Y-TZP/MgAl_2O_4复相粉末和陶瓷的低温制备  

Low-temperature Synthesizing Y-TZP/MgAl_2O_4 Composite Powder and Ceramic

作　　者：封铁柱[1] 邵刚勤[1] 熊震[1] 周芙蓉[1] 王天国[1] 张文俊[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《武汉理工大学学报》2010年第5期6-8,19,共4页Journal of Wuhan University of Technology

基　　金：教育部科学技术重点研究项目(105123)

摘　　要：为研究第二相粒子镁铝尖晶石（MgAl2O4）的引入对氧化钇稳定的四方氧化锆多晶体（Y-TZP）高温超塑性的影响,分别采用分步法和一步法制备了Y-TZP/30%MgAl2O4纳米粉末和亚微复相陶瓷。结果表明：MgAl2O4第二相粒子的引入不会使Y-TZP失稳;在1 580℃大气烧结1 h所制备的复相陶瓷中,0.7-1μm的镁铝尖晶石晶粒均匀地分散在0.1-0.3μm四方氧化锆晶粒中,构成相结合好的致密复合体。In order to study the influence of MgAl2O4 additive phase on the high temperature superplastic property of Y-TZP based ceramic,multi-steps and one-step synthesizing processes were used to prepare Y-TZP/30%MgAl2O4 nano-powder and submicro-grained ceramic composite.Results show that Y-TZP phase kept stable after MgAl2O4 phase was introduced.After sintered in 1 580 ℃ for 1 h,the spinel grains with grain size of 0.7～1 μm were dispersed homogeneously in YTZP based ceramic with grain size of 0.1～0.3 μm.They constituted a compact ceramic composite with matching phases.

关 键 词：Y-TZP MGAL2O4 超塑性 复相陶瓷 

分 类 号：TB321[一般工业技术—材料科学与工程]