Effects of Hydrogen Peroxide Concentration and Heat Treatment on the Mechanical Characteristics and Corrosion Resistance of Hydroxyapatite Coatings

Improving the functionality of coatings, especially in biomedical applications, has been the major concern of the research community in recent years. For the same purpose, hydroxyapatite (HaP) coatings were synthesized, in this work, by applying the pulsed electrodeposition process by varying the am...

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Published inJournal of materials engineering and performance Vol. 33; no. 5; pp. 2104 - 2115
Main Authors Dhiflaoui, Hafedh, Dabaki, Youssef, Zayani, Wissem, Debbich, Hayet, Faure, Joël, Larbi, Ahmed Ben Cheikh, Benhayoune, Hicham
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2024
Springer Verlag/ASM International
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Physics
Quality Control
Reliability
Safety and Risk
Technical Article
Tribology
hydroxyapatite
nanoindentation
electrodeposition
EIS
hydrogen peroxide
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Summary:Improving the functionality of coatings, especially in biomedical applications, has been the major concern of the research community in recent years. For the same purpose, hydroxyapatite (HaP) coatings were synthesized, in this work, by applying the pulsed electrodeposition process by varying the amount of hydrogen peroxide (H 2 O 2 ) into electrolyte put on Ti6Al4V substrate. The effect of hydrogen peroxide concentration H 2 O 2 and the heat treatment on the surface morphology and the phase composition were investigated using scanning electron microscopy as well as x-ray microanalysis (SEM-EDXS) and x-ray diffraction (XRD). Mechanical properties at the nanoscale were determined by nanoindentation. The corrosion resistance of HaP/Ti6Al4V systems was examined using the two tests (potentio-dynamic polarization and Electrochemical Impedance Spectroscopy (EIS)) in Ringer solution to simulate the human body environment. The obtained results showed that the HaP coating with 9% of H 2 O 2 and after heat treatment is made of two phases stoichiometric hydroxyapatite (HaP) and β -tricalcium phosphate ( β -TCP) with a compact and homogeneous microstructure. In this condition, the hardness and Young's modulus were equal to 72,2 MPa and 30,45 GPa, respectively. Highest corrosion resistance was obtained from HaP coating with het treated 9% H 2 O 2 ( E corr  =  − 0.189 V and I corr 1.12 µA cm −2 ). Graphical Abstract
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-023-08132-9