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Tribomechanical behavior of TiCN/TiAlN/WC-C multilayer film on cutting tool inserts for machining

  • Chinnasamy Moganapriya , Rathanasamy Rajasekar , Kannayiram Ponappa , Rangasamy Karthick , Ramamoorthy Venkatesh Perundurai , Palaniappan Sathish Kumar and Samir Kumar Pal
Published/Copyright: July 10, 2017
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Abstract

Condition of cutting tool determines the quality of machining operation performed on a material. Wear is the main phenomenon that deteriorates the tool life and indeed affects the quality of machined products. The research work deals with enhancing the wear resistance of tungsten carbide (WC) tool by mono- and multilayered film coating. The following WC-C/TiAlN/TiCN multilayered thin films were deposited on the surface of WC cutting tool insert using cathodic arc evaporation process. For comparison, monolayer TiAlN, TiCN and bilayer TiAlN/WC-C coatings were also prepared. Microhardness, surface roughness, wear behavior, frictional coefficient of uncoated and coated specimens were analyzed using Knoop & Vickers hardness tester, surface roughness tester, pin-on-disk wear tester, respectively. Multilayer coating comprising WC-C/TiAlN/TiCN exhibited lower friction coefficient, lower wear loss and higher hardness (25.83 GPa) compared to other thin film layered specimen and pure substrate (WC) owing to the presence of multilayer and hard layer. TiCN/TiAlN/WC-C multilayer coating exhibits lower coefficient of friction (COF) at a higher load (15 N) running for long distances (1900 m).

Kurzfassung

Der Zustand des Schneidwerkzeuges beeinflusst die Qualität der maschinellen Bearbeitung eines Werkstoffes. Verscheiß ist das Hauptphänomen, das die Lebensdauer eines Werkzeuges herabsetzt und tatsächlich die Qualität der bearbeiteten Produkte beeinflusst. Die diesem Beitrag zugrundeliegende Forschungsarbeit beschäftigt sich mit der Verbesserung des Verschleißwiderstandes eines Werkzeuges aus Wolframcarbid (WC) durch einfache und mehrfache Beschichtungen. Die WC-C/TiAlN/TiCN-Mehrfachschichten wurden auf die Oberfläche der WC-Schneidplatten mittels des kathodischen Lichtbogenverdampfungsprozesses aufgebracht. Zum Vergleich wurden außerdem einfache TiAlN- und TiCN-Schichten sowie zweifache TiAlN/WC-C-Schichten hergestellt. Die Mikrohärte, die Oberflächenrauheit, das Verschleißverhalten und der Reibkoeffizient wurden mittels eines Knoop & Vickers Härteprüfers, eines Oberflächenrauheitsmessgerätes sowie eines Stift-Scheibe-Verschleißprüfgerätes analysiert. Die Mehrfachschichten aus WC-C/TiAlN/TiCN zeigten im Vergleich zu den anderen Dünnschichtproben sowie dem reinen Substrat (WC) einen niedrigeren Reibkoeffizient, einen geringeren Verschleißverlust und eine höhere Härte (25.83 GPa), was auf den positiven Einfluss der harten Mehrfachschicht zurückzuführen ist. Die TiCN/TiAlN/WC-C-Mehrfachschicht zeigt einen niedrigeren Reibkoeffizient bei einer höheren Last (15 N) und über längere Distanzen (1900 m).


*Correspondence Address, Associate Prof. Dr. R. Rajasekar, Faculty of Mechanical Engineering, Kongu Engineering College, Perundurai, Erode, 638052 Tamil Nadu State, India, E-mail:

Assist. Prof. Chinnasamy Moganapriya, born 1988, completed her Bachelor of Mechatronics Engineering at Kongu Engineering College, Perundurai, Tamil Nadu, India in 2009. She obtained her Master's degree in Engineering Design at the same university in 2013. Since 2013, she has been working as Assistant Professor in the Department of Mechanical Engineering at Kongu Engineering College.

Assoc. Prof. Dr. Rathanasamy Rajasekar, born 1982, obtained his MSc and PhD degrees from the Indian Institute of Technology, Kharagpur, India in Materials Science in 2008 and 2011, respectively. He gained post-doctoral research experience from 2011 to 2012 in the Department of Polymer & Nano Engineering at Chonbuk National University, Jeonju, South Korea. Since 2012, he has been working as Associate Professor in the Department of Mechanical Engineering at Kongu Engineering College, Perundurai, Tamil Nadu, India.

Assoc. Prof. Dr. Kannayiram Ponappa, born 1979, obtained his MEng degree (Manufacturing) from Annamalai University, Madurai, India in 2005. He finished his PhD degree at Indian Institute of Technology, Delhi, India in Manufacturing in 2013. Since 2013, he is working as Associate Professor in the Department of Mechanical Engineering at Kongu Engineering College, Perundurai, Tamil Nadu, India.

Assist. Prof. Rangasamy Karthick, born 1993, finished his Bachelor's degree in Engineering (Mechanical stream) at Nehru Institute of Engineering and Technology, Coimbatore, Tamil Nadu, India in 2014. He did his Master of Engineering in Engineering Design at Kongu Engineering College, Perundurai, Tamil Nadu, India which he finished in 2016. He is currently working as Assistant Professor in the Department of Mechanical Engineering at Excel College of Engineering and Technology, Namakkal, India.

Assist. Prof. Ramamoorthy Venkatesh Perundurai, born 1992, finished his Bachelor of Engineering (Mechanical stream) at Nehru Institute of Engineering and Technology, Coimbatore, Tamil Nadu, India in 2014. He did his Master of Engineering in Engineering Design at Kongu Engineering College, Perundurai, Tamil Nadu, India, which he finished in 2016. He is currently working as Assistant Professor in the Department of Mechanical Engineering at Ramco Institute of Technology, India.

Palaniappan Sathish Kumar, born in 1991, finished his Bachelor's degree in Engineering (mechanical stream) at University College of Engineering Villupuram (A Constituent College of Anna University, Chennai), Tamil Nadu, India in 2012. He received his Master of Engineering from Kongu Engineering College, Tamil Nadu, India, which he finished in 2014 with distinction in the stream of CAD/CAM. Currently, he is pursuing a PhD in the Department of Mining Engineering, Indian Institute of Technology (IIT), Kharagpur, West Bengal, India.

Prof. Samir Kumar Pal completed his B.Tech, M.Tech and his PhD in the Department of Mining Engineering, Indian Institute of Technology, Kharagpur, West Bengal. Since 1981, he has been working as a member of the faculty in the Department of Mining Engineering, Indian Institute of Technology in Kharagpur, West Bengal.


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Published Online: 2017-07-10
Published in Print: 2017-07-14

© 2017, Carl Hanser Verlag, München

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