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Vida Khalili

Vida Khalili

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: Faculty of Interdisciplinary Sciences and Technologies
Address:
Phone: 04137745000-1601

Research

Title
Characterisation of HA–Si composite coatings on NiTi for biomedical applications
Type
JournalPaper
Keywords
Composite, Coating, Hydroxyapatite, Electrophoretic, Deposition, Reactive, Bonding
Year
2014
Journal SURFACE ENGINEERING
DOI
Researchers Vida Khalili ، Jafar Khalil-Allafi ، Hossein Maleki-Ghaleh

Abstract

This study concerns with coating of hydroxyapatite–silicon composite on NiTi using a combination of electrophoretic deposition and reactive bonding. Hydroxyapatite and silicon were ball milled to join before electrophoretic deposition. The characterisation of samples was performed by scanning electron microscope (SEM) and X-ray diffraction analyses. Also Fourier transform infrared spectroscopy was used to determine the functional groups. Results show that ball milling yields homogeneous codeposition of hydroxyapatite and silicon particles. SEM images of the composite reveal a uniform and dense coating, because of the presence of silicon as a reactive bonding agent, as well as formation of SiO2, CaSiO3 and Ca3SiO5 during sintering.