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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1126
Title: Sol–Gel Derived Hydroxyapatite Coating on Mg-3Zn Alloy for Orthopedic Application
Authors: Singh S.
Manoj Kumar R.
Kuntal K.K.
Gupta P.
Das S.
Jayaganthan R.
Roy P.
Lahiri D.
Published in: JOM
Abstract: In recent years, magnesium and its alloys have gained a lot of interest as orthopedic implant constituents because their biodegradability and mechanical properties are closer to that of human bone. However, one major concern with Mg in orthopedics is its high corrosion rate that results in the reduction of mechanical integrity before healing the bone tissue. The current study evaluates the sol–gel–derived hydroxyapatite (HA) coating on a selected Mg alloy (Mg-3Zn) for decreasing the corrosion rate and increasing the bioactivity of the Mg surface. The mechanical integrity of the coating is established as a function of the surface roughness of the substrate and the sintering temperature of the coating. Coating on a substrate roughness of 15–20 nm and sintering at 400°C shows the mechanical properties in similar range of bone, thus making it suitable to avoid the stress-shielding effect. The hydroxyapatite coating on the Mg alloy surface also increases corrosion resistance very significantly by 40 times. Bone cells are also found proliferating better in the HA-coated surface. All these benefits together establish the candidature of sol–gel HA-coated Mg-3Zn alloy in orthopedic application. © 2015, The Minerals, Metals & Materials Society.
Citation: JOM (2015), 67(4): 702-712
URI: https://doi.org/10.1007/s11837-015-1364-1
http://repository.iitr.ac.in/handle/123456789/1126
Issue Date: 2015
Publisher: Minerals, Metals and Materials Society
ISSN: 10474838
Author Scopus IDs: 57209810002
56556778200
56556952900
57206494195
57211601977
6602183770
35509207200
26326345700
Author Affiliations: Singh, S., Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Manoj Kumar, R., Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Kuntal, K.K., Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Gupta, P., Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Das, S., Molecular Endocrinology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Jayaganthan, R., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Roy, P., Molecular Endocrinology Lab, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Lahiri, D., Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India, Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Corresponding Author: Lahiri, D.; Biomaterials and Multiscale Mechanics Laboratory, Indian Institute of Technology RoorkeeIndia
Appears in Collections:Journal Publications [BT]

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