Tribological properties of W-B-C protective coatings prepared
by pulsed DC magnetron sputtering

a 2017

Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering

DEBNÁROVÁ, Stanislava, Pavel SOUČEK, Vilma BURŠÍKOVÁ, Lukáš ZÁBRANSKÝ, Yutao PEI et. al.

Základní údaje

Originální název

Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering

Autoři

DEBNÁROVÁ, Stanislava (703 Slovensko, domácí), Pavel SOUČEK (203 Česká republika, garant, domácí), Vilma BURŠÍKOVÁ (203 Česká republika, domácí), Lukáš ZÁBRANSKÝ (203 Česká republika, domácí) a Yutao PEI (528 Nizozemské království)

Vydání

The 16th International Conference on Reactive Sputter Deposition (RSD), 2017

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10305 Fluids and plasma physics

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/17:00095241

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-80-261-0754-5

Klíčová slova anglicky

magnetron sputtering; thin films; protective coatings; W-B-C

Změněno: 7. 12. 2017 15:30, Mgr. Stanislava Debnárová, Ph.D.

Anotace

V originále

One of the many applications of thin films is the protection of tools, as appropriate coatings increase the tool’s efficiency and lifetime. Hard ceramics such as TiN, TiAlN and c-BN are the most commonly used materials for this purpose. However, these materials exhibit brittle behaviour, which facilitates the formation and spreading of cracks in the coating. A solution for this problem would be materials that are simultaneously hard and ductile. This seemingly contradictory combination of properties has been predicted in a group of materials consisting of a metal, boron and carbon. W-B-C has been predicted to have the highest toughness and ductility out of this group and will therefore be the subject of this study. Mid-frequency pulsed-DC magnetron sputtering was used to deposit W-B-C coatings in this study. The effect of coating composition and the deposition parameters on the structure, mechanical and tribological properties of the coatings is investigated. X-ray diffractometry has shown a low level of crystallinity due to high enthalpy of formation of W2BC crystalline phase. Hardness of the coatings ranged from 21.5 to 27 GPa. Main emphasis was placed on the tribological properties of the coatings. The influence of the deposition conditions on the coefficient of friction and wear was examined. Furthermore, the influence of the measuring temperature on the tribological properties of the coatings was investigated during high temperature tests. It was found that the deposition temperature and the measuring temperature had the greatest influence on the properties of the coatings. Coatings prepared at elevated temperature showed significantly lower wear and better adhesion. The coefficient of friction decreased with increasing temperature of the substrate during measurement. Coating composition measurements after high temperature tests have shown that this decrease was due to the formation of W-O Magnéli phases, which acted as a solid-state lubricant.

Návaznosti

GA15-17875S, projekt VaV

Název: Lokální mikrostrukturní změny vyvolané statickou a dynamickou indentací nanostrukturovaných a nanolaminovaných povlaků

Investor: Grantová agentura ČR, Lokální mikrostrukturní změny vyvolané statickou a dynamickou indentací nanostrukturovaných a nanolaminovaných povlaků

LO1411, projekt VaV

Název: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Akronym: CEPLANT plus)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

Citovat

DEBNÁROVÁ, Stanislava, Pavel SOUČEK, Vilma BURŠÍKOVÁ, Lukáš ZÁBRANSKÝ a Yutao PEI. Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering. In The 16th International Conference on Reactive Sputter Deposition (RSD). 2017. ISBN 978-80-261-0754-5.

@proceedings{1398315,
   author = {Debnárová, Stanislava and Souček, Pavel and Buršíková, Vilma and Zábranský, Lukáš and Pei, Yutao},
   booktitle = {The 16th International Conference on Reactive Sputter Deposition (RSD)},
   keywords = {magnetron sputtering; thin films; protective coatings; W-B-C},
   language = {eng},
   isbn = {978-80-261-0754-5},
   title = {Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering},
   year = {2017}
}

TY  - CONF
ID  - 1398315
AU  - Debnárová, Stanislava - Souček, Pavel - Buršíková, Vilma - Zábranský, Lukáš - Pei, Yutao
PY  - 2017
TI  - Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering
SN  - 9788026107545
KW  - magnetron sputtering
KW  - thin films
KW  - protective coatings
KW  - W-B-C
N2  - One of the many applications of thin films is the protection of tools, as appropriate coatings increase the tool’s efficiency and lifetime. Hard ceramics such as TiN, TiAlN and c-BN are the most commonly used materials for this purpose. However, these materials exhibit brittle behaviour, which facilitates the formation and spreading of cracks in the coating. A solution for this problem would be materials that are simultaneously hard and ductile. This seemingly contradictory combination of properties has been predicted in a group of materials consisting of a metal, boron and carbon. W-B-C has been predicted to have the highest toughness and ductility out of this group and will therefore be the subject of this study. Mid-frequency pulsed-DC magnetron sputtering was used to deposit W-B-C coatings in this study. The effect of coating composition and the deposition parameters on the structure, mechanical and tribological properties of the coatings is investigated. X-ray diffractometry has shown a low level of crystallinity due to high enthalpy of formation of W2BC crystalline phase. Hardness of the coatings ranged from 21.5 to 27 GPa. Main emphasis was placed on the tribological properties of the coatings. The influence of the deposition conditions on the coefficient of friction and wear was examined. Furthermore, the influence of the measuring temperature on the tribological properties of the coatings was investigated during high temperature tests. It was found that the deposition temperature and the measuring temperature had the greatest influence on the properties of the coatings. Coatings prepared at elevated temperature showed significantly lower wear and better adhesion. The coefficient of friction decreased with increasing temperature of the substrate during measurement. Coating composition measurements after high temperature tests have shown that this decrease was due to the formation of W-O Magnéli phases, which acted as a solid-state lubricant.
ER  -

DEBNÁROVÁ, Stanislava, Pavel SOUČEK, Vilma BURŠÍKOVÁ, Lukáš ZÁBRANSKÝ a Yutao PEI. Tribological properties of W-B-C protective coatings prepared by pulsed DC magnetron sputtering. In \textit{The 16th International Conference on Reactive Sputter Deposition (RSD)}. 2017. ISBN~978-80-261-0754-5.

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