Synthesis of Platelet Alumina Powders

Yan Yuan Liang; Da Ming Chen; Jian Feng Tong

doi:10.4028/www.scientific.net/AMR.412.69

Paper Titles

Fabrication of Porous Structured SnO₂/In₂O₃ Composite by Solid-Phase Reactive Sintering
p.53

Preparation of ZrO₂ Spherical Nanoparticles Used for Photonic Crystal
p.57

Synthesis and Characterization of 3Y-TZP by Gel Solid-State Method
p.61

Preparation and Characterization of Porous Acicular Mullite Ceramics
p.65

Synthesis of Platelet Alumina Powders
p.69

Low-Temperature Combustion Synthesis of Cordierite Powder and its Characteristic
p.73

Synthesis of SrTiO₃ Powders by Gel Solid State Reaction Method
p.78

Preparation and Characterization of Monodispersed BaTiO₃ Nanocrystals Using One-Step Solvothermal Method
p.82

Barium Zirconium Titanate Powders Prepared by Sol–Gel Method
p.86

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 412Synthesis of Platelet Alumina Powders

Synthesis of Platelet Alumina Powders

Abstract:

Platelet alumina powders have been synthesized by introducing AlF₃ as crystalline transformation additive. The influence of the additive contents on the phase transformation of the start material Al (OH)₃ was studied by SEM, the effect of calcination temperatures on the phase transformation and microstructure of alumina powder were investigated by TG-DSC, XRD and SEM. The results indicate that uniform platelet powders could be abtained while more than 15% AlF₃was introduced. When the calcination temperature higher than 1100°C pure α-Al₂O₃ could be synthesized, comparing to the tranditional preparation of platelet alumina powders, the remarkable advantages of the method are low calsination temperature, small particle size and simple process.