Surface Modification of Alumina/ Zirconia Ceramics Upon Different Fluoride-Based Treatments.

The aim of this study was to prepare and to characterize the structure of Al₂ O₃-3 YSZ composites with 5% Ti O₂ addition as well as the surface modification upon treatments with Sn F₂ and Na BF₄, respectively. SEM micrographs showed the controlled densification of the composites as an effect of 3 YSZ and Ti O₂ addition to alumina matrix. By FTIR and XRD, the characteristics of Al- O and Zr- O vibrations, respectively, the diffractions lines related to α-corundum and zirconia in tetragonal phase were discussed. Qualitative and quantitative results obtained by XPS and ATR FTIR demonstrated that the proposed materials are more sensitive to Sn F₂ than to Na BF₄ treatment. [ABSTRACT FROM AUTHOR]