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冷冻干燥合成ZrO2-(Al2O3,Fe2O3)及其微观组织的变化
Microstructure Evolution of ZrO2-(Al2O3, Fe2O3) Materials Synthesized by Frozen-drying
【摘要】 通过冷冻干燥方法制备了ZrO2-Al2O3,ZrO2-Fe2O3二元及ZrO2·(Al2O3,Fe2O3)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Fe2O3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.
【Abstract】 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.
【关键词】 冷冻干燥;
相变;
晶粒度;
复相陶瓷;
ZrO2;
【Key words】 frozen-drying; phases transformation; grains degree; multiphase ceramic; ZrO2;
【Key words】 frozen-drying; phases transformation; grains degree; multiphase ceramic; ZrO2;
【基金】 国家自然科学基金(59872044)
- 【文献出处】 无机材料学报 ,Journal of Inorganic Materials , 编辑部邮箱 ,2003年02期
- 【分类号】TB383
- 【被引频次】2
- 【下载频次】111