Precipitation control of calcium phosphate on pure magnesium by anodization

Sachiko Hiromoto, Tamao Shishido, Akiko Yamamoto, Norio Maruyama, Hidetoshi Somekawa, Toshiji Mukai

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)

Abstract

Calcium phosphate precipitated on pure magnesium from artificial plasma (modified Hanks' solution) was varied by anodization and autoclaving, aiming the control of corrosion rate of bioabsorbable magnesium. Rough and smooth anodized film was formed depending on anodizing voltage in 1 N NaOH. The amount of calcium phosphate precipitated on the porous film was 2-3 times larger than that on the smooth film. The Ca/P ratio on the porous film was slightly higher than that on the smooth film. The autoclaving did not significantly influence the morphology of anodized film; however, the precipitation of calcium phosphate was restricted. No significant local corrosion occurred after the immersion in modified Hanks' solution. It is demonstrated that the precipitation of calcium phosphate on magnesium can be controlled by anodization and autoclaving.

Original languageEnglish
Pages (from-to)2906-2913
Number of pages8
JournalCorrosion Science
Volume50
Issue number10
DOIs
Publication statusPublished - 2008 Oct
Externally publishedYes

Keywords

  • A. Bioabsorbable magnesium
  • B. Calcium phosphate
  • C. Anodization
  • D. Autoclaving
  • E. Corrosion

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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