Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10672947 | CIRP Annals - Manufacturing Technology | 2016 | 4 Pages |
Abstract
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 â1Â 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.
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Authors
Kazutoshi Katahira, Atsushi Ezura, Koki Ohkawa, Jun Komotori, Hitoshi Ohmori,