LaMgAl_(11)O_(19)加入对8YSZ材料力学性能的影响  

Effects of LaMgAl_(11)O_(19) Addition on the Mechanical Properties of 8YSZ Materials

作　　者：李吉皎[1] 房明浩[1] 黄赛芳[1] 黄朝晖[1] 刘艳改[1] 

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《人工晶体学报》2011年第1期193-196,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金(50802091)资助项目;中央高校基本科研业务费专项资金(2010ZY31)资助项目

摘　　要：为改善8YSZ材料的力学性能,利用呈板片状结构的LaMgAl11O19来强韧化8YSZ陶瓷,在1600℃下保温3 h制备了LaMgAl11O19-8YSZ复相陶瓷,研究了LaMgAl11O19的添加量对8YSZ基复相陶瓷的致密度、显微形貌和力学性能的影响。结果表明,添加板片状LaMgAl11O19可较明显地改善8YSZ陶瓷的力学性能。当LaMgAl11O19的添加量为20 wt%时,8YSZ基复相陶瓷的抗弯强度和断裂韧性分别为297.4 MPa和4.0 MPa.m1/2。In order to improve the mechanical properties of 8YSZ material,plate-like LaMgAl11O19 was added for strengthening-toughening of 8YSZ ceramic.The effects of LaMgAl11O19 addition on the phase composition,relative density,microstructure and mechanical properties were investigated.The results show that the mechanical properties of 8YSZ ceramic improved obviously when plate-like LaMgAl11O19 was added.When the addition of LaMgAl11O19 was 20 wt%.The fracture toughness and bending strength reached 297.4 MPa and 4.0 MPa·m^1/2,respectively.

关 键 词：8YSZ LaMgAl11O19 抗弯强度 断裂韧性 

分 类 号：TB332[一般工业技术—材料科学与工程]