Effect of reactive raw materials and pre-loading pressure on the microstructure and transmittance of pure CaF2 transparent ceramics
Effect of reactive raw materials and pre-loading pressure on the microstructure and transmittance of pure CaF2 transparent ceramics
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反应原料和预压压力对纯CaF2透明陶瓷微观结构和透光率的影响
DOI：
10.1016/j.matchemphys.2023.127315
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发表时间：
2023-01
影响因子：
4.6
通讯作者：
Yongqiang Zhang
中科院分区：
文献类型：
--
作者：
Lin Chen;Bingchu Mei;Weiwei Li;Zhiwei Zhou;Yu Yang;Yongqiang Zhang
本文报道了一种热压法制备纯caf2透明陶瓷的有效方法。研究了不同反应原料和预加载压力对纯caf2透明陶瓷微观结构和透光率的影响。结果表明，caf2陶瓷的光学质量高度依赖于合成粉末的反应原料和预加载压力。FESEM结果表明，预加载压力使纯caf2陶瓷的平均晶粒尺寸发生了显著变化。随着预加载压力从0 MPa增加到15 MPa，所得陶瓷在光谱各波长的在线透射率均有明显提高。本研究对氟基陶瓷烧结过程的机理有深入的认识，对提高caf2透明陶瓷的光学质量具有参考价值。
We reported an efficient way of fabricating pure CaF2transparent ceramics using hot-pressing (HP) method. The effects of different reactive raw materials and pre-loading pressures on the microstructure and transmittance of pure CaF2transparent ceramics were investigated. It was demonstrated that the optical quality of CaF2ceramics was highly dependent on the reactive raw materials for synthesis of powders and pre-loading pressure. FESEM results manifested that the pre-loading pressure caused significant changes in the average grain size of pure CaF2ceramics. With the pre-loading pressure increasing from 0 MPa to 15 MPa, the in-line transmittance of the obtained ceramics was obviously improved at all wavelength in the spectra. This work provides insight into mechanistic understanding of the sintering process of the fluoride-based ceramics and provides a reference value for improvement the optical quality of CaF2transparent ceramics.
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