Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Phase formation of powders sputtered from X2BC targets and XC+XB powder mixtures {X = Nb, Ta, W}

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

1879-3347

Volume of the periodical

458

Issue of the periodical within the volume

April

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000991940400001

EID of the result in the Scopus database

2-s2.0-85149420412