Induction ability of CAA and anti-corrosion property of inductively formed apatite/Al2O3

Liping He, Zongzhang Chen, Yiu Wing Mai

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Ca-containing anodic alumina (CAA) has been successfully prepared by anodizing Al film in an alkali solution at a constant voltage and subsequently electro-depositing calcium salts on and into porous anodic alumina. This paper studied the induction ability of Ca-containing anodic alumina (CAA) for calcium phosphates salts by immersing CAA in a simulated body fluid (SBF). The morphologies and compositions of the inductive coating are studied in depth using SEM and XRD. The results show that the porous Ca-containing anodic alumina (CAA) exhibits good induction ability of calcium phosphates in SBF. The Ca/P atomic ratio of the inductive coating on CAA after 7 days immersion in SBF is of 1.68 and the inductive coating on CAA is apatite. Consequently apatite /Al 2O3 (anodic) composite has been obtained after apatite inductively formed on Ca-containing anodic alumina. Tafel polarization test indicates that apatite /Al2O3 composite has good anti-corrosion ability in simulated body environment. Therefore, Ca-containing anodic alumina films are promising substrates for fabricating functional coatings and its inductively formed apatite/Al2O3 composite is a promising material for hard tissue repair applications.

Original languageEnglish
Title of host publicationStructural Integrity and Failure
PublisherTrans Tech Publications
Pages75-79
Number of pages5
ISBN (Print)0878493867, 9780878493869
Publication statusPublished - 2008
Externally publishedYes
EventStructural Integrity and Failure - Perth, WA, Australia
Duration: 9 Jul 200811 Jul 2008

Publication series

NameAdvanced Materials Research
Volume41-42
ISSN (Print)1022-6680

Conference

ConferenceStructural Integrity and Failure
Country/TerritoryAustralia
CityPerth, WA
Period9/07/0811/07/08

Keywords

  • Anodization
  • Anti-corrosion ability
  • Ca-containing anodic alumina
  • Electro-deposition
  • Induction ability

ASJC Scopus subject areas

  • General Engineering

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