Veeravazhuthi Veeraraghavan (2023) Effect of Target Power on Microstructure, Tribological Performance and Biocompatibility of Magnetron Sputtered Amorphous Carbon Coatings. Effect of Target Power on Microstructure, Tribological Performance and Biocompatibility of Magnetron Sputtered Amorphous Carbon Coatings, 16 (17).
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Effect of Target Power on Microstructure, Tribological Performance and Biocompatibility of Magnetron Sputtered Amorphous Carbon Coatings.pdf - Published Version
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Abstract
The tribological properties and preosteoblast behavior of an RF magnetron-sputtered
amorphous carbon coating on a Si (100) substrate were evaluated. The graphite target power wasvaried from 200 to 500 W to obtain various coating structures. The amorphous nature of the coatings
wasconfirmedviaRamananalysis. Thecontactanglealsoincreasedfrom58ºto103º, whichconfirmed
the transformation of the a-C surface from a hydrophilic to hydrophobic nature with an increasing
graphite target power. A minimum wear rate of about 4.73 10 8 mm3/N*mm was obtained for an
a-C coating deposited at a 300 W target power. The 300 W and 400 W target power coatings possessed
good tribological properties, and the 500 W coating possessed better cell viability and adhesion
on the substrate. The results suggest that the microstructure, wettability, tribological behavior and
biocompatibility of the a-C coating were highly dependent on the target power of the graphite. A
Finite Element Analysis (FEA) showed a considerable increase in the Von Mises stress as the mesh
size decreased. Considering both the cell viability and tribological properties, the 400 W target power
coating was identified to have the best tribological property as well as biocompatibility.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | amorphous carbon; tribological property; preosteoblasts; wettability; friction simulation; microstructure |
| Divisions: | PSG College of Arts and Science > Department of Physics |
| Depositing User: | Dr. B Sivakumar |
| Date Deposited: | 14 Nov 2025 09:08 |
| Last Modified: | 14 Nov 2025 09:08 |
| URI: | https://ir.psgcas.ac.in/id/eprint/2531 |
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