| DEBNÁROVÁ, Stanislava, Pavel SOUČEK, Pavel ONDRAČKA, D.M. HOLZAPFEL, S. MRÁZ, J.M. SCHNEIDER and Petr VAŠINA. Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}. Surface and Coatings Technology. Elsevier, 2023, vol. 458, April, p. 1-9. ISSN 0257-8972. Available from: https://dx.doi.org/10.1016/j.surfcoat.2023.129379. |
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@article{2264261,
author = {Debnárová, Stanislava and Souček, Pavel and Ondračka, Pavel and Holzapfel, D.M. and Mráz, S. and Schneider, J.M. and Vašina, Petr},
article_number = {April},
doi = {http://dx.doi.org/10.1016/j.surfcoat.2023.129379},
keywords = {Magnetron sputtering; Thermal stability; Phase formation; X2BC; Borides; Carbides},
language = {eng},
issn = {0257-8972},
journal = {Surface and Coatings Technology},
title = {Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}},
url = {https://doi.org/10.1016/j.surfcoat.2023.129379},
volume = {458},
year = {2023}
}
TY - JOUR
ID - 2264261
AU - Debnárová, Stanislava - Souček, Pavel - Ondračka, Pavel - Holzapfel, D.M. - Mráz, S. - Schneider, J.M. - Vašina, Petr
PY - 2023
TI - Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}
JF - Surface and Coatings Technology
VL - 458
IS - April
SP - 1-9
EP - 1-9
PB - Elsevier
SN - 02578972
KW - Magnetron sputtering
KW - Thermal stability
KW - Phase formation
KW - X2BC
KW - Borides
KW - Carbides
UR - https://doi.org/10.1016/j.surfcoat.2023.129379
N2 - 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.
ER -
DEBNÁROVÁ, Stanislava, Pavel SOUČEK, Pavel ONDRAČKA, D.M. HOLZAPFEL, S. MRÁZ, J.M. SCHNEIDER and Petr VAŠINA. Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures $\{$X = Nb, Ta, W$\}$. \textit{Surface and Coatings Technology}. Elsevier, 2023, vol.~458, April, p.~1-9. ISSN~0257-8972. Available from: https://dx.doi.org/10.1016/j.surfcoat.2023.129379.
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