Investigation of Biocompatibility Properties of Diamond-Like Carbon (DLC) Coating Deposited on Ti-6Al-4V by Low Voltage Electrodeposition Method
Subject Areas :Pouria Habibzadeh 1 * , Alireza Zakeri 2
1 - Master's degree, Faculty of Materials Engineering and Metallurgy, Iran University of Science and Technology, Tehran, Iran.
2 - Associate Professor, Faculty of Materials Engineering and Metallurgy, Iran University of Science and Technology, Tehran, Iran.
Keywords: Ti6Al4V Alloy Diamond-Like Carbon DLC Low Voltage Electrodeposition Biocompatibility Properties.,
Abstract :
In the present research, the effect of diamond-like carbon coating produced by the electrodeposition method at an applied potential of 16 volts was investigated to modify surface properties of Ti6Al4V alloy. The nature and structural characteristics of the coating obtained in the best operating conditions was examined with the help of Raman spectroscopy, with an ID/IG ratio of 1.92. FE-SEM analysis was used to investigate the microstructure of the coating cross-section and the surface morphology, from which a thickness of 1.74±0.17 µm was measured. Besides, the biocompatibility properties of the coating were investigated through antibacterial tests, cell viability assay (MTT), corrosion in simulated body fluid and biodegradability. The results obtained from the evaluation of biocompatibility properties indicate that the coating is non-toxic and the survival rate is 91.12±0.03% with a contact angle of 70.7±2.6 degrees. Also, according to the potentiodynamic polarization and impedance spectroscopy tests, the deposited coating can provide 24.40% resistance against the simulated corrosive environment of the body for the titanium alloy, which represents a promising coating for bio-medical applications.
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