Improvement of bio-compatibility of alumina ceramic by UV laser irradiation

Abstract

It is well known that alumina ceramics (Al₂O₃) is bio-inert material. We try to change this to bio-active material by laser irrdioation.
To improve a bio compatibility of alumina ceramics, it is necessary that there is Ca and P rich layer near surface of alumina ceramics. The alumina which has Ca-deposited layer or thin HAP layer was irraddiated with KrF laser light (248nm).
Depth profiles of Ca and P atoms were measured by Rutherford Backscattering Spectrometry (RBS) and Electron Spectroscopy for Chemical Analysis (ESCA).
The results indicate that Ca and P atoms are implanted into the alumina surface.