The Evaluation of Hydroxyapatite (HA) Coated and Uncoated Porous Tantalum for Biomedical Material Applications

2014 International Conference on Science & Engineering in Mathematics, Chemistry and Physics

数学;化学;物理学

Safuan, Nadia^1,2 ; Sukmana, Irza^1,2,3 ; Kadir, Mohammed Rafiq Abdul^1,2 ; Noviana, Deni^4

IJN-UTM Cardiovascular Engineering Centre (CEC), Taman University, Johor Bahru, 81310, Malaysia^1

MEDITEG (Medical Devices and Technolgy) Research Group, Faculty of Biosciences and Medical Engineering UTM, 81310 UTM Skudai Johor, Malaysia^2

Department of Mechanical Engineering, University of Lampung, Jalan Prof. Soemantri Brojonegoro 1, Bandar Lampung 35143, Indonesia^3

Divison of Surgery and Radiology, Department of Veterinary Clinic, Reproduction and Pathology, Bogor Agricultural University (IPB), Bogor, 16610, Indonesia^4

关键词: Biomedical material;    Coating characteristics;    Confocal Raman microscopy;    Corrosion current densities;    Field emission scanning electron microscopy;    Hydroxyapatite coating;    Potentiodynamic polarization tests;    Simulated body fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/495/1/012023/pdf
DOI  :  10.1088/1742-6596/495/1/012023

来源: IOP

【 摘 要 】

Porous tantalum has been used as an orthopedic implant for bone defects as it has a good corrosion resistance and fatigue behaviour properties. However, there are some reports on the rejection of porous Ta after the implantation. Those clinical cases refer to the less bioactivity of metallic-based materials. This study aims to evaluate hydroxyapatite coated and uncoated porous Tantalum in order to improve the biocompatibility of porous tantalum implant and osseointegration. Porous tantalum was used as metallic-base substrate and hydroxyapatite coating has been done using plasma-spraying technique. Scanning Electron Microscopy (SEM) and Field Emission Scanning Electron Microscopy (FESEM) techniques were utilizes to investigate the coating characteristics while Confocal Raman Microscopy to investigate the interface and image. The effect of coating to the corrosion behaviour was assessed by employing potentiodynamic polarization tests in simulated body fluid at 37±1 °C. Based on SEM and FESEM results, the morphologies as well the weight element consists in the uncoated and hydroxyapatite coated porous tantalum were revealed. The results indicated that the decrease in corrosion current density for HA coated porous Ta compared to the uncoated porous Ta. This study concluded that by coating porous tantalum with HA supports to decrease the corrosion rate of pure porous.