In the present investigation, Titanium Carbonitride (TiCN) coating was deposited on a cemented carbide substrate, by means of Plasma Enhanced Physical Vapour Deposition (PEPVD) process. The microstructure of the deposited film was characterized using the Scanning Electron Microscope (SEM). Highly dense, less porous and uniformly distributed TiCN coating was observed on the coated surface. X-Ray diffraction analysis was carried out to access the phases present in the coated layer. The scratch resistance and hardness were measured using the scratch tester and Nanoindenter, respectively. The TiCN coating gives higher hardness and superior scratch resistance when compared to the substrate. The surface morphology of the coated film was characterized using the Atomic Force Microscope (AFM) and was found that the surface roughness was lesser for TiCN coating when compared to cemented carbide substrate. The intensified TiCN coating on the substrate will be useful in improving the surface behavior of cemented carbide cutting tool.

Sampath Kumar T

Department of Manufacturing Engineering

School of Mechanical Engineering

Vellore Campus

Vinoth Jebaraj A

Department of Design and Automation

SIVAKUMAR K

TAMILOLI N.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

CHARACTERIZATION OF TiCN COATING SYNTHESIZED BY THE PLASMA ENHANCED PHYSICAL VAPOUR DEPOSITION PROCESS ON A CEMENTED CARBIDE TOOL

Surface Review and Letters

In the present work, attempt has been made to analyse the metallurgical and mechanical characterization of Titanium Carbonitride (TiCN) and Titanium Aluminium Nitride (TiAlN) duplex coatings. TiCN/TiAlN and TiAlN/TiCN bilayer combinations were deposited on cemented carbide cutting insert substrates by means of the cathodic arc physical vapour deposition (CAPVD) process. The metallography analysis revealed a highly densed uniform structure and a fewer voids for the TiAlN/TiCN bilayer coating when compared to TiCN/TiAlN combination. Nano-indentation analysis was performed for the assessment of the surface hardness of the coatings followed by the measurement of adhesive strength through use of a scratch tester. The TiAlN/TiCN bilayer coating revealed a higher hardness and greater adhesion strength than the TiCN/TiAlN bilayer coating. Roughness parameters of the coated films were obtained using atomic force microscopy (AFM). TiAlN/TiCN bilayer coating showed a smooth surface, when compared to TiCN/TiAlN bilayer coating. © 2019 Elsevier B.V.

Surfaces and Interfaces

Metallurgical and mechanical characterization of TiCN/TiAlN and TiAlN/TiCN bilayer nitride coatings

Monolayer and bilayer coatings of TiAlN, AlCrN, and AlCrN/TiAlN were deposited onto tungsten carbide inserts using the plasma enhanced physical vapor deposition process. The microstructures of the coatings were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The SEM micrographs revealed that the AlCrN and AlCrN/TiAlN coatings were uniform and highly dense and contained only a limited number of microvoids. The TiAlN coating was non-uniform and highly porous and contained more micro droplets. The hardness and scratch resistance of the specimens were measured using a nanoindentation tester and scratch tester, respectively. Different phases formed in the coatings were analyzed by X-ray diffraction (XRD). The AlCrN/TiAlN coating exhibited a higher hardness (32.75 GPa), a higher Young’s modulus (561.97 GPa), and superior scratch resistance (LCN = 46 N) compared to conventional coatings such as TiAlN, AlCrN, and TiN. © 2014, University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.

International Journal of Minerals, Metallurgy, and Materials

Comparison of TiAlN, AlCrN, and AlCrN/TiAlN coatings for cutting-tool applications

Surface and Coatings Technology

Nanostructure reactive plasma sprayed TiCN coating

Journal of Physics and Chemistry of Solids

Tribological development of TiCN coatings by adjusting the flowing rate of reactive gases

Rare Metal Materials and Engineering

SEM-EDS Plane Scan and Line Scan Analysis of TiCN Coatings by Cathodic Arc Ion Plating

Ceramics International

Effect of thickness on the structure, composition and properties of titanium nitride nano-coatings

Journal	Surface Review and Letters
Publisher	World Scientific Pub Co Pte Lt
ISSN	0218-625X
Open Access	0