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Zn–HA–TiO 2 nanocomposite coatings electrodeposited on a NiTi shape memory alloy
Author(s) -
Mirak Mohammad,
Alizadeh Morteza,
Salahinejad Erfan,
Amini Rasool
Publication year - 2015
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5678
Subject(s) - materials science , nanocomposite , nickel titanium , zinc , scanning electron microscope , coating , alloy , nanoparticle , plating (geology) , shape memory alloy , transmission electron microscopy , metallurgy , high resolution transmission electron microscopy , indentation hardness , chemical engineering , composite number , composite material , microstructure , nanotechnology , geophysics , geology , engineering
In this work, zinc–hydroxyapatite (Zn–HA) and zinc–hydroxyapatite–titania (Zn–HA–TiO 2 ) nanocomposite coatings were electrodeposited onto a NiTi shape memory alloy, using a chloride zinc plating bath. The structure of the composite coatings was characterized by X‐ray diffraction, scanning electron microscopy and high‐resolution transmission electron microscopy. According to the results, the Zn–HA–TiO 2 coating exhibited a plate‐like surface morphology, where the addition of the nanoparticles caused to an increase in roughness. It was also found that due to applying a proper stirring procedure during co‐deposition, a homogenous dispersion of the nanoparticles in the coatings was achieved. Also, the addition of the TiO 2 nanoparticles to the Zn–HA–TiO 2 coating enhanced the microhardness and wear resistance. Copyright © 2014 John Wiley & Sons, Ltd.