Universiti Teknologi Malaysia Institutional Repository

Effect of Coating Thickness on the Properties of TiN Coatings Deposited on Tool Steels using Cathodic ARC PVD Techique

Mubarak, A. and Akhter, Parvez and Hamzah, Esah and Mohd. Toff, Mohd. Radzi and A. Qazi, Ishtiaq (2008) Effect of Coating Thickness on the Properties of TiN Coatings Deposited on Tool Steels using Cathodic ARC PVD Techique. Surface Review and Letters, 15 (4). pp. 401-410. ISSN 0218-625X

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1142/S0218625X08011524


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 study concentrated on cathodic arc physical vapor deposition (CAPVD), a technique used for the deposition of hard coatings for tooling applications, and which has many advantages. The main drawback of this technique, however, is the formation of macrodroplets (MDs) during deposition, resulting in films with rougher morphology. Various standard characterization techniques and equipment, such as electron microscopy, atomic force microscopy, hardness testing machine, scratch tester, and pin-on-disc machine, were used to analyze and quantify the following properties and parameters: surface morphology, thickness, hardness, adhesion, and coefficient of friction (COF) of the deposited coatings. Surface morphology revealed that the MDs produced during the etching stage, protruded through the TiN film, resulting in filmwith deteriorated surface features. Both coating thickness and indentation loads influenced the hardness of the deposited coatings. The coatings deposited on HSS exhibit better adhesion compared to those on D2 tool steel. Standard deviation indicates that the coating deposited with thickness around 6.7 μm showed the most stable trend of COF versus sliding distance.

Item Type:Article
Uncontrolled Keywords:Morphology, surface roughness, coefficient of friction, hardness, adhesion
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:6762
Deposited By: Mohamad Ali Duki
Deposited On:06 Nov 2008 08:32
Last Modified:08 Jan 2014 04:46

Repository Staff Only: item control page