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Effect of hydrothermal treatment temperature on the hydroxyapatite coatings deposited by electrochemical method
- Source :
- Surface and Coatings Technology. 406:126656
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Hydroxyapatite coatings on titanium alloy prepared via electrochemical method show low crystallinity and form cracks that affect implant performance. In this study, the hydrothermal treatment was applied in order to improve the properties of the hydroxyapatite coating. Ti6Al4V substrates were coated with hydroxyapatite via the electrochemical method. The samples were then hydrothermally treated under different temperatures. The effects of hydrothermal treatment temperatures on the hydroxyapatite coating composition, microstructure, crystallinity, as well as on the bonding strength between coatings and substrates, were investigated. The samples' bioactivity was measured by immersing them in a simulated body fluid. Results showed that the hydrothermal treatment healed the cracks of the hydroxyapatite coating deposited by electrochemical method. The coatings became denser with increasing hydrothermal teatment temperatures. The hydrothermal treatment temperatures had negligible effects on hydroxyapatite coating composition. At 180 °C, the hydroxyapatite coating achieved maximum crystallinity, and their bonding strength was about 23 MPa. Bioactivity experiments revealed that the hydroxyapatite coatings obtained via the electrochemical method and the hydrothermal treatment had good bioactivity.
- Subjects :
- Materials science
Simulated body fluid
Titanium alloy
Hydrothermal treatment
02 engineering and technology
Surfaces and Interfaces
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrochemistry
Microstructure
01 natural sciences
Hydrothermal circulation
0104 chemical sciences
Surfaces, Coatings and Films
Crystallinity
Chemical engineering
Materials Chemistry
Hydroxyapatite coating
0210 nano-technology
Subjects
Details
- ISSN :
- 02578972
- Volume :
- 406
- Database :
- OpenAIRE
- Journal :
- Surface and Coatings Technology
- Accession number :
- edsair.doi...........2553af0370b66c0f0fcde64ccf6e44f9