ADHESION STRENGTH OFTiNCOATINGS AT VARIOUS ION ETCHING DEPOSITED ON TOOL STEELS USING CATHODIC ARC PVD TECHNIQUE

Mubarak Ali (), Esah Hamzah and Nouman Ali
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Mubarak Ali: Department of Physics, COMSATS Institute of Information Technology (CIIT), Park Road, Islamabad, Pakistan
Esah Hamzah: Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
Nouman Ali: Department of Physics, COMSATS Institute of Information Technology (CIIT), Park Road, Islamabad, Pakistan

Surface Review and Letters (SRL), 2009, vol. 16, issue 01, 29-35

Abstract: Titanium nitride (TiN) widely used as hard coating material was coated on tool steels, namely on high-speed steel (HSS) and D2 tool steel by physical vapor deposition method. The goal of this study was to examine the effect of ion etching with and without titanium (Ti) and chromium (Cr) on the adhesion strength ofTiNcoatings deposited on tool steels. From the scratch tester, it was observed that by increasingTiion etching showed an increase in adhesion strength of the deposited coatings. The coatings deposited withCrion etching showed poor adhesion compared with the coatings deposited withTiion etching. Scratch test measurements showed that the coating deposited with titanium ion etching for 16 min is the most stable coating and maintained even at the critical load of 66 N. The curve obtained via penetration depth along the scratch trace is linear in the case of HSS, whereas is slightly flexible in the case of D2 tool steel. The coatings deposited on HSS exhibit better adhesion compared with those on D2 tool steel.

Keywords: Titanium nitride; ion etching; adhesion; penetration depth (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09012251

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