Synergetic Surface Behavior of Sol–Gel ZrO2–Nb2O5 Coated 316L Stainless Steel for Biomedical Applications

The porous outer layer and compact inner layer of zirconium/niobium mixed oxide coatings were deposited on medical grade 316L stainless steel by sol gel dip-coating method. The obtained coatings were homogeneous and polyphased crystalline in nature. The Scanning Transmission Electron Microscopy anal...

Full description

Saved in:
Bibliographic Details
Published in:Journal of bio- and tribo-corrosion 2020, Vol.6 (4), Article 108
Main Authors: Meganathan, Prathiba, Selvaraj, Lakshmi Manokari, Peter, Leema Sophie, Venkatachalam, Sabarinathan, Srinivasan, Nagarajan
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Biomaterials
Biomedical materials
Body fluids
Chemistry and Materials Science
Coatings
Corrosion
Corrosion and Coatings
Corrosion potential
Corrosion prevention
Corrosion resistance
Corrosion resistant steels
Dip coatings
Electron micrographs
Field emission
Immersion coating
In vitro methods and tests
Materials Science
Micrography
Niobium oxides
Oxide coatings
Pores
Protective coatings
Scanning transmission electron microscopy
Sol-gel processes
Solid Mechanics
Stainless steel
Substrates
Transmission electron microscopy
Tribology
Zirconium
Zirconium dioxide
Zirconium oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The porous outer layer and compact inner layer of zirconium/niobium mixed oxide coatings were deposited on medical grade 316L stainless steel by sol gel dip-coating method. The obtained coatings were homogeneous and polyphased crystalline in nature. The Scanning Transmission Electron Microscopy analysis revealed that the distribution of zirconium and niobium were uniform over the coated film. The Field Emission Scanning Electron Micrographs exhibited fine pores on the outer surface of the mixed oxide coating. Further, these pores were not directly connected to the 316L stainless steel substrate, which was evinced by the Scanning Electron Micrograph cross-sectional analysis. The corrosion performance of zirconium/niobium mixed oxide coated 316L stainless steel was evaluated by electrochemical techniques in simulated body fluid solution. The zirconium /niobium mixed oxide coating exhibited an enhanced corrosion resistance for 316L stainless steel as indicted by the reduced current density and enhanced corrosion potential toward the noble direction. The formation of synergetic and stable zirconium/niobium mixed oxide coating was proposed to account for enhanced corrosion protection and bioactive behavior for the long-term implant applications. Graphic Abstract
ISSN:2198-4220
2198-4239
DOI:10.1007/s40735-020-00408-0