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Synthesis, characterization, and bioactivity of SrTiO3-incorporated titanium coating

Published online by Cambridge University Press:  08 May 2018

Souvik Sahoo ,
Arijit Sinha ,
Vamsi Krishna Balla Open the ORCID record for Vamsi Krishna Balla [Opens in a new window]  and
Mitun Das
Souvik Sahoo
Affiliation:
Bioceramics and Coating Division, CSIR-Central Glass & Ceramic Research Institute, Kolkata-700032, India; and Dr. M.N. Dastur School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah-711103, India
Arijit Sinha
Affiliation:
Dr. M.N. Dastur School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah-711103, India
Vamsi Krishna Balla
Affiliation:
Bioceramics and Coating Division, CSIR-Central Glass & Ceramic Research Institute, Kolkata-700032, India
Mitun Das*
Affiliation:
Bioceramics and Coating Division, CSIR-Central Glass & Ceramic Research Institute, Kolkata-700032, India
*
a)Address all correspondence to this author. e-mail: mitun@cgcri.res.in
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Abstract

Surface modification by the bioactive material is a potential way to overcome the poor osseoconductivity of titanium (Ti)-based implants. A continuous wave laser source was used to deposit strontium titanate (SrTiO3)-reinforced Ti coating on the Ti substrate using the laser engineered net shaping (LENS™) process. The maximum of 10 wt% SrTiO3 could be incorporated into Ti using laser without cracking of the deposit. This study investigated the constituent phases, microstructure, compositional analysis, wettability, and electrochemical behavior of the composite coatings. XRD and EDX analyses confirmed the presence of the SrTiO3 phase in the coatings. The composite coatings also exhibited superior mechanical properties, corrosion resistance, and bioactivity compared to that of commercially pure Ti. In vitro ion release study confirmed the sustain release of Sr2+ from the composite coatings. In summary, the excellent mechanical bonding with the substrate and high in vitro bioactivity make these SrTiO3-incorporated composite coatings as a potential material to enhance osseoconductivity of Ti-based orthopedic implants.

Keywords

coatingbiomaterialSr
Type
Invited Article
Information
Journal of Materials Research , Volume 33 , Issue 14: Focus Issue: 3D Printing of Biomaterials , 27 July 2018 , pp. 2087 - 2095
Copyright
Copyright © Materials Research Society 2018 

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