H.L. Allasi, P. Kumaradhas, M. Sivapragash, S.C. Vettivel

Study on wear behaviour characteristics of ZrO2 and ZrN coated AZ91D Mg alloy

J. Min. Metall. Sect. B-Metall., 59 (2) (2023) 279-286. DOI:10.2298/JMMB230323024A
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Available online 17 August 2023
(Received 23 March 2023; Accepted 17 August 2023)


The as-received AZ91D Mg alloy was coated with ZrO2 and ZrN ceramics using the Physical Vapour Deposition (PVD) process. Dry sliding wear investigations were performed in a pin-on-disc wear tester at a sliding velocity of 2-8 m/s and a normal load of 2-10 N. The wear mechanisms such as abrasion, delamination, thermal softening, and oxidation were observed. The results showed that PVD coating increased the wear resistance of AZ91D Mg alloy. The worn surface was examined with Scanning Electron Microscope (SEM).

Keywords: AZ91D Mg alloy; PVD coating; Dry sliding wear

Correspondence Address:
A.H. Lenin,
WOLLO University, Kombolcha Institute of Technology, Department of Mechanical Engineering, Kombolcha, Ethiopia;
email: drahlenin@kiot.edu.et

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