Akademik Veri Yönetim Sistemi
JOHNSON MATTHEY TECHNOLOGY REVIEW, cilt.69, sa.1, 2025 (SCI-Expanded, Scopus)
This study aims to coat Ti6Al4V alloy with Ti-xHA (x = 2.5-10 wt%) mixture to improve its surface properties. A new approach using a powder metallurgical pressure-assisted sintering method was applied to the coating process. The in situ sintering and coating process was performed at 950 degrees C for 45 min in a vacuum atmosphere of 10-4 mbar. A pressure of 50 MPa was applied during the sintering process. Staphylococcus aureus (ATCC (R) 29213TM) and Escherichia coli (ATCC (R) 25922TM) cultures were used to determine the antibacterial activity of the sintered and coated samples. The electrochemical properties of the samples were studied by Tafel extrapolation and potentiodynamic polarisation tests. The results showed that the coating layer containing 7.5 wt% of hydroxyapatite (HA) increased the antibacterial property against gram-positive and gram-negative bacterial cultures. Furthermore, it was determined that theicorr value of the material decreased and the corrosion resistance improved with an increasing HA ratio. In addition, no active-passive oxidation zone formation was observed up to 2000 mV in the HA-added samples.