Yb:Sc_(2)O_(3) Transparent Ceramics Fabricated from Co-precipitated Nano-powders:Microstructure and Optical Property  

共沉淀纳米粉体制备Yb:Sc_(2)O_(3)透明陶瓷的微结构与光学性能

作　　者：YE Junhao ZHOU Zhenzhen HU Chen WANG Yanbin JING Yanqiu LI Tingsong CHENG Ziqiu WU Junlin IVANOV Maxim HRENIAK Dariusz LI Jiang 叶君豪;周真真;胡辰;王雁斌;荆延秋;李廷松;程梓秋;吴俊林;IVANOV Maxim;HRENIAK Dariusz;李江(中国科学院上海硅酸盐研究所,透明陶瓷研究中心,上海201899;中国科学院大学材料科学与光电工程中心,北京100049;贝尔格莱德大学塞尔维亚共和国国家研究所,Vinča核科学研究所,光电转换卓越中心,贝尔格莱德11001;俄罗斯科学院乌拉尔分院电物理研究所,叶卡捷琳堡620016;波兰科学院低温与结构研究所,弗罗茨瓦夫326109)

机构地区：[1]Transparent Ceramics Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Center of Excellence for Photoconversion,Vinča Institute of Nuclear Sciences,National Institute of the Republic of Serbia,University of Belgrade,11001 Belgrade,Serbia [4]Institute of Electrophysics Ural Branch,Russian Academy of Sciences,Ekaterinburg 620016,Russia [5]Institute of Low Temperature and Structure Research,Polish Academy of Sciences,Wroclaw 326109,Poland

出　　处：《无机材料学报》2025年第2期215-224,共10页Journal of Inorganic Materials

基　　金：National Key R&D Program of China(2023YFE3812005);International Partnership Program of Chinese Academy of Sciences(121631KYSB20200039);National Center for Research and Development(WPC2/1/SCAPOL/2021);Chinese Academy of Sciences President’s International Fellowship Initiative(2024VEA0005,2024VEA0014)。

摘　　要：Sc_(2)O_(3),as a host for solid-state laser gain materials,has advantage of high thermal conductivity and easy matching with activating ions,which is promising in high-power laser applications.Currently,Yb-doped Sc_(2)O_(3) ceramics have been fabricated at very high sintering temperatures,but their optical quality and sintering process still need further improvement.In this work,5%Yb:Sc_(2)O_(3)(in mass)nano-powders were obtained by co-precipitation,and then transparent ceramics were fabricated by vacuum pre-sintering and hot isostatic pressing(HIP)post-treatment.The cubic Yb:Sc_(2)O_(3) nano-powders with good dispersity and an average crystallite of 29 nm were obtained.Influence of pre-sintering temperatures(1500-1700℃)on densification process,microstructure changes,and optical transmittance of Yb:Sc_(2)O_(3) ceramics was detected.Experimental data revealed that all samples have a uniform microstructure,while the average grain sizes increase with the increase of the sintering temperatures.Impressively,the optimum in-line transmittance of Yb:Sc_(2)O_(3) ceramics,pre-sintered at 1550℃after HIP post-treatment,reaches 78.1%(theoretical value of 80%)at 1100 nm.Spectroscopic properties of the Yb:Sc_(2)O_(3) ceramics reveal that the minimum population inversion parameterβ2 and the luminescence decay time of 5%Yb:Sc_(2)O_(3) ceramics are 0.041 and 0.49 ms,respectively,which demonstrate that the optical quality of the Yb:Sc_(2)O_(3) has been improved.Meanwhile,their best vacuum sintering temperature can be controlled down to a lower temperature(1550℃).In conclusion,Yb:Sc_(2)O_(3) nano-powders are successfully synthesized by co-precipitation method,and good optical quality transparent ceramics are fabricated by vacuum pre-sintering at 1550℃and HIP post-treatment.Sc_(2)O_(3)作为固体激光增益材料的基质,具有热导率高、与激活离子匹配性好等优点,在高功率固体激光应用中有着广阔的应用前景。目前,Yb掺杂的Sc_(2)O_(3)陶瓷可以在很高的烧结温度下合成,但陶瓷的光学质量和烧结温度还有待进一步优化。本研究采用碳酸氢铵共沉淀法制备了分散性好、平均晶粒尺寸29 nm的立方相5%Yb:Sc_(2)O_(3)(掺杂量为质量分数)纳米粉体,并采用真空预烧结和热等静压(Hot Isostatic Pressing,HIP)后处理制备了5%Yb:Sc_(2)O_(3)透明陶瓷,详细研究了真空预烧结温度(1500~1700℃)对Yb:Sc_(2)O_(3)陶瓷的致密化过程、微观结构变化及光学透过率的影响。结果表明,所有样品均具有均匀的微观结构,且随着烧结温度的升高,样品的平均晶粒尺寸增大。值得注意的是,1550℃预烧的Yb:Sc_(2)O_(3)陶瓷经HIP后处理后,在1100 nm处的最佳直线透过率达到78.1%(理论值为80%)。同时,还评估了Yb:Sc_(2)O_(3)陶瓷的光谱性能。5%Yb:Sc_(2)O_(3)陶瓷的最小粒子数反转参数β2和发光衰减时间分别为0.041和0.49 ms。综上所述,采用共沉淀法成功制备了Yb:Sc_(2)O_(3)纳米粉体,通过1550℃真空预烧结和HIP后处理得到光学质量良好的Yb:Sc_(2)O_(3)透明陶瓷。

关 键 词：NANO-POWDER Yb:Sc_(2)O_(3) transparent ceramic hot isostatic pressing optical property 

分 类 号：TQ174[化学工程—陶瓷工业]