层状复合结构YAG/Yb∶YAG透明陶瓷的制备与性能研究

摘要/Abstract

摘要： 以高纯商业氧化物粉体为原料,通过干压成型结合冷等静压成型得到满足设计的层状复合结构陶瓷素坯,然后采用真空预烧(1 750 ℃,30 h)结合热等静压烧结(1 750 ℃,3 h,200 MPa, Ar气氛)成功制备了高光学质量的双层和三层复合结构YAG/10%Yb∶YAG(原子数分数)透明陶瓷。研究了复合结构透明陶瓷的光学透过率、显微结构和元素分布等。结果显示,双层和三层复合结构YAG/Yb∶YAG透明陶瓷(4 mm厚度)在1 100 nm处的直线透过率分别为83.6%和84.1%。YAG与Yb∶YAG陶瓷区域均具有致密的显微结构,平均晶粒尺寸分别为29.0和34.5 μm。中心切面的元素面扫描与线扫描分析显示,YAG与Yb∶YAG陶瓷区域的界线平直,Yb元素基本只存在于Yb∶YAG陶瓷区域,表明层状复合结构透明陶瓷的实际结构与初始设计一致。

关键词: YAG/Yb∶YAG, 层状复合结构, 透明陶瓷, 固相反应烧结, 显微结构

Abstract: Using high-purity commercial oxide powders as raw materials, the layered composite ceramic green bodies that meet the design requirements were obtained by dry pressing combined with cold isostatic pressing. Two-layered and three-layered composite YAG/10%Yb∶YAG (atomic number fraction) transparent ceramics with high optical quality were successfully fabricated by vacuum pre-sintering at 1 750 ℃ for 30 h combined with hot isostatic pressing at 1 750 ℃ for 3 h under 200 MPa Ar. The optical transparency, microstructure and elemental distribution of the composite ceramics were analyzed. The results show that, the in-line transmittance values of two-layered and three-layered composite YAG/Yb∶YAG transparent ceramics with the thickness of 4 mm are 83.6% and 84.1% at 1 100 nm, respectively. Both YAG and Yb∶YAG ceramic regions have dense microstructure, and the average grain sizes are 29.0 and 34.5 μm, respectively. The element analysis of surface scanning images and linear scan images for the central section reveal that the boundary between YAG and Yb∶YAG ceramic region is straight, with Yb element mainly existing in the Yb∶YAG ceramic region, indicating that the actual structure of the layer-structured transparent ceramics is consistent with the initial design.

Key words: YAG/Yb:YAG, layered composite structure, transparent ceramics, solid-state reactive sintering, microstructure

中图分类号:

冯亚刚, 田丰, 刘子玉, 刘奕炀, 吴乐翔, 李廷松, 李江. 层状复合结构YAG/Yb∶YAG透明陶瓷的制备与性能研究[J]. 人工晶体学报, 2024, 53(11): 1901-1908.

FENG Yagang, TIAN Feng, LIU Ziyu, LIU Yiyang, WU Lexiang, LI Tingsong, LI Jiang. Fabrication and Properties of Layer-Structured YAG/Yb∶YAG Transparent Ceramics[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(11): 1901-1908.

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