摘要
采用共沉淀法制备纳米3Y-TZP粉体,并利用DSC-TG,XRD和TEM等测试方法对3Y-TZP的物理化学性能进行表征。通过研究纳米3Y-TZP粉体的烧结曲线,分析3Y-TZP素坯在烧结过程的致密化和显微结构。结果表明:在600℃下煅烧2h后,可获得晶粒尺寸为13nm,晶形发育良好、团聚较少的纳米3Y-TZP粉体。在烧结过程中,不同烧结阶段中的扩散机制不同,在烧结后期晶粒尺寸发生显著长大。
The nano 3Y-TZP powder was prepared by co-precipitation method.The physical and chemical properties of 3Y-TZP were characterized using DSC-TG,XRD,and TEM.In the study of nano 3Y-TZP powder sintering process,the relative density and microstructure of the sintered bulk were analyzed.The results showed that after calcined at 600℃for 2h,morphology well developed and agglomeration-free nano powder with grain size of 13nm was obtained.There were different diffusion mechanisms in the sintering process,grain size grew up significantly in the late sintering.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2011年第11期15-17,45,共4页
China Ceramics
基金
福建省自然科学基金(2008J0146)资助项目
