Preparation of CaF2 transparent ceramics by cold sintering
Preparation of CaF2 transparent ceramics by cold sintering
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DOI：
10.1016/j.ceramint.2022.08.339
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发表时间：
2022-09
影响因子：
5.2
通讯作者：
Ningjie Guo;G. Zhu;Hua-rui Xu;Xupeng Jiang;Xiuyun Zhang;Jingjie Song;Yunyun Zhao;Kunpeng Jiang;Yejun Zhang;Qianbing Wang;Shenfeng Long;Tingting Wei;A. Yu
中科院分区：
文献类型：
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作者：
Ningjie Guo;G. Zhu;Hua-rui Xu;Xupeng Jiang;Xiuyun Zhang;Jingjie Song;Yunyun Zhao;Kunpeng Jiang;Yejun Zhang;Qianbing Wang;Shenfeng Long;Tingting Wei;A. Yu
采用冷烧结工艺制备了高透明CaF 2陶瓷，并对其显微结构和透过率进行了研究。结果表明，在350 °C、470 MPa条件下，采用冷烧结工艺可成功烧结出相对密度为97.65%的试样。显微照片表明，陶瓷具有较高的相对密度，平均晶粒尺寸约为0.3 μm。当制备的样品厚度为1 mm时，在可见光区（380 nm-780 nm）的平均透过率为81.99%，在1100 nm处的透过率为89.00%。CaF 2陶瓷的微波介电性能为Qf= 10,499 GHz，εr= 3.858（350 °C）。
High transparent CaF2ceramics were prepared by a cold sintering process, and their microstructure and transmittance were studied. The results show that the sample with a relative density of 97.65% can be successfully sintered by the cold sintering process at 350 °C and 470 MPa. Micrographs show that the ceramics have high relative density and the average grain size is about 0.3 μm. When the thickness of the prepared sample is 1 mm, the average transmittance in the visible region (380 nm–780 nm) is 81.99%, and the transmittance at 1100 nm is 89.00%. CaF2ceramics microwave dielectric property is Qf= 10,499 GHz, εr= 3.858 at 350 °C.