INFLUENCE OF NITROGEN FLOW RATE ON FRICTION COEFFICIENT AND SURFACE ROUGHNESS OFTiNCOATINGS DEPOSITED ON TOOL STEEL USING ARC METHOD

Esah Hamzah (), Ali Ourdjini (), Mubarak Ali (), Parvez Akhter (), Mohd Radzi Hj. Mohd Toff () and Mansor Abdul Hamid ()
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Esah Hamzah: Department of Materials Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
Ali Ourdjini: Department of Materials Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
Mubarak Ali: Pakistan Council of Renewable Energy Technologies (PCRET), Plot No. 25, Sector H-9, Islamabad, Pakistan
Parvez Akhter: Pakistan Council of Renewable Energy Technologies (PCRET), Plot No. 25, Sector H-9, Islamabad, Pakistan
Mohd Radzi Hj. Mohd Toff: Advanced Materials Research Center (AMREC), SIRIM Berhad, Lot 34, Jalan Hi-Tech 2/3, Kulim Hi-Tech Park, 09000 Kulim, Kedah, Malaysia
Mansor Abdul Hamid: Advanced Materials Research Center (AMREC), SIRIM Berhad, Lot 34, Jalan Hi-Tech 2/3, Kulim Hi-Tech Park, 09000 Kulim, Kedah, Malaysia

Surface Review and Letters (SRL), 2007, vol. 14, issue 05, 1007-1013

Abstract: In the present study, the effect of variousN2gas flow rates on friction coefficient and surface roughness ofTiN-coated D2 tool steel was examined by a commercially available cathodic arc physical vapor deposition (CAPVD) technique. A Pin-on-Disc test was carried out to study the Coefficient of friction (COF) versus sliding distance. A surface roughness tester measured the surface roughness parameters. The minimum values for the COF and surface roughness were recorded at aN2gas flow rate of 200 sccm. The increase in the COF and surface roughness at aN2gas flow rate of 100 sccm was mainly attributed to an increase in both size and number of titanium particles, whereas the increase at 300 sccm was attributed to a larger number of growth defects generated during the coating process. These ideas make it possible to optimize the coating properties as a function ofN2gas flow rate for specific applications, e.g. cutting tools for automobiles, aircraft, and various mechanical parts.

Keywords: Coatings; TiN; cathodic arc; friction coefficient; surface roughness (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010408

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