We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
TiO<sub>2</sub> 与SiO<sub>2</sub> 掺杂对Al<sub>2</sub> O<sub>3</sub> 相转变的研究.
- Authors
林聪毅; 孙小曼; 李 蔚
- Abstract
TiO2, SiO2 and TiO2 + SiO2 doped Al2O3 powders were prepared by ball milling. After calcination at different temperatures, X-ray diffraction (XRD) tests were carried out, and the effects of these three kinds of doping on the phase transition temperature of Al2O3 powder were compared. The results show that TiO2 and SiO2 doping promote the phase transition from γ-Al2O3 to α-Al2O3 effectively. In the case of doping mass fraction of 0. 5%, temperatures of γ-Al2O3 to α-Al2O3 are reduced by 100 ℃ and 125 ℃ respectively. The effect of TiO2 + SiO2 co-doping on the phase transition of Al2O3 is better than that of TiO2 and SiO2 alone. The doping of 0. 3% (mass fraction) TiO2 and 0. 3% (mass fraction) SiO2 reduces the temperature of γ-Al2O3 to α-Al2O3 by 150 ℃. In addition, the mechanism of TiO2, SiO2 and TiO2 + SiO2 doping to promote the phase transformation of Al2O3 powder was analyzed.
- Publication
Bulletin of the Chinese Ceramic Society, 2021, Vol 40, Issue 2, p587
- ISSN
1001-1625
- Publication type
Article