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Evaluation of hardness, tribological behaviour and impact load of carbon-based hard composite coatings exposed to the influence of humidity
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SYSNO ASEP 0366083 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evaluation of hardness, tribological behaviour and impact load of carbon-based hard composite coatings exposed to the influence of humidity Author(s) Sobota, Jaroslav (UPT-D) RID, ORCID, SAI
Grossman, Jan (UPT-D) RID
Buršíková, V. (CZ)
Dupák, Libor (UPT-D) RID, ORCID, SAI
Vyskočil, J. (CZ)Source Title Diamond and Related Materials. - : Elsevier - ISSN 0925-9635
Roč. 20, č. 4 (2011), s. 596-599Number of pages 4 s. Language eng - English Country CH - Switzerland Keywords diamond-like carbon ; mechanical properties ; tribology Subject RIV JK - Corrosion ; Surface Treatment of Materials R&D Projects 2A-1TP1/031 GA MPO - Ministry of Industry and Trade (MPO) GA202/07/1669 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20650511 - UPT-D (2005-2011) UT WOS 000291140200028 EID SCOPUS 79954990328 DOI 10.1016/j.diamond.2011.01.011 Annotation 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. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2012
Number of the records: 1