Hydroxyapatite coating on cobalt alloys using electrophoretic deposition method for bone implant application

International Conference on Physical Instrumentation and Advanced Materials

物理学;材料科学

Aminatun^1 ; Shovita, M.^1 ; Chintya, K.I.^1 ; Dyah, H.^1 ; Dwi, W.^2

Department of Physics, Faculty of Science and Technology, Airlangga University, Campus C Unair Surabaya, Mulyorejo

60115, Indonesia^1

Department of Biology, Faculty of Science and Technology, Airlangga University, Campus C Unair Surabaya, Mulyorejo

60115, Indonesia^2

关键词: Coating thickness;    Electrophoretic deposition methods;    Electrophoretic depositions;    Hydroxyapatite coating;    Optimum concentration;    Osteoblast cells;    Osteoconductive;    Strength values;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/853/1/012025/pdf
DOI  :  10.1088/1742-6596/853/1/012025

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Damage on bone due to osteoporosis and cancer triggered high demand for bone implant prosthesis which is a permanent implant. Thus, a prosthesis coated with hydroxyapatite (HA) is required because it is osteoconductive that can trigger the growth of osteoblast cells. The purpose of this study is to determine the optimum concentration of HA suspension in terms of the surface morphology, coating thickness, adhesion strength and corrosion rate resulting in the HA coating with the best characteristics for bone implant. Coating using electrophoretic deposition (EPD) method with concentrations of 0.02M, 0.04M, 0.06M, 0.08M, and 0.1M was performed on the voltage and time of 120V and 30 minutes respectively. The process was followed by sintering at the temperature of 900 °C for 10 minutes. The results showed that the concentration of HA suspension influences the thickness and the adhesion of layer of HA. The higher the concentration of HA-ethanol suspension the thicker the layer of HA, but its coating adhesion strength values became lower. The concentration of HA suspension of 0.04 M is the best concentration, with characteristics that meet the standards of the bone implant prosthesis. The characteristics are HA coating thickness of 199.93 ± 4.85 μm, the corrosion rate of 0.0018 mmpy and adhesion strength of 4.175 ± 0.716 MPa.