Publication detail

Evaluation of hardness, tribological behaviour and impact load of carbon-based hard composite coatings exposed to the influence of humidity.

SOBOTA, J. BURŠÍKOVÁ, V. GROSSMAN, J. DUPÁK, L.

English title

Evaluation of hardness, tribological behaviour and impact load of carbon-based hard composite coatings exposed to the influence of humidity.

Type

WoS Article

Language

en

Original abstract

Diamond-like composite coatings were deposited by PACVD with an interface magnetron sputtered metallic layer prepared by d.c. unbalanced magnetron sputtering onto HSS substrates. The focus of the present work was on the study of the humidity effect on the tribological properties, hardness and impact resistance of the deposited coatings. The coatings were tested under both dry and humid conditions using several testing methods, like the pin-on-disc test equipped with linear reciprocating movement, impact test and depth sensing indentation test. It was found that the humidity may substantially influence not only the results of tribological tests, but surprisingly, also the results of the dynamic wear and hardness tests. By increasing the relative humidity, the value of dynamic impact resistance increased at an equivalent stress of 1.6 GPa more than three times. On the other hand, the wear rate of the coated part increased by more than four orders of magnitude.

Keywords in English

diamond-like carbon, mechanical properties, tribology

Released

2011-04-01

ISSN

0925-9635

Journal

DIAMOND AND RELATED MATERIALS

Volume

20

Number

4

Pages from–to

596–599

Pages count

4

BIBTEX


@article{BUT88488,
  author="Jaroslav {Sobota} and Vilma {Buršíková} and Jan {Grossman} and Libor {Dupák}",
  title="Evaluation of hardness, tribological behaviour and impact load of carbon-based hard composite coatings exposed to the influence of humidity.",
  journal="DIAMOND AND RELATED MATERIALS",
  year="2011",
  volume="20",
  number="4",
  pages="596--599",
  issn="0925-9635"
}