Y3+∶CaF2透明陶瓷的制备及其显微结构研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (11): 1997-2003.

Y³⁺∶CaF₂透明陶瓷的制备及其显微结构研究

刘作冬, 潘其悦, 刘瑞, 曹悦, 李思雅, 王嘉顺, 于永生, 刘鹏, 井强山

信阳师范大学,河南省豫南非金属矿资源高效利用重点实验室,信阳 464000

收稿日期:2024-09-11 出版日期:2024-11-15 发布日期:2024-12-09
作者简介:刘作冬(1989—),男,山东省人,博士,副教授。E-mail:d069024362@163.com
基金资助:
国家自然科学基金(62305281);河南省高等学校重点科研项目计划(23A430021);信阳师范学院'南湖学者奖励计划'青年项目

Fabrication and Microstructure of Y³⁺∶CaF₂ Transparent Ceramics

LIU Zuodong, PAN Qiyue, LIU Rui, CAO Yue, LI Siya, WANG Jiashun, YU Yongsheng, LIU Peng, JING Qiangshan

Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang 464000, China

Received:2024-09-11 Online:2024-11-15 Published:2024-12-09

摘要/Abstract

摘要： 采用化学沉淀法合成Y³⁺∶CaF₂粉体,用真空热压烧结技术制备透明陶瓷。通过XRD、SEM与TEM分析粉体特性,并研究Y³⁺∶CaF₂透明陶瓷显微结构与透过率的关系。结果表明,Y³⁺∶CaF₂粉体为立方萤石相晶体结构。随Y³⁺掺杂量的增加,粉体的平均粒径尺寸逐渐减小,晶胞参数由5.452 1 Å增大到5.465 5 Å;在900 ℃下烧结3 h得到的5%Y³⁺掺杂的CaF₂陶瓷透过率最高,样品在500和1 500 nm处的透过率分别为73.1%和86.4%。改变Y³⁺掺杂量与烧结温度均可调控陶瓷的显微结构。晶粒生长速率低,气孔不易排出,速率过高,气孔易被包裹在晶粒内部,两种情况均会降低陶瓷的透过率。本研究工作为制备高品质复合结构CaF₂透明陶瓷提供了参考。

关键词: CaF₂透明陶瓷, Y³⁺掺杂, 热压烧结, 显微结构, 透过率

Abstract: Y³⁺∶CaF₂ powders were synthesized by chemical coprecipitation method, and transparent ceramics were fabricated by vacuum hot pressing sintering method. Characteristics of the as-synthesized powders were investigated by XRD, SEM and TEM techniques, the relationship between microstructure and transmittance of transparent ceramics were also analyzed. Crystal structures of as-synthesized Y³⁺∶CaF₂ powders belong to single fluorite phase. With the Y³⁺ doping content increases, the average particles sizes decrease and the lattice constants increase from 5.452 1 Å to 5.465 5 Å. The 5%Y³⁺∶CaF₂ transparent ceramics sintered at 900 ℃ for 3 h exhibits the highest transmittance, and the transmittance at 500 and 1 500 nm are 73.1% and 86.4%, respectively. Microstructure of ceramics are modified by the Y³⁺ doping content and sintering temperatures. For a low growth velocity, it is not easy to eliminate the residual pores, while for a higher growth velocity, residual pores are easily embedded within grains. Both cases will reduce the transmittance of transparent ceramics. This work provides a reference for the preparation of high-quality composite CaF₂ transparent ceramics.

Key words: CaF₂ transparent ceramics, Y³⁺ doping, hot pressing sintering, microstructure, transmittance

中图分类号:

刘作冬, 潘其悦, 刘瑞, 曹悦, 李思雅, 王嘉顺, 于永生, 刘鹏, 井强山. Y³⁺∶CaF₂透明陶瓷的制备及其显微结构研究[J]. 人工晶体学报, 2024, 53(11): 1997-2003.

LIU Zuodong, PAN Qiyue, LIU Rui, CAO Yue, LI Siya, WANG Jiashun, YU Yongsheng, LIU Peng, JING Qiangshan. Fabrication and Microstructure of Y³⁺∶CaF₂ Transparent Ceramics[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(11): 1997-2003.

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Y³⁺∶CaF₂透明陶瓷的制备及其显微结构研究

Fabrication and Microstructure of Y³⁺∶CaF₂ Transparent Ceramics

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