Staff View: Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co

Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co

Elevated temperature experienced in the cutting zone is the main issue contributing to severe wear and responsible in reducing the lifespan of cutting tools'. This study aims to improve the performance of the cutting tool by applying AlCrN coating on the WC-Co substrate using physical vapor dep...

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Main Authors:	Chua, Ling Ling, Mat Yajid, Muhammad Azizi, Tamin, Mohd. Nasir, Kamarudin, Maslinda, Azhar Taib, Mustapha Ali, Nosbi, Norlin, Wan Ali, Wan Fahmin Faiz
Format:	Article
Published:	Elsevier B.V. 2022
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/104176/ http://dx.doi.org/10.1016/j.surfcoat.2022.128304
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spelling	my.utm.1041762024-01-18T00:17:36Z http://eprints.utm.my/104176/ Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co Chua, Ling Ling Mat Yajid, Muhammad Azizi Tamin, Mohd. Nasir Kamarudin, Maslinda Azhar Taib, Mustapha Ali Nosbi, Norlin Wan Ali, Wan Fahmin Faiz TJ Mechanical engineering and machinery Elevated temperature experienced in the cutting zone is the main issue contributing to severe wear and responsible in reducing the lifespan of cutting tools'. This study aims to improve the performance of the cutting tool by applying AlCrN coating on the WC-Co substrate using physical vapor deposition (PVD). Prior to the coating process, the WC-Co surface was chemically roughened by Murakami's solution, followed by Caro's solution for 10s. The etched substrates were coated with AlCrN at various PVD deposition temperatures. The scanning electron microscopy (SEM) showed the coating thickness increased from 1.24 μm to 2.78 μm. X-ray diffraction (XRD) pattern confirmed that both AlN and CrN phases dominated the coating layer indicated the presence of AlCrN coating. These XRD peaks were broader, indicating a smaller grain size (11.5 nm) produced at higher deposition temperatures. Apart from that, a minute amount of the Cr2N phase is also detected. The average compressive residual stresses ranged from −5.409 GPa to −1.707 GPa attributed to increased coating thickness associated with Cr2N+N2 → CrN phase transformation. There are no cracking and coating delamination observed at this state. The mechanical properties of the coated structure were further evaluated via Vickers microhardness and linear reciprocating tests. The hardness obtained ranged from 600 to 1617 HV0.2. While the coefficient of friction (CoF) measured was 0.21 after 240 m of sliding distance. The calculated wear rate was 2.283×10−4 mm3/N·m which exhibited a significant reduction in wear when coated at 450 °C compared to 4.550×10−4 mm3/N·m at a lower temperature (250 °C). Therefore, it can be concluded that the effect of roughened substrate and various PVD deposition temperatures have significantly influenced the coating phase formation, which subsequently effects the hardness and wear performance of AlCrN-coated tungsten carbide. Elsevier B.V. 2022-04-25 Article PeerReviewed Chua, Ling Ling and Mat Yajid, Muhammad Azizi and Tamin, Mohd. Nasir and Kamarudin, Maslinda and Azhar Taib, Mustapha Ali and Nosbi, Norlin and Wan Ali, Wan Fahmin Faiz (2022) Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co. Surface and Coatings Technology, 436 (NA). pp. 1-9. ISSN 0257-8972 http://dx.doi.org/10.1016/j.surfcoat.2022.128304 DOI:10.1016/j.surfcoat.2022.128304
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Chua, Ling Ling Mat Yajid, Muhammad Azizi Tamin, Mohd. Nasir Kamarudin, Maslinda Azhar Taib, Mustapha Ali Nosbi, Norlin Wan Ali, Wan Fahmin Faiz Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
description	Elevated temperature experienced in the cutting zone is the main issue contributing to severe wear and responsible in reducing the lifespan of cutting tools'. This study aims to improve the performance of the cutting tool by applying AlCrN coating on the WC-Co substrate using physical vapor deposition (PVD). Prior to the coating process, the WC-Co surface was chemically roughened by Murakami's solution, followed by Caro's solution for 10s. The etched substrates were coated with AlCrN at various PVD deposition temperatures. The scanning electron microscopy (SEM) showed the coating thickness increased from 1.24 μm to 2.78 μm. X-ray diffraction (XRD) pattern confirmed that both AlN and CrN phases dominated the coating layer indicated the presence of AlCrN coating. These XRD peaks were broader, indicating a smaller grain size (11.5 nm) produced at higher deposition temperatures. Apart from that, a minute amount of the Cr2N phase is also detected. The average compressive residual stresses ranged from −5.409 GPa to −1.707 GPa attributed to increased coating thickness associated with Cr2N+N2 → CrN phase transformation. There are no cracking and coating delamination observed at this state. The mechanical properties of the coated structure were further evaluated via Vickers microhardness and linear reciprocating tests. The hardness obtained ranged from 600 to 1617 HV0.2. While the coefficient of friction (CoF) measured was 0.21 after 240 m of sliding distance. The calculated wear rate was 2.283×10−4 mm3/N·m which exhibited a significant reduction in wear when coated at 450 °C compared to 4.550×10−4 mm3/N·m at a lower temperature (250 °C). Therefore, it can be concluded that the effect of roughened substrate and various PVD deposition temperatures have significantly influenced the coating phase formation, which subsequently effects the hardness and wear performance of AlCrN-coated tungsten carbide.
format	Article
author	Chua, Ling Ling Mat Yajid, Muhammad Azizi Tamin, Mohd. Nasir Kamarudin, Maslinda Azhar Taib, Mustapha Ali Nosbi, Norlin Wan Ali, Wan Fahmin Faiz
author_facet	Chua, Ling Ling Mat Yajid, Muhammad Azizi Tamin, Mohd. Nasir Kamarudin, Maslinda Azhar Taib, Mustapha Ali Nosbi, Norlin Wan Ali, Wan Fahmin Faiz
author_sort	Chua, Ling Ling
title	Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
title_short	Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
title_full	Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
title_fullStr	Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
title_full_unstemmed	Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co
title_sort	effect of substrate roughness and pvd deposition temperatures on hardness and wear performance of alcrn-coated wc-co
publisher	Elsevier B.V.
publishDate	2022
url	http://eprints.utm.my/104176/ http://dx.doi.org/10.1016/j.surfcoat.2022.128304
_version_	1789424389925634048
score	13.211869

Effect of substrate roughness and PVD deposition temperatures on hardness and wear performance of AlCrN-coated WC-Co

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