Characterization of the Apatite Formation on the Surfaces of Zirconia and Alumina Ceramics in Body Environments
Induction of an apatite-forming ability on a 100% Y2O3-ZrO2, 100% Al2O3, and 80/20 and 20/80 wt% of zirconia-alumina (Y2O3-ZrO2-Al2O3) composite polycrystals via chemical treatment with 5M H3PO4 have been investigated. The chemical treatments produced Zr-O surface functional groups, which are known to be effective for apatite nucleation in simulated body fluid. It’s believed that Al-OH surface functional groups are not effective for apatite nucleation. I this work was shown that apatite nucleates in substrate of alumina treat and untreated chemically. This implies that Al- OH functional groups are effective for apatite nucleation.
Lucio Salgado and Francisco Ambrozio Filho
A. A. Aguiar et al., "Characterization of the Apatite Formation on the Surfaces of Zirconia and Alumina Ceramics in Body Environments", Materials Science Forum, Vols. 591-593, pp. 697-702, 2008