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Growth defects and surface roughness in TiN-coated tool steel at various N2 gas flow rates using cathodic arc PVD technique

Hamzah, Esah and M., Ali and I. A., Qazi and M. R. M., Toff (2010) Growth defects and surface roughness in TiN-coated tool steel at various N2 gas flow rates using cathodic arc PVD technique. Materials Science Forum, 636 (637). 965 - 970. ISSN 1662-9752

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.6...

Abstract

In the present study, titanium nitride coatings on tool steel were deposited using cathodic arc physical vapour deposition technique. We studied and discussed the effect of various nitrogen gas flow rate on the surface properties of TiN-coated steel. The coating properties investigated in this work include the surface morphology, surface roughness, line profile and fractal dimension analyses using atomic force microscope. Minimum values for surface roughness, line profile and fractal dimension analyses were recorded at nitrogen gas flow rate of 200 sccm. This is mainly because of the reduction in macro-droplets and minimization of the growth defects, usually produced during etching and deposition stages. Critical limit of nitrogen gas flow rate in TiN coatings were identified and considered an important aspect to understand the performance of TiN PVD-coated steel.

Item Type:Article
Uncontrolled Keywords:Atomic Force Microscope (AFM), macro-droplet, surface roughness (SR)
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:26185
Deposited By: Liza Porijo
Deposited On:28 Jun 2012 00:53
Last Modified:17 Aug 2014 04:23

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