%0 Journal Article
%T Synthesis and Characterization of Alumina-Zirconia Powders Obtained by Sol-Gel Method: Effect of Solvent and Water Addition Rate
%A Julio Del Angel
%A Alberto F. Aguilera
%A Ignacio R. Galindo
%A Merced Mart¨ªnez
%A Tomas Viveros
%J Materials Sciences and Applications
%P 650-657
%@ 2153-1188
%D 2012
%I Scientific Research Publishing
%R 10.4236/msa.2012.39095
%X The influence of solvent and the rate of addition of water on the characteristics of alumina-zirconia powders obtained by sol-gel method were investigated. The Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub> powders (1:1 molar ratio) were prepared using aluminum tri-sec-butoxide and zirconium n-propoxide as precursors. Ethanol (EtOH), isopropanol (iPrOH) and isobutanol (iBuOH) were used as solvents. The Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub> powders were characterized by nitrogen physisorption (S<sub>BET</sub>), Fourier transformed infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Prepared oxides calcined at 700¡æ showed high specific surface area (200 - 240 m2/g). Obtained results suggest that the homogeneity of the mixed oxides is favored by using a water addition rate of 0.06 and 0.10 mL/min with ethanol as solvent.
%K Alumina-Zirconia
%K Mixed Oxides
%K Sol Gel Method
%K Effect of Solvent
%K Water Addition Rate
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=22924