Naslov
Porous zirconium titanate ceramics synthesized by sol-gel process

Autori
Macan, Jelena ; Gajović, Andreja ; Ivanković, Hrvoje

Izvornik
Journal of the European Ceramic Society (0955-2219) 29 (2009), 4; 691-696

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
sol-gel processes ; sintering ; porosity ; zirconium titanate

Sažetak
Zirconium titanate, ZrTiO4, was synthesized by sol-gel method from zirconium butoxide and titanium isopropoxide. Amorphous ZrTiO4 powder was ground, calcined at 500 °C, and milled to homogenise size distribution of the powder. Milled powder was pressed into tablets and sintered at 900-1400 °C for 8 hours. Differential scanning calorimetry and dilatometric studies indicated crystallization of ZrTiO4 at 600-700 °C. Raman spectroscopy and X-ray diffraction analysis confirmed presence of crystallized ZrTiO4 already at 900 °C, and crystallite size was determined by Scherrer equation. Scanning electron microscopy showed that ZrTiO4 grains begin to sinter at higher temperatures, starting from 1200 °C, while preserving high porosity up to 1300 °C as confirmed by dilatometry and mercury intrusion porosimetry.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemijsko inženjerstvo, Temeljne tehničke znanosti

POVEZANOST RADA