摘要
通过冷冻干燥方法制备了ZrO_2-Al_2O_3,ZrO_2-Fe_2O_3二元及ZrO_2·(Al_2O_3,Fe_2O_3)三元体系的前驱物粉末,研究了不同温度下的相变及微观组织结构,证明Fe_2O_3具有球化晶粒的作用,并获得了具有均匀细小显微组织的三元体系.
Precursor powders of Zr02-Al2O3, ZrO2-Fe2O3 and Zr02-(Al2O3, Fe2O3) systems were produced by frozen-drying. Their phases transformation and microstructure were developed at deferent temperatures and sintering durations. Microstructure with fine grains was obtained in the ZrO2-(Al2O3, Fe2O3) system for the composition (ZrO2:Al2O3:Fe2O3=60:32:8 mol%) sintered at 1400℃ for 15h. The results obtained show that Fe2O3 has the effect of glomeration of grains in ZrO2 base ceramic materials.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期373-378,共6页
Journal of Inorganic Materials
基金
国家自然科学基金(59872044)
关键词
冷冻干燥
相变
晶粒度
复相陶瓷
ZRO2
frozen-drying
phases transformation
grains degree
multiphase ceramic
ZrO2
