Tm3+离子掺杂YAG纳米粉体合成及透明陶瓷烧结研究

摘要:掺铥钇铝石榴石(Tm:YAG)透明陶瓷拥有很多良好的性能，如：力学性能、光学性能以及热学性能，在将来或将替代同类型的新型晶体激光材料。

本论文采用的湿化学共沉淀的方法制备掺铥钇铝石榴石(Tm:YAG)透明陶瓷。在实验过程中，本论文主要研究了湿化学共沉淀法的制备工艺和成品性能的关系，研究了关于影响掺铥钇铝石榴石(Tm:YAG)透明陶瓷的粉体和体材料透明性的主要因素。43691

本次实验通过PH的调控（7.5、8.0、8.5）研究发现：当PH值为8.00时，粉体能够形成YAG纯相，且粉体颗粒粒度分布相对均匀。对煅烧温度的研究表明：经马弗炉1250℃煅烧的YAG粉体，得到的粉体SEM表征结果最为理想，分散相对均匀。对沉淀前驱体的陈化时间（0-48h）的研究表明：陈化时间在24小时最好，粒度分布最为均匀。

综合以上优选的粉体合成工艺，最终通过湿化学共沉淀法和氢气还原气氛烧结1750oC/10h获得了线性透过率达到45%的Tm：YAG透明陶瓷。

毕业论文关键词：湿化学共沉淀法；Tm：YAG；烧结致密化；透明陶瓷；

Tm3 + YAG Nanopowders Doped Synthesis and Sintering of transparent ceramics

Abstract:Thulium-doped yttrium aluminum garnet (Tm: YAG) transparent ceramic has a lot of good properties, such as: mechanical properties, optical properties and thermal properties, or in the future will replace the same type of novel crystal laser materials.

the wet-chemical co-precipitation method for the preparation of a thulium-doped yttrium aluminum garnet (Tm: YAG) transparent ceramics. During the experiment, this paper studied the chemical co-precipitation method of preparation and the relationship between product performance, research on the impact of a thulium-doped yttrium aluminum garnet (Tm: YAG) transparent ceramic powder and bulk material transparency major factor.

The experiment by regulation of the PH (7.5,8.0,8.5) found that: When the PH value of 8.00, the powder can be formed of pure YAG phase and the powder particle size distribution is relatively uniform. Studies show that the calcination temperature: The muffle furnace 1250 ℃ YAG powders calcined powders SEM characterization results obtained in the most ideal, relatively uniform dispersion. Precipitate precursor aging time (0-48h) studies have shown that: the aging time is preferably 24 hours, most uniform particle size distribution.

Based on the above preferred powder synthesis process, eventually co-precipitation method and hydrogen reducing atmosphere sintering 1750oC-10h obtained by wet chemical linear transmittance of 45% of Tm: YAG transparent ceramics.

Keywords: Wet chemical co-precipitation method; Tm: YAG; densification; transparent ceramics;

第一章绪论 1

1.1 引言 1

1.2 论文研究的意义 1

1.3 Tm：YAG透明陶瓷 2

1.3.1 Tm：YAG晶体结构 2

1.3.2 Tm：YAG透明陶瓷的制备方法 3

1.3.3 YAG陶瓷透光机理 4

1.3.4 影响透明陶瓷的透明性的原因 4

1.4 本论文主要研究的内容 6

第二章实验部分以及研究 7

2.1 实验方案 7

2.1.1 实验原料 7

2.1.2实验仪器与设备 7

2.1.3 测试条件 7

2.1.4 Tm：YAG透明陶瓷的制备工艺 Tm3+离子掺杂YAG纳米粉体合成及透明陶瓷烧结研究:http://www.751com.cn/huaxue/lunwen_44650.html