Ho-Doped transparent scandia ceramic and preparation method thereof

A technology of transparent oxidation and scandium oxide, which is applied in the field of Ho-doped transparent scandium oxide ceramics and its preparation, can solve the problems of long time consumption, high cost, and difficult control
CN109354497AActive Publication Date: 2019-02-19INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Publication Date
2019-02-19

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Abstract

The invention discloses Ho-doped transparent scandia ceramic and a preparation method thereof. The preparation method includes: adding scandia powder into electronic dilute nitric acid to obtain scandium nitrate, adding scandia powder and scandium nitrate solution into a ball milling tank, adding little alumina powder and lithium fluoride powder as sintering aids, wherein doping quantity of alumina is 0-0.2 at.% and doping quantity of lithium fluoride is 0.8-1.2 at.%, grinding with alumina milling balls to obtain a slurry, drying, screening to obtain ceramic powder, pressing the ceramic powderinto discs, performing repeated heating, sintering and cooling at certain temperatures respectively in a muffle furnace, a vacuum sintering furnace and a hot isostatic pressure furnace, and loweringthe temperature to room temperature to obtain prefabricated parts; calcining the prefabricated parts in the muffle furnace, annealing, and polishing to obtain the finished ceramic. Alumina is used herein to assist lithium fluoride to act as the sintering aids, so that the Ho-doped transaprent scandia ceramic is attained.
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Description

technical field

[0001] The invention relates to the field of transparent ceramics, more specifically, the invention relates to a Ho-doped transparent scandium oxide ceramic and a preparation method thereof. Background technique

[0002] Scandium oxide (Sc 2 o 3 ) belongs to the cubic crystal system, and has high transmittance in the visible to mid-infrared bands. At the same time, its corresponding band gap is 5.7eV, which can be well matched with doped rare earth ions to obtain wavelengths from visible to infrared fluorescence. In addition, due to the mechanical and thermal properties of scandium oxide matrix itself such as high thermal conductivity, low phonon energy and wide emission cross-sectional area, scandium oxide becomes one of the most ideal media for high-energy infrared lasers. Doped with holmium ions (Ho 3+ ) scandium oxide can obtain mid-infrared laser output with a wavelength above 2.15 μm, and the laser in this band has broad application prospects in lid...

Claims

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