Titanium oxide and titanates based on Ba, Sr, and Ca were prepared from commercial solutions of TiClaand HNO3. The main preparation steps for the sols consisted of elimination of chloride anions by distillation with nitric acid and addition of metal hydroxides for the titanates. Resulting sols were gelled and used to (1) prepare irregularly shaped powders by evaporation; (2) produce by a dipping technique thin films on glass, Ag, or Ti substrates; and (3) produce spherical powders (diameters <100 μm) by solvent extraction. Results of thermal and X-ray-diffraction analyses indicated that the temperatures required to form the various compounds were lower than those necessary to form the compounds by conventional solid-state reactions and comparable to those required with use of organometallic based sol-gel methods. Temperatures of formation could be further reduced by addition of ascorbic acid to the sols. © 2006 Materials Research Society.
|Publication status||Published - 2005|
|Event||2005 MRS Fall Meeting - , United States|
Duration: 1 Jan 2005 → …
|Conference||2005 MRS Fall Meeting|
|Period||1/1/05 → …|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Deptuła, A., Goretta, K. C., Olczak, T., Lada, W., Chmielewski, A. G., Jakubaszek, U., ... Contini, V. (2005). Preparation of titanium oxide and metal titanates as powders, thin films, and microspheres by novel inorganic sol-gel process. Paper presented at 2005 MRS Fall Meeting, United States.