Abstract
We attempted to fabricate a composite coating comprising bioactive calcium and sodium titanates on titanium (Ti) using a calcium hydroxide (Ca(OH)2) slurry containing sodium ions (Na+). The coating procedure was as follows: a Ti substrate was buried in the slurry, which was prepared by mixing Ca(OH)2 powder with NaOH and/or NaCl solution, and the slurry was then heated at 923K in air. This procedure resulted in the formation of a composite coating comprising CaTiO3 and Na4Ti5O12 with a thickness of ca. 430nm on the substrate. When the composite coating was soaked in a simulated body fluid, calcium phosphate precipitated on the surface more rapidly than on a monolayer of CaTiO3. It is likely that dissolved Na+ from the coating promoted the formation of the calcium phosphate.
Original language | English |
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Pages (from-to) | 3785-3790 |
Number of pages | 6 |
Journal | Surface and Coatings Technology |
Volume | 205 |
Issue number | 13-14 |
DOIs | |
Publication status | Published - 2011 Mar 25 |
Keywords
- Bioactivity
- Calcium phosphate
- Chemical treatment
- Surface modification
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry