Thermal stability of hard nanocomposite Mo-B-C coatings

ZÁBRANSKÝ, Lukáš, Vilma BURŠÍKOVÁ, Pavel SOUČEK, Petr VAŠINA, Ján DUGÁČEK, Pavel SŤAHEL, Jiří BURŠÍK, Milan SVOBODA and Vratislav PEŘINA. Thermal stability of hard nanocomposite Mo-B-C coatings. Vacuum. Oxford: PERGAMON-ELSEVIER SCIENCE, 2017, vol. 138, No 2017, p. 199-204. ISSN 0042-207X. Available from: https://dx.doi.org/10.1016/j.vacuum.2016.12.016.

Basic information

• Original name: Thermal stability of hard nanocomposite Mo-B-C coatings
• Authors: ZÁBRANSKÝ, Lukáš (203 Czech Republic, belonging to the institution), Vilma BURŠÍKOVÁ (203 Czech Republic, guarantor, belonging to the institution), Pavel SOUČEK (203 Czech Republic, belonging to the institution), Petr VAŠINA (203 Czech Republic, belonging to the institution), Ján DUGÁČEK (703 Slovakia, belonging to the institution), Pavel SŤAHEL (203 Czech Republic, belonging to the institution), Jiří BURŠÍK (203 Czech Republic), Milan SVOBODA (203 Czech Republic) and Vratislav PEŘINA (203 Czech Republic).
• Edition: Vacuum, Oxford, PERGAMON-ELSEVIER SCIENCE, 2017, 0042-207X.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10305 Fluids and plasma physics
• Country of publisher: United Kingdom of Great Britain and Northern Ireland
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 2.067
• RIV identification code: RIV/00216224:14310/17:00094644
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.vacuum.2016.12.016
• UT WoS: 000395611600030
• Keywords in English: Thermal stability; Mo2BC coatings; Hardness; Fracture resistance
• Tags: NZ, rivok
• Tags: International impact, Reviewed

Abstract

In the present work, nanocomposite Mo-B-C coatings were deposited on high speed steel and hard metal substrates by magnetron sputtering of three targets. These coatings were subjected to annealing to final temperatures in the range from 500 °C to 1000 °C. It was found that the as deposited Mo-B-C coatings exhibited hardness of ~20 GPa, nanocomposite microstructure with very fine grains (~2 nm) and low degree of crystallinity. The X-ray diffraction and transmission electron microscopy together with selective area electron diffraction were used to study the temperature induced changes of the micro-structure of the coating and its crystallinity. The annealing process significantly improved the hardness (from ~20 GPa to ~30 GPa) and effective elastic modulus (from initial 330 GPa -500 GPa) of coatings while their resistance to fracture was kept sufficiently high.

Links

• ED2.1.00/03.0086, research and development project: Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
• GA15-17875S, research and development project: Name: Lokální mikrostrukturní změny vyvolané statickou a dynamickou indentací nanostrukturovaných a nanolaminovaných povlaků

Investor: Czech Science Foundation

• LO1411, research and development project: Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)

Investor: Ministry of Education, Youth and Sports of the CR