Study of hydroxyapatite/Al2O3 (anodic) biocomposite coating on titanium with a novel multi-step method

Li Ping He, Zhen Jun Wu, Zong Zhang Chen, Yiu Wing Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A novel hydroxyapatite/Al2O3 (anodic) biocomposite coating has been successfuly fabricated on titanium using a multi-step technique including physical vapor deposition (PVD), anodization, electrodeposition and hydrothermal treatment. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray diffraction (XRD) were employed to investigate morphologies and compositions of the pre- and post-hydrothermally treated hydroxyapatite/Al2O3 (anodic) biocomposite coatings. The results showed that plate-like Ca-deficient hydroxyapatite coating was directly elctrodeposited onto anodic Al2O3 at a constant current density of 2.0 mA/cm2 using NaH2PO4 as the phosphorous source. The plate-like Ca-deficient hydroxyapatite was converted into network-like Ca-rich hydroxyapatite after hydrothermal treatment.

Original languageEnglish
Pages (from-to)257-262
Number of pages6
JournalKey Engineering Materials
Volume312
DOIs
Publication statusPublished - 2006
Externally publishedYes

Keywords

  • Anodization
  • Biocomposite coating
  • Electrodeposition
  • Hydrothermal treatment
  • Hydroxyapatite

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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