Generation of bio-compatible titanium alloy surfaces by laser-induced wet treatment

Kazutoshi Katahira, Atsushi Ezura, Koki Ohkawa, Jun Komotori, Hitoshi Ohmori

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A laser-induced surface treatment in wet conditions was developed for improving the biocompatibility of titanium alloys. Disk-shaped titanium samples were soaked in a calcium nitrate solution and subsequently irradiated by a Yb fiber pulse laser beam, creating a modified surface layer containing calcium and oxygen elements. The modified layer exhibited optimal properties for treatment at a defocus distance of -1. mm and for a calcium nitrate concentration of 10%. The apatite-forming ability of the modified surface was affirmed in bioactivity tests performed in the simulated body fluid. It was shown that a Ca-rich layer was stably generated by the modified treatment process. The generated Ca-rich layer demonstrated superior biocompatibility, suggesting increased hydroxyapatite content.

Original languageEnglish
JournalCIRP Annals - Manufacturing Technology
Publication statusAccepted/In press - 2016


  • Bio-compatible surface
  • Laser
  • Titanium

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


Dive into the research topics of 'Generation of bio-compatible titanium alloy surfaces by laser-induced wet treatment'. Together they form a unique fingerprint.

Cite this