Friction and wear behaviour of HVOF sprayed Cr2O3-TiO2 coatings on aluminium alloy
- Title
- Friction and wear behaviour of HVOF sprayed Cr2O3-TiO2 coatings on aluminium alloy
- Creator
- Kumar G.S.P.; Keshavamurthy R.; Akhil M.P.; Kiran K.; Thomas M.J.; Tambrallimath V.; Hebbar G.S.
- Description
- This study investigates the tribological behaviour of Cr2O3-TiO2 composite coatings deposited on aluminium 6061 alloy. Cr2O3-TiO2 composite coatings were deposited by high velocity oxyfuel (HVOF) technique. Developed coatings were subjected to microstructure studies, microhardness test (ASTM E92), friction and wear test (ASTM G99). Pin-on-disc machine was used to evaluate friction and wear characteristics of Cr2O3-TiO2 coatings. Effect of sliding velocity (0.314 m/s-1.26 m/s) and load (20 N-100 N) on friction and wear characteristics of Cr2O3-TiO2 coatings were studied and compared with uncoated aluminium alloy. Results showed 54% improvement in hardness of Cr2O3-TiO2 coatings in comparison with aluminium alloy. Coefficient of friction and wear rate decreases by 12% and 48% respectively when evaluated with uncoated aluminium alloy. Coefficient of friction (COF) and wear rate increases with increase in load and sliding velocity for both coatings and substrate. However, Cr2O3-TiO2 coatings showed lower wear rate and COF at all the loads and sliding velocities studied when compared with uncoated aluminium alloy. Worn out surfaces of uncoated and Cr2O3-TiO2 coated surfaces were subjected to SEM analysis to understand the wear mechanisms in composite coatings. 2021 Inderscience Enterprises Ltd.. All rights reserved.
- Source
- International Journal of Materials Engineering Innovation, Vol-12, No. 1, pp. 1-17.
- Date
- 2021-01-01
- Publisher
- Inderscience Publishers
- Subject
- Al6061 alloy; Cr2O3; Friction; Hardness; HVOF coatings; TiO2; Wear
- Coverage
- Kumar G.S.P., Department of Mechanical and Automobile Engineering, Christ (Deemed to Be University), Bangalore, India; Keshavamurthy R., Department of Mechanical Engineering, Dayananda Sagar College of Engineering, Bangalore, India; Akhil M.P., Department of Mechanical and Automobile Engineering, Christ (Deemed to Be University), Bangalore, India; Kiran K., Department of Mechanical and Automobile Engineering, Christ (Deemed to Be University), Bangalore, India; Thomas M.J., Department of Mechanical and Automobile Engineering, Christ (Deemed to Be University), Bangalore, India; Tambrallimath V., Department of Automobile Engineering, Dayananda Sagar College of Engineering, Bangalore, India; Hebbar G.S., Department of Mechanical and Automobile Engineering, Christ (Deemed to Be University), Bangalore, India
- Rights
- Restricted Access
- Relation
- ISSN: 17572754
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Kumar G.S.P.; Keshavamurthy R.; Akhil M.P.; Kiran K.; Thomas M.J.; Tambrallimath V.; Hebbar G.S., “Friction and wear behaviour of HVOF sprayed Cr2O3-TiO2 coatings on aluminium alloy,” CHRIST (Deemed To Be University) Institutional Repository, accessed November 4, 2025, https://archives.christuniversity.in/items/show/16085.