Effect of sol-gel processing parameters on structure of zirconia
AUTOR(ES)
Silva, D. G. da
FONTE
Cerâmica
DATA DE PUBLICAÇÃO
2019-01
RESUMO
Abstract The present study reports the experimental results regarding the effect of molar ratio of hydrolysis water used in the sol-gel synthesis upon the structure of zirconia. The ZrO2 materials were synthesized via simple metal-chelate route using zirconium n-propoxide [Zr(OCH2CH2CH3)4], n-propanol, acetic acid, and deionized water. Thermogravimetric analysis and infrared spectroscopy were performed to evaluate the structural evolution upon samples heating; the complete removal of organic compounds at 330 °C was verified. The results of X-ray diffraction showed that the calcination temperature of 400 °C was enough to the crystallization of the metastable tetragonal zirconia phase. Nitrogen adsorption-desorption measurements indicated that the textural properties of zirconia were affected by the water content used in the synthesis, and the highest surface area was achieved when the water molar ratio of 4 was used.
Documentos Relacionados
- Processamento sol-gel de pós bioativos vítreos e cristalinos
- Estrutura e propriedades de nanopartículas preparadas via sol-gel
- Antimony (V) Oxide Adsorbed on a Silica-Zirconia Mixed Oxide Obtained by the Sol-Gel Processing Method: Preparation and Acid Properties
- Characterization of sol-gel thin films by ellipsometry.
- Analysis of bioactive glasses obtained by sol-gel processing for radioactive implants