Improvement of bioactivity of H2O2/TaCl5-treated titanium after subsequent heat treatments

Xiao Xiang Wang, Satoshi Hayakawa, Kanji Tsuru, Akiyoshi Osaka

Research output: Contribution to journalArticle

152 Citations (Scopus)

Abstract

Commercially pure titanium was treated with a H2O2/3 mM TaCl5 solution at 80°C for various periods and a titania gel layer was formed on the surface. This gel remained amorphous when heating for 1 h below 200°C and transformed to anatase after heating between 300°and 600°C. The anatase titania gel layers were found to be bioactive as to deposit carbonate ion- incorporated apatite within 1 day of immersion in the Kokubo solution, whereas the amorphous layers did not deposit apatite within 7 days. The apatite particles were found to nucleate preferentially inside the cracks prevailing in the thicker gel layers of 1-h chemically treated specimens. After immersing for 2 days, the titanium specimens were almost completely covered by apatite. Elimination of peroxide radicals from the titania gel and formation of anatase upon subsequent heating are considered to be responsible for the enhanced ability of apatite deposition. (C) 2000 John Wiley and Sons, Inc.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalJournal of Biomedical Materials Research
Volume52
Issue number1
DOIs
Publication statusPublished - Aug 1 2000

Fingerprint

Apatite
Apatites
Bioactivity
Titanium
Gels
Heat treatment
Titanium dioxide
Heating
Deposits
Peroxides
Carbonates
titanium dioxide
Cracks
Ions

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Biomedical Engineering

Cite this

Improvement of bioactivity of H2O2/TaCl5-treated titanium after subsequent heat treatments. / Wang, Xiao Xiang; Hayakawa, Satoshi; Tsuru, Kanji; Osaka, Akiyoshi.

In: Journal of Biomedical Materials Research, Vol. 52, No. 1, 01.08.2000, p. 171-176.

Research output: Contribution to journalArticle

Wang, Xiao Xiang ; Hayakawa, Satoshi ; Tsuru, Kanji ; Osaka, Akiyoshi. / Improvement of bioactivity of H2O2/TaCl5-treated titanium after subsequent heat treatments. In: Journal of Biomedical Materials Research. 2000 ; Vol. 52, No. 1. pp. 171-176.
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