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Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy

This study highlights the scratch adhesion failure characterization and tribo-mechanical properties of physical vapor deposited (Cr, Ti) N coating on AA7075-T6 by using magnetron-sputtering technique. The surface morphology, microstructure and chemical composition of CrTi/CrTiN film were inspected b...

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Main Authors: Quazi, Moinuddin Mohammed, Ishak, Mahadzir, Arslan, Ahmed, Bashir, Muhammad Nasir, Ali, Imran
Format: Article
Published: Taylor & Francis 2018
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/21001/
https://doi.org/10.1080/01694243.2017.1373988
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spelling my.um.eprints.210012019-04-18T05:12:54Z http://eprints.um.edu.my/21001/ Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy Quazi, Moinuddin Mohammed Ishak, Mahadzir Arslan, Ahmed Bashir, Muhammad Nasir Ali, Imran TJ Mechanical engineering and machinery This study highlights the scratch adhesion failure characterization and tribo-mechanical properties of physical vapor deposited (Cr, Ti) N coating on AA7075-T6 by using magnetron-sputtering technique. The surface morphology, microstructure and chemical composition of CrTi/CrTiN film were inspected by an optical microscope, scanning electron microscope (SEM) incorporated with energy dispersive X-ray spectroscopy (EDX) in addition to focused ion beam milling. The coating to substrate critical load of about 1261 mN was obtained, by employing coating deposition parameters of; DC power (300 W, RF power (200 W)), temperature (300 °C) and nitrogen flow rate (6%). Failure adhesion characteristics exhibited initial arc-tensile cracking followed by chipping and spallation that led to complete coating failure at Lc3. The tribo-mechanical aspects were evaluated by a pin-on-plate reciprocating testing unit, which showed a lower friction coefficient of 0.36 for CrTiN as compared with 0.43 for AA7075-T6. Subsequently, the wear depth was also reduced from 9.5 to 5.9 μm. It was revealed that the wear mechanism for AA7075-T6 was extensive deformation, abrasion and delamination, while the CrTiN exhibited slightly oxidative abrasive wear mode. Taylor & Francis 2018 Article PeerReviewed Quazi, Moinuddin Mohammed and Ishak, Mahadzir and Arslan, Ahmed and Bashir, Muhammad Nasir and Ali, Imran (2018) Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy. Journal of Adhesion Science and Technology, 32 (6). pp. 625-641. ISSN 0169-4243 https://doi.org/10.1080/01694243.2017.1373988 doi:10.1080/01694243.2017.1373988
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Quazi, Moinuddin Mohammed
Ishak, Mahadzir
Arslan, Ahmed
Bashir, Muhammad Nasir
Ali, Imran
Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
description This study highlights the scratch adhesion failure characterization and tribo-mechanical properties of physical vapor deposited (Cr, Ti) N coating on AA7075-T6 by using magnetron-sputtering technique. The surface morphology, microstructure and chemical composition of CrTi/CrTiN film were inspected by an optical microscope, scanning electron microscope (SEM) incorporated with energy dispersive X-ray spectroscopy (EDX) in addition to focused ion beam milling. The coating to substrate critical load of about 1261 mN was obtained, by employing coating deposition parameters of; DC power (300 W, RF power (200 W)), temperature (300 °C) and nitrogen flow rate (6%). Failure adhesion characteristics exhibited initial arc-tensile cracking followed by chipping and spallation that led to complete coating failure at Lc3. The tribo-mechanical aspects were evaluated by a pin-on-plate reciprocating testing unit, which showed a lower friction coefficient of 0.36 for CrTiN as compared with 0.43 for AA7075-T6. Subsequently, the wear depth was also reduced from 9.5 to 5.9 μm. It was revealed that the wear mechanism for AA7075-T6 was extensive deformation, abrasion and delamination, while the CrTiN exhibited slightly oxidative abrasive wear mode.
format Article
author Quazi, Moinuddin Mohammed
Ishak, Mahadzir
Arslan, Ahmed
Bashir, Muhammad Nasir
Ali, Imran
author_facet Quazi, Moinuddin Mohammed
Ishak, Mahadzir
Arslan, Ahmed
Bashir, Muhammad Nasir
Ali, Imran
author_sort Quazi, Moinuddin Mohammed
title Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
title_short Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
title_full Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
title_fullStr Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
title_full_unstemmed Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy
title_sort scratch adhesion and wear failure characteristics of pvd multilayer crti/crtin thin film ceramic coating deposited on aa7075-t6 aerospace alloy
publisher Taylor & Francis
publishDate 2018
url http://eprints.um.edu.my/21001/
https://doi.org/10.1080/01694243.2017.1373988
_version_ 1643691437776175104
score 13.211869

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