(Y_(1-x)La_x)_2O_3透明陶瓷的制备及性能  

Fabrication and Characterization of(Y_(1-x)La_x)_2O_3 Transparent Ceramics

作　　者：张斌[1] 杨秋红[1] 陆神洲[1] 张浩佳[1] 李韫含[1] 厉颖孜[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《硅酸盐学报》2011年第3期486-490,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(60578041);上海市基础重点研究(09JC-1406500);上海市国际合作(08520707300)资助项目

摘　　要：采用传统陶瓷生产工艺制备了(Y1-xLax)2O3(x=0～0.125)透明陶瓷。研究了陶瓷的显微结构、硬度、透光性及热导率。结果表明:La2O3可以有效促进陶瓷烧结,抑制晶粒长大。La2O3添加后,陶瓷硬度由786 MPa提高到878 MPa,陶瓷热导率明显降低,由16.92 W/(m.K)降为5.68 W/(m.K)。制备得到的(Y0.90La0.10)2O3透明陶瓷光学性能良好,在300 nm到8 500 nm区间透明,最高直线透过率大于80%。（Y1-xLax）2O3（x = 0～0.125） transparent ceramics were fabricated by the conventional ceramics processing.The microstructure,hardness,light transmittance and thermal conductivity of the ceramics was investigated.The results show that La2O3 can effectively pro-mote sintering,and inhibit excessive grain growth.After La2O3 doping,the hardness of the transparent ceramics increases from 786 MPa to 878 MPa,but the thermal conductivity decreases significantly from 16.92 W/（m·K） to 5.68 W/（m·K）.The（Y0.90La0.10）2O3 transparent ceramics has excellent optical property,the transmission range is 300-8 500 nm,and the maximum transmittance is greater than 80%.

关 键 词：氧化镧钇 透明陶瓷 红外窗口 

分 类 号：TF122.1[冶金工程—粉末冶金]