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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

Active Publication Date: 2019-02-19
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of this technical route is complex, time-consuming, high-cost, difficult to control, and very difficult to prepare in batches

Method used

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  • Ho-Doped transparent scandia ceramic and preparation method thereof
  • Ho-Doped transparent scandia ceramic and preparation method thereof
  • Ho-Doped transparent scandia ceramic and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 13

[0044] (1) According to the mass volume ratio of 80g:1000ml, adding the oxidized di oxide powder of 4N purity into the electronic grade dilute nitric acid with a concentration of 22vol.%, stirring while heating until completely dissolving, obtaining the di nitrate solution;

[0045] (2) Add the scandium oxide powder of 4N purity and the Di nitrate solution into the ball mill tank, then add a small amount of alumina powder of 4N purity and lithium fluoride powder of 4N purity as sintering aids, wherein Ho 3+ See Table 2 for the doping concentration, alumina doping amount, and lithium fluoride doping amount. Use 3N pure alumina ball milling balls as the grinding medium and mix uniformly with a uniform speed planetary ball mill to obtain a slurry; the uniform speed planetary ball mill described in step (2) The speed is 220rpm. Each of the Di oxide powder, Scandium oxide powder, Aluminum oxide powder and Lithium fluoride powder has an average particle diameter of less than 1 micro...

Embodiment 14

[0049] (1) According to the mass volume ratio of 100g:800ml, the dioxidized powder of 4N purity is added in the electronic grade dilute nitric acid with a concentration of 18vol.%, and stirred until completely dissolved while heating to obtain the dinitrate solution;

[0050] (2) Add the scandium oxide powder of 4N purity and the Di nitrate solution into the ball mill tank, then add a small amount of alumina powder of 4N purity and lithium fluoride powder of 4N purity as sintering aids, wherein Ho 3+ See Table 2 for the doping concentration, alumina doping amount, and lithium fluoride doping amount. Use 3N pure alumina ball milling balls as the grinding medium and mix uniformly with a uniform speed planetary ball mill to obtain a slurry; the uniform speed planetary ball mill described in step (2) The speed is 180rpm. Each of the Di oxide powder, Scandium oxide powder, Aluminum oxide powder and Lithium fluoride powder has an average particle diameter of less than 1 micron. (3)...

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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.

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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Application Information

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IPC IPC(8): C04B35/50C04B35/622C04B35/64
CPCC04B35/50C04B35/622C04B35/64C04B2235/3217C04B2235/3224C04B2235/445C04B2235/9653
Inventor 敬畏胥涛李芳余盛全
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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