Fabrication of composite coating comprising bioactive calcium and sodium titanates on titanium using calcium hydroxide slurry containing sodium ions

Naofumi Ohtsu; Satoshi Semboshi; Chikage Abe; Susumu Tokuda

doi:10.1016/j.surfcoat.2011.01.035

Fabrication of composite coating comprising bioactive calcium and sodium titanates on titanium using calcium hydroxide slurry containing sodium ions

Naofumi Ohtsu, Satoshi Semboshi, Chikage Abe, Susumu Tokuda

Cooperative Research and Development Center for Advanced Materials

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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
Pages (from-to)	3785-3790
Number of pages	6
Journal	Surface and Coatings Technology
Volume	205
Issue number	13-14
DOIs	https://doi.org/10.1016/j.surfcoat.2011.01.035
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

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title = "Fabrication of composite coating comprising bioactive calcium and sodium titanates on titanium using calcium hydroxide slurry containing sodium ions",

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.",

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AU - Ohtsu, Naofumi

AU - Semboshi, Satoshi

AU - Abe, Chikage

AU - Tokuda, Susumu

PY - 2011/3/25

Y1 - 2011/3/25

N2 - 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.

AB - 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.

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KW - Calcium phosphate

KW - Chemical treatment

KW - Surface modification

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