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Citation: XIAO Xiu-Feng, LIU Rong-Fang, ZUO You-Song, LIN Lan-Yun, XU Dao-Xuan. Preparation of HA/TiO₂ Composite Coatings Through Electrodeposition[J]. Chinese Journal of Applied Chemistry, ;2004, 21(7): 687-691. shu

Preparation of HA/TiO₂ Composite Coatings Through Electrodeposition

1.
College of Chemistry and Materials Sicence, Fujian Normal University, Fuzhou 350007

Corresponding author: LIU Rong-Fang,
Received Date: 20 August 2003
Available Online: 13 February 2004
Fund Project: 福建省自然科学基金重大项目(2000F003,E0210018)资助 (2000F003,E0210018)

Hydroxyapatite/titania (HA/TiO₂) composite coatings were obtained via electrodeposition.The influence of process technology on the content of TiO₂ in the coating and the influence of the content of TiO₂ in the coating on the bonding strength of the coating were investigated.The results revealed that the content of TiO₂ in the coating increased with reduction of the current density and prolonging of the deposition time and increase in the concentration of TiO₂ in the electrolyte,but increased first and decreased afterwards with increase in the electrolyte concentration.Calcination could improve the bonding strength up to 18.7 MPa,when the mass fraction of TiO₂ in the coating was 72.2%.The composite coatings have a fairly good chemical stability,erosive endurance and dissolvation resistibility.HA in the composite coatings is partly decomposed to β-Ca₃(PO₄)₂ and CaO when the calcination temperature in preparation above 800℃.
- electrodeposition,
- hydroxyapatite,
- titania,
- bonding strength
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Preparation of HA/TiO₂ Composite Coatings Through Electrodeposition