The wettability characteristics of DLC coating for tribological engineering applications

Sulaiman, Mohd Hafis and R.N., Farahana and L, Tajul and H, Jaafar (2019) The wettability characteristics of DLC coating for tribological engineering applications. In: 6th International Conference on Applications and Design in Mechanical Engineering 2019, ICADME 2019, 26-27 August 2019, Penang.

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Abstract

Hard coating deposited to tool steel surface can greatly improve wear resistance and reduce sticking. Since solid-liquid interactions are present in every lubricated tribological contact, the present study is aimed to understand the physical phenomena of contact interactions between the DLC coated surface and the liquid. In this study, double-layer DLC/TiAlN coating was prepared via Physical Vapour Deposition (PVD) process. The anti-sticking properties were assessed using contact angle measurements using two liquids with distinctly different viscosity – water and oil. No significant differences found in the contact angle values for both liquid properties. The results revealed that the DLC/TiAlN coated tool steel surfaces exhibit hydrophobic behaviour with high contact angle values. With a lower surface energy of the DLC/TiAlN coating in comparison to uncoated surface, this suggests that the DLC/TiAlN coating is a good hard coating candidate since it has a lower adhesion resistance and an improved release performance.

Item Type:	Conference or Workshop Item (Invited Papers)
Additional Information:	9398/85653
Subjects:	T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Dr Mohd Hafis Sulaiman
Date Deposited:	02 Dec 2020 08:38
Last Modified:	02 Dec 2020 08:39
URI:	http://irep.iium.edu.my/id/eprint/85653

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