Fabrication and optical characterizations of CaF2–SrF2–NdF3 transparent ceramic
Fabrication and optical characterizations of CaF2–SrF2–NdF3 transparent ceramic
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DOI：
10.1016/j.matlet.2015.12.083
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发表时间：
2016-03
影响因子：
3
通讯作者：
Zhuang Chunhui;Jinghong Song;B. Mei;Weiwei Li;Zuodong Liu
中科院分区：
文献类型：
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作者：
Zhuang Chunhui;Jinghong Song;B. Mei;Weiwei Li;Zuodong Liu
采用直接沉淀法合成了 CaF2-SrF2-NdF3 纳米粉体。 X 射线粉末衍射和透射电子显微镜观察表明，粉末是单相的，平均粒径约为 20 nm。 CaF2-SrF2-NdF3透明陶瓷采用热压（HP）方法在800℃温度和30MPa压力下制备。透明陶瓷的显微照片显示出无孔结构，平均晶粒尺寸约为 0.5 μm。对于2毫米厚的陶瓷样品，陶瓷样品在250 nm至1400 nm波长范围内的直线透过率达到86%。测量并讨论了透明陶瓷样品的吸收光谱和发射光谱。
Nanopowders of CaF2–SrF2–NdF3were synthesized by direct precipitation method. X-ray powder diffraction and transmission electron microscopy observations indicated that the powders were single phased with mean particle size around 20 nm. CaF2–SrF2–NdF3transparent ceramic was fabricated by hot-pressed (HP) method at the temperature of 800 °C under pressure of 30 MPa. Micrograph of the transparent ceramic exhibited a pore-free structure and the average grain size was about 0.5 μm. For a 2 mm thickness ceramic sample, the in-line transmittance of the ceramic sample reached 86% in the wavelength from 250 nm to 1400 nm. The absorption and emission spectra of transparent ceramics sample were measured and discussed.