Microstructure evolution in HIPed AlON and its effect on optical property

被引:12
作者
Chen, Feng [1 ]
Zhang, Fang [1 ]
Wang, Jun [1 ]
Zhang, Jian [1 ]
Zhang, Hailong [1 ]
Tian, Run [1 ]
Zhang, Zhao [1 ]
Wang, Shiwei [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源
OPTICAL MATERIALS EXPRESS | 2015年 / 5卷 / 08期
关键词
ANNEALING TWINS; TRANSPARENT; ALUMINA;
D O I
10.1364/OME.5.001682
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Transparent aluminium oxynitride (AlON) ceramics were prepared by hot isostatic pressing (HIP) with 0.08 similar to 0.14 wt% Y2O3 or 0.01 similar to 0.04 wt% La2O3 as sintering additives. Both Y2O3 and La2O3 additives prompted sintering process and accelerated grain growth. When higher amount of Y2O3 (0.12 wt%) or La2O3 (0.03 wt%) additives were doped, extensive twins occurred accompanied with the coarsing of grain size (similar to 100 mu m). Electron backscatter diffraction (EBSD) analysis showed that twin boundaries increased with the increasing of Y2O3/La2O3 concentrations. By co-doping of Y2O3-La2O3 additives with reduced doping level, the formation of twins was successfully suppressed, which was necessary to limit the additional light scattering of twin boundaries. (C) 2015 Optical Society of America
引用
收藏
页码:1682 / 1688
页数:7
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