2022
Synthesis and characterization of Ta–B–C coatings prepared by DCMS and HiPIMS co-sputtering
POLAČEK, Maroš; Pavel SOUČEK; Mostafa ALISHAHI; N. KOUTNÁ; Peter KLEIN et al.Základní údaje
Originální název
Synthesis and characterization of Ta–B–C coatings prepared by DCMS and HiPIMS co-sputtering
Autoři
POLAČEK, Maroš; Pavel SOUČEK; Mostafa ALISHAHI; N. KOUTNÁ; Peter KLEIN; Lukáš ZÁBRANSKÝ; Zsolt CZIGÁNY; K. BALÁZSI a Petr VAŠINA
Vydání
Vacuum, Elsevier, 2022, 0042-207X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.000
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/22:00125392
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Magnetron sputtering; HiPIMS; Ta–B–C; Microstructure; Mechanical properties
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 22. 2. 2024 10:16, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
This study reports on the deposition and properties of Ta–B–C coatings by the co-sputtering of tantalum, boron carbide, and graphite targets using High Power Impulse Magnetron Sputtering (HiPIMS). It was possible to affect the microstructure of the deposited coatings by altering the deposition temperature or by the application of RF induced self-bias on the substrates without changing their chemical composition. The only identified crystalline phase from the Ta–B–C system present was TaC. The boron content in the coatings shows that the TaC crystallite size can be changed by a factor of 10 by changing the power to the boron carbide target. Mechanical properties of the coatings measured directly after the synthesis yield hardness higher than 40 GPa. After the relaxation of internal stress in the coatings (after one year) and changes in the structure, the hardness of all coatings was close to 36 GPa. According to ab initio calculations, the B incorporation in the fcc lattice of TaC in combination with C vacancies lead to lower (higher) shear-to-bulk modulus ratio (Poisson’s ratio), providing a good basis for improved ductility. All in all, Ta–B–C system shows a good potential as a novel hard protective coating.
Návaznosti
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