Study on wear behaviour characteristics of ZrO2 and ZrN coated AZ91D Mg alloyH. Allasi, P. Kumaradhas, M. Sivapragash, S. Vettivel
- Materials Chemistry
- Metals and Alloys
- Mechanics of Materials
- Geotechnical Engineering and Engineering Geology
The as received AZ91D Mg alloy was coated by ZrO2 and ZrN ceramic using Physical Vapour Deposition (PVD) process. The dry sliding wear studies were carried out in a pin-on-disc wear tester at a sliding speed of 2-8 m/s and in normal loads of 2- 10 N. The wear mechanism such as abrasive, delamination, thermal softening and oxidation were observed. The results showed that the PVD coating increased the wear resistance of the AZ91D Mg alloy. The worn out surface were examined by using Scanning Electron Microscope (SEM).