Investigation of Microstructure and Mechanical Properties of AlTiCrN, AlCrN Coatings Deposited By Advance Sputtering Technique

DOI

10.2991/iccasp-16.2017.49How to use a DOI?

Keywords

HIPMS, UBMS, Microstructure, AlTiCrN, AlCrN

Abstract

Developments in PVD coating technique for cutting tools enable high speed and dry machining with superior cutting parameters in commercial manufacturing sectors. The present research work investigate the microstructure and the mechanical properties of the AlTiCrN, AlCrN coatings deposited by High Impulse Pulsed Magnetron Sputtering (HIPMS) and Unbalanced Magnetron Sputtering (UBMS) technique respectively onto fine-grained tungsten carbide (K-10) substrate. The surfaces' morphology and microstructure of the AlTiCrN, AlCrN coatings were observed on the scanning electron microscopy. The thin film structure was tested using X-ray diffraction method. The micro-hardness tests were performed and found to be 36.2 and 32 GPa respectively for each coating. Tests of the coatings' adhesion to the substrate material were made using the scratch tester and critical load observed to be 117 N and 88 N for AlTiCrN and AlCrN coating respectively. These mechanical properties are crosschecked by machining performance by evaluating tool life. It is found that the structure of the PVD coatings consisted of fine crystallites, while their average size fitted within the range of 11-25 nm, depending on the coating type. The coatings demonstrated columnar structure and dense cross-section morphology as well as good adhesion to the substrate. The very good mechanical properties of the composite coatings make them suitable in industrial applications. The results will provide useful information with respect to the application of composite coatings for the improvement of mechanical properties for dry machining of stainless steel –difficult to machine material.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Atul Kulkarni
AU  - Girish Joshi
AU  - Nilesh Patil
AU  - Vikas Sargade
PY  - 2016/12
DA  - 2016/12
TI  - Investigation of Microstructure and Mechanical Properties of AlTiCrN, AlCrN Coatings Deposited By Advance Sputtering Technique
BT  - Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)
PB  - Atlantis Press
SP  - 311
EP  - 315
SN  - 1951-6851
UR  - https://doi.org/10.2991/iccasp-16.2017.49
DO  - 10.2991/iccasp-16.2017.49
ID  - Kulkarni2016/12
ER  -