Melly Cahyani, Ihwanul Aziz, Mona Sari, Mega Andini, Musyafa Riziq Habiburrohman, Yusril Yusuf
Hydroxyapatite (HA) derived from catsh bone was successfully coated onto Ti-6Al-4V alloy using the Plasma Electrolytic Oxidation (PEO) method. The coating process was carried out in a strong alkaline electrolyte solution with treatment durations of 10, 20, and 30 minutes (Ti/HA-10, Ti/HA-20, and Ti/HA-30). The coated Ti-6Al-4V samples were characterized using X-ray Di൵raction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and compressive strength testing. Ti/HA-10 sample exhibited the highest crystallinity, while Ti/HA-10 and Ti/HA-20 showed more homogeneous pore structures with porosity exceeding 60% and thicker oxide layers than Ti/HA-30. The study found that the 30-minute duration was less e൵ective due to the increased electrical resistance of the oxide layer, which hindered HA deposition eciency and reduced coating thickness. While compressive strengths were below 200 MPa and Young’s modulus values (2.6–3.6 GPa) were lower than typical cortical bone, these properties are benecial for reducing the stress-shielding e൵ect. These ndings suggest the potential of HA-coated Ti-6Al-4V for biomedical use. © 2026, Hanyang University. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Science, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia; Research Center of Accelerator Technology, Research Organization of Nuclear Energy, National Research and Innovation Agency (BRIN), Yogyakarta, Indonesia; Department of Physics Education, Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia; Center of Excellence for Carbonate Apatite-based Extracellular Matrix and Adjuvant, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia
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