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.

Original Title

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

Type

journal article in Web of Science

Language

English

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

diamond-like carbon, mechanical properties, tribology

Authors

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

RIV year

2011

Released

1. 4. 2011

ISBN

0925-9635

Periodical

Diamond and Related Materials

Year of study

20

Number

4

State

Kingdom of the Netherlands

Pages from

596

Pages to

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"
}