A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of preparation of transparent ceramics, and particularly discloses a preparation method of optical-grade dysprosium oxide magneto-optical transparent ceramics, wherein the preparation method comprises the following steps: (1) synthesis of dysprosium oxide nanocrystalline powder: preparing a Dy(NO3)3 rare earth solution with specific concentration and pH value, adding 5 at.% La(NO3)3, and uniformly mixing; and dropwise adding a precipitant solution into a mother solution, continuously stirring, and stopping titration and stirring until the pH value of the precipitant solution reaches a fixed value; (2) aging the obtained precipitation solution for a fixed time to obtain a colloidal precipitate; (3) carrying out post-treatment on the precipitate obtained in the step (2), and calcining in a muffle furnace; and (4) carrying out dry pressing molding and cold isostatic pressing on the nano-powder in the step (3) at one time to obtain a ceramic body; and sintering in a pressureless sintering furnace with reducing gas to obtain the dysprosium oxide magneto-optical transparent ceramic. The preparation method is mainly used for preparing the dysprosium oxide magneto-optical transparent ceramic, and the problems that in the prior art, a magneto-optical ceramic is poor in transparency at the low wave band, and the production process is complex are solved.
本发明申请属于透明陶瓷制备技术领域，具体公开了一种光学级氧化镝磁光透明陶瓷的制备方法，包括以下步骤：(1)氧化镝纳米晶粉体的合成包括：配置含有特定浓度和pH值的Dy(NO3)3稀土溶液，添加5at.％La(NO3)3混合均匀；将沉淀剂溶液度滴入母液中并持续搅拌，直至沉淀液PH值达到固定值后停止滴定和搅拌；(2)将所得沉淀液陈化固定时间后获得胶状沉淀；(3)将步骤(2)中所得沉淀进行后处理，在马弗炉中煅烧。(4)将步骤(3)中的纳米粉体一次进行干压成型和冷等静压后获得陶瓷坯体；在具有还原气体的无压烧结炉中烧结之后获得氧化镝磁光透明陶瓷。本发明主要用于制备氧化镝磁光透明陶瓷，解决了现有技术中磁光陶瓷在低波段透明性差、生产工艺复杂的问题。
The invention belongs to the technical field of preparation of transparent ceramics, and particularly discloses a preparation method of optical-grade dysprosium oxide magneto-optical transparent ceramics, wherein the preparation method comprises the following steps: (1) synthesis of dysprosium oxide nanocrystalline powder: preparing a Dy(NO3)3 rare earth solution with specific concentration and pH value, adding 5 at.% La(NO3)3, and uniformly mixing; and dropwise adding a precipitant solution into a mother solution, continuously stirring, and stopping titration and stirring until the pH value of the precipitant solution reaches a fixed value; (2) aging the obtained precipitation solution for a fixed time to obtain a colloidal precipitate; (3) carrying out post-treatment on the precipitate obtained in the step (2), and calcining in a muffle furnace; and (4) carrying out dry pressing molding and cold isostatic pressing on the nano-powder in the step (3) at one time to obtain a ceramic body; and sintering in a pressureless sintering furnace with reducing gas to obtain the dysprosium oxide magneto-optical transparent ceramic. The preparation method is mainly used for preparing the dysprosium oxide magneto-optical transparent ceramic, and the problems that in the prior art, a magneto-optical ceramic is poor in transparency at the low wave band, and the production process is complex are solved.
本发明申请属于透明陶瓷制备技术领域，具体公开了一种光学级氧化镝磁光透明陶瓷的制备方法，包括以下步骤：(1)氧化镝纳米晶粉体的合成包括：配置含有特定浓度和pH值的Dy(NO3)3稀土溶液，添加5at.％La(NO3)3混合均匀；将沉淀剂溶液度滴入母液中并持续搅拌，直至沉淀液PH值达到固定值后停止滴定和搅拌；(2)将所得沉淀液陈化固定时间后获得胶状沉淀；(3)将步骤(2)中所得沉淀进行后处理，在马弗炉中煅烧。(4)将步骤(3)中的纳米粉体一次进行干压成型和冷等静压后获得陶瓷坯体；在具有还原气体的无压烧结炉中烧结之后获得氧化镝磁光透明陶瓷。本发明主要用于制备氧化镝磁光透明陶瓷，解决了现有技术中磁光陶瓷在低波段透明性差、生产工艺复杂的问题。
Preparation method of optical-grade dysprosium oxide magneto-optical transparent ceramic
一种光学级氧化镝磁光透明陶瓷的制备方法
2021-11-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method and application of magneto-optical transparent ceramic
| European Patent Office | 2023
TRANSPARENT CERAMIC FOR MAGNETO-OPTICAL ELEMENT, AND MAGNETO-OPTICAL ELEMENT
| European Patent Office | 2024
TRANSPARENT CERAMIC FOR MAGNETO-OPTICAL ELEMENT, AND MAGNETO-OPTICAL ELEMENT
| European Patent Office | 2025
TRANSPARENT CERAMIC FOR MAGNETO-OPTICAL ELEMENTS AND MAGNETO-OPTICAL DEVICE
| European Patent Office | 2024
Transparent ceramic for magneto-optical element, and magneto-optical element
| European Patent Office | 2024