B-C powders. No crystalline phases could be identified in the W-B-C powder. Annealing resulted in a significant increase in crystallite size and the formation of additional phases in all sputtered coating powders. Commercial powder mixtures showed XC and XB phases before and after annealing with no evidence of forming additional phases and minor exothermic reactions were observed by DSC measurements, which were linked to grain growth. No formation of the X2BC phases was observed. This can be explained by the energetically favorable binary XC and XB phases over the ternary X2BC phase in the case of Ta and W. The ternary Nb2BC phase was not observed despite being energetically favorable over binary phases, likely due to kinetic limitations.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20506 - Coating and films
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Surface and Coatings Technology
ISSN
0257-8972
e-ISSN
1879-3347
Svazek periodika
458
Číslo periodika v rámci svazku
April
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
9
Strana od-do
1-9
Kód UT WoS článku
000991940400001
EID výsledku v databázi Scopus
2-s2.0-85149420412