Observation of Coating-Substrate Adhesion of Nanocomposite Hard Coating with Respect to the Deposition Parameters and Surface Finishing of Cemented Carbide Substrate

The paper deals with the issue of coating and surface finishing with edge preparation prior to the coating. Nanocomposite AlCrSiN hard coatings were deposited on WC-Co substrates with a negative substrate bias voltage in range of-80 to-120 V using cathodic arc evaporation system. The effect of varia...

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Bibliographic Details
Published inMaterials science forum Vol. 990; pp. 231 - 238
Main Authors Vopát, Tomáš, Haršáni, Marián, Zlámal, Tomáš, Sahul, Martin, Vortel, Ondrej
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 08.05.2020
Subjects
Adhesion tests
Bias
Cemented carbides
Cobalt
Electric potential
Electron microscopes
Hard surfacing
Hardness tests
Indentation
Nanocomposites
Nanohardness
Plastic deformation
Substrates
Surface finishing
Surface roughness
Tungsten carbide
Voltage
Nanocomposite Hard Coating
Brushing
Coating-Substrate Adhesion
Wet Microblasting
Edge Preparation
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Summary:The paper deals with the issue of coating and surface finishing with edge preparation prior to the coating. Nanocomposite AlCrSiN hard coatings were deposited on WC-Co substrates with a negative substrate bias voltage in range of-80 to-120 V using cathodic arc evaporation system. The effect of variation in the bias voltage on the coating-substrate adhesion and nanohardness was investigated. The maximum nanohardness of coating was 37.7 ± 1.5 GPa with the good coating-substrate adhesion. Static Mercedes indentation test was performed on a Rockwell-type hardness tester. The indents were studied by scanning electron microscope to evaluate the coating-substrate adhesion. The H to E ratio that represents resistance to the plastic deformation was determined. The influence of surface roughness and time of used surface finishing methods on the coating-substrate adhesion was also investigated.
Bibliography:Selected, peer reviewed papers from the 8th International Conference on Nanostructures, Nanomaterials and Nanoengineering 2019 (ICNNN 2019) and from 2019 International Conference on Materials Technology and Applications (ICMTA 2019), October 11-14, 2019, Kyoto, Japan
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.990.231