The Effect of PVD Tungsten-Based Coatings on Improvement of Hardness and Wear Resistance

0430443 - ÚFP 2015 RIV CH eng C - Conference Paper (international conference)
Horník, J. - Tondl, D. - Sachr, P. - Anisimov, E. - Puchnin, M. - Chráska, Tomáš
The Effect of PVD Tungsten-Based Coatings on Improvement of Hardness and Wear Resistance.
Key Engineering Materials. Vol. 606. Durnten-Zurich: Trans Tech Publications, 2014 - (Haušild, P.), s. 163-166. ISBN 978-3-03835-062-0. ISSN 1013-9826.
[International Conference on Local Mechanical Properties, LMP 2013/10./. Kutná Hora (CZ), 06.11.2013-08.11.2013]
R&D Projects: GA ČR(CZ) GAP108/12/1872
Institutional support: RVO:61389021
Keywords : Tungsten * PVD * nanoindentation * scratch test * adhesion
Subject RIV: JJ - Other Materials
http://www.scientific.net/KEM/2

This article deals with the analysis and evaluation of coatings made by Physical vapor deposition on ceramics substrates. Main focus is on the application of tungsten and tungsten nitride coatings for functionally graded materials (FGM). Firstly suitable deposition parameters of W and WN coatings, prepared by magnetron sputtering, were tested.Test coatings on tool steel substrate exhibited high adhesion and good mechanical and technolo¬gical properties.Both tungsten and tungsten nitride coatings on selected ceramics substrates exhibited good mechanical and technological properties.Properties such as hardness, reduced elastic modulus and wear are discussed for each coating/substrate combination.Both coatings seem to be good candidates for application in field of FGM. The results of the presented experiment shows that the adhesion and the final quality of the coating depends on the type of chemical bond in the coating and in the substrate,and on the ability of the coating to deform
Permanent Link: http://hdl.handle.net/11104/0235388