Characteristics and Machining Performance of TiN and TiAlN Coatings on a Milling Cutter

Sarwar, Mohammed and Haider, Julfikar (2011) Characteristics and Machining Performance of TiN and TiAlN Coatings on a Milling Cutter. AIP conference proceedings, 1315. pp. 1005-1010. ISSN 0094-243X

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Titanium Nitride (TiN) coating deposited by Physical Vapour Deposition (PVD) or Chemical Vapour Deposition (CVD) techniques on cutting tools (single point or multipoint) has contributed towards the improvement of tool life, productivity and product quality [1]. Addition of Al in TiN coating (e.g., TiAlN or AlTiN) has further improved the coating properties required for machining applications [2, 3]. This work presents a comparative investigation on TiN and TiAlN coatings deposited on to a Powder Metallurgy High Speed Steel (PM HSS) milling cutter used for machining bimetal (M42+D6A) steel strips. PVD (Arc evaporation) technique was used to deposit the coatings after carefully preparing the cutting edges of the milling cutter. Microstructure, chemical composition, hardness and adhesion of the coatings have been characterised using different techniques. The incorporation of Al into TiN coating results in an improvement in hardness, wear resistance and cutting performance. Examination of the worn flank in the coated cutting edges revealed that abrasive and adhesive wear are the predominant failure mechanisms. Tool designers, coating suppliers and manufacturing engineers could benefit from the information provided.

Item Type: Article
Additional Information: International Conference on Advances in Materials and Processing Technologies (AMPT2010), Paris, France, 24–27 October 2010.
Uncontrolled Keywords: chemical vapour deposition, coatings, X-ray diffraction
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Sarah Howells
Date Deposited: 17 Sep 2012 14:25
Last Modified: 12 Oct 2019 19:07

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