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TiO2 Rutile phase formed interlayers by sintering mono phasic bioceramics for Biomedical applications

Abstract

The formation of rutile TiO2 phase in nanoHydroxyapatite(nanoHAP) coated titanium metal (nanHAP- TiO2-Ti) is reported. This work is mainly emphasized in order to enhance the corrosion protection performance, osseointegration and biocompatibility. The optimized potential of nanoHAP coated titanium using electrophoretic deposition (EPD) was found to be 80 V and 3 minutes. The coated samples were sintered in air at various sintering temperatures from 600 to 900C for 1 hour. The crystallinity, vibrational states, surface morphology and surface topography were characterized by XRD, Raman, FESEM with EDAX and AFM studies respectively. In the present work, investigations on the corrosion behavior of sintered sample in Ringer’s solution by means of electrochemical studies using Open Circuit Potential (OCP), Electrochemical Impedance spectroscopic(EIS) and anodic polarization studies were carried out. The electrochemical studies exhibited an enhanced corrosion resistant behaviour towards nanoHAP coated titanium sintered at 800ºC with complete rutile TiO2 phase formation. The in vitro cytotoxicity studies of the coated materials were carried out by MTT assay and cell attachment with osteoblast cells. These studies revealed an enhanced cell attachment and proliferation on the composite layer compared to uncoated metal, which controlled the release of metal ions into the biological system. Keywords: nanHAP- TiO2-Ti, EPD, Sintering, EIS, Biocompatibility.

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Publication details

The article was received on 06 Mar 2019, accepted on 14 Apr 2019 and first published on 15 Apr 2019


Article type: Paper
DOI: 10.1039/C9NJ01182J
Citation: New J. Chem., 2019, Accepted Manuscript

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    TiO2 Rutile phase formed interlayers by sintering mono phasic bioceramics for Biomedical applications

    V. S.P. and T. M. Sridhar, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ01182J

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