Dhandapani, Vishnu Shankar Subbiah, Ramesh Thangavel, Elangovan Kim, Chang-Lae Kang, Kyoung-Mo Veeraraghavan, Veeravazhuthi Park, Kwideok Kim, Dae-Eun Park, Dongkyou Kim, Byungki 2024-01-19T08:34:03Z 2024-01-19T08:34:03Z 2023-09-27 2023-09 1996-1944 https://pubs.kist.re.kr/handle/201004/113306 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 was varied from 200 to 500 W to obtain various coating structures. The amorphous nature of the coatings was confirmed via Raman analysis. The contact angle also increased from 58o to 103o, which confirmed 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 x 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. English MDPI Open Access Publishing Effect of Target Power on Microstructure, Tribological Performance and Biocompatibility of Magnetron Sputtered Amorphous Carbon Coatings Article 10.3390/ma16175788 1 Materials, v.16, no.17 Materials 16 17 Y scie scopus 001061144200001 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Chemistry Materials Science Metallurgy & Metallurgical Engineering Physics Article DIAMOND-LIKE CARBON MECHANICAL-PROPERTIES CORROSION-RESISTANCE SURFACE-ROUGHNESS ULTRA-THIN IN-VITRO FILMS COMPOSITES FRICTION WEAR amorphous carbon tribological property preosteoblasts wettability friction simulation microstructure