Chinese Journal of Applied Chemistry

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Preparation and Bioactivity for Inducing Bone Growth of Hydroxyapatite/Fe2O3 Composite Coating

LI Longzhu, HUANG Ziyang*, LIN Yan, CAO Mei, LIN Jianqun   

  1. (College of Chemistry and Chemical Engineering,Fujian Normal University,Fuzhou 350007,China)
  • Received:2012-12-03 Revised:2013-02-19 Published:2013-10-10 Online:2013-10-10
  • Contact: HUANG Ziyang

Abstract: Electrophoretic deposition(EPD) has been exploited for the preparation of hydroxyapatite/chitosan/ferric oxide(HA/CS/Fe2O3) composite coating, which was then sintered at 700 ℃ for 2 h to yield HA/Fe2O3 composite coating. The surface morphology, phase composition, corrosion resistance and adhesion between the composite coating and substrate were characterized by SEM, EDS and XRD, FT-IR, electrochemical instrument and Lloyd LR5K Plus Testing Instrument, respectively. The bioactivity for inducing bone growth of the HA/Fe2O3 composite coating was evaluated in 1.5 times of ionic concentration of simulated body fluid(1.5SBF). When the mass ratio of HA∶CS∶Fe2O3 in the suspension was 100∶100∶1, the resultant HA/Fe2O3 composite coating had rough surface and strong adhesion up to 27.5 MPa with substrate and showed high corrosion resistance in 1.5SBF and excellent bioactivity for inducing bone growth in 1.5SBF.

Key words: hydroxyapatite/Fe2O3 composite coating, electrophoretic deposition, bioactivity

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