Back to Search
Start Over
Effect of acid passivation and H 2 sputtering pretreatments on the adhesive strength of sol–gel derived Hydroxyapatite coating on titanium surface
- Source :
- International Journal of Hydrogen Energy. 42:20420-20429
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- WOS: 000409151000003 In this study, in order to increase the adhesive strength of a Hydroxyapatite (HA) coating, deposited on the surface of commercially pure titanium, acid passivation and hydrogen sputtering pretreatments were used. The pure titanium surfaces were passivized by acid solution and treated by hydrogen sputtering, at a temperature of 300 degrees C for 1 h. Ca(NO3)(2)center dot 4H(2)0 and NH4H2PO4 were chosen as starting precursors for Ca and P sources. HA coatings on the titanium surface were deposited using the sol gel method and sintered in air at the temperatures of 750 degrees C-900 degrees C for 1 h. XRD, SEM, EDS and AFM analysis techniques were used for structural and morphological characterization. Scratch test was performed for determining the adhesion of HA coatings. The experimental results indicated that compact and crack free HA coating, which has a Ca/P ratio of 1:6, was formed on pure Titanium (Ti) surface. The adhesive strength values of the HA coating, pretreated with H-2 sputtering and acid passivation were found to be 72.84 MPa and 55.83 MPa at temperature of 900 degrees C, respectively. It was observed that H-2 plasma sputtering pretreatment, improved the adhesive strength of the HA coatings compared to pretreatment with acid passivation. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
- Subjects :
- Materials science
Passivation
Hydrogen
Energy Engineering and Power Technology
chemistry.chemical_element
Hydroxyapatite coating
Sol-gel
Adhesion strength
Hydrogen sputtering
Acid passivation
02 engineering and technology
Sol–gel
engineering.material
010402 general chemistry
01 natural sciences
Coating
Sputtering
Renewable Energy, Sustainability and the Environment
Metallurgy
Adhesion
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Fuel Technology
chemistry
Chemical engineering
engineering
Titanium surface
0210 nano-technology
Titanium
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi.dedup.....f30e17d37bdc5c3200a63b25f0a9db19