Preparation method of high-performance Cr3+ and Nd3+ compositely doped GSGG laser ceramic

A technology of laser ceramics and compound doping, which is applied in the preparation of Cr3+, Nd3+: GSGG nano-powders, Cr3+, Nd3+ compound doped GSGG laser ceramics and its preparation field by one-step co-precipitation method, which can solve the problem of poor sintering activity and powder particles Large size, wide particle size distribution, etc., to achieve the effect of high doping concentration, dense structure, and wide fluorescence spectrum

Inactive Publication Date: 2017-07-21
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The powder obtained by this method has large particle size and wide particle size distribution, and poor sintering activity

Method used

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  • Preparation method of high-performance Cr3+ and Nd3+ compositely doped GSGG laser ceramic
  • Preparation method of high-performance Cr3+ and Nd3+ compositely doped GSGG laser ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) High-purity Gd with a weight ratio content of 99.99% 2 o 3 、Sc 2 o 3 and Ga 2 o 3 The powder is dissolved in dilute nitric acid according to the molar ratio of 3:2:3, Cr 2 o 3 、Nd 2 o 3 The powder was dissolved in dilute nitric acid according to 0at.% and 0at.%, respectively, and then mixed into a uniform 5mol / L nitrate solution.

[0018] 2) Using ammonia water as a precipitating agent, inject it into the above mixed solution in one step, and at the same time fully stir to adjust the pH of the solution to 8-10, and then age at room temperature for 8 hours.

[0019] 3) After aging, filter and wash the precipitate with deionized water and absolute ethanol, dry the washed precipitate in a drying oven at 100°C for 24 hours, and then grind the dried powder and calcinate at 1000°C in an air atmosphere 4h.

[0020] 4) The calcined powder is firstly formed by dry pressing at a pressure of 200 MPa, and then cold isostatically pressed at a pressure of 200 MPa.

[00...

Embodiment 2

[0023] Adopt the same process of embodiment 1, just make Cr 2 o 3 、Nd 2 o 3 The powder is dissolved in dilute nitric acid according to 0 at.% and 1 at.% respectively, and the rest of the conditions are the same as in Example 1, and laser ceramics can also be obtained.

Embodiment 3

[0025] Adopt the same process of embodiment 1, just make Cr 2 o 3 、Nd 2 o 3 The powder was dissolved in dilute nitric acid at 0.5 at.% and 1 at.% respectively, and the rest of the conditions were the same as in Example 1, and laser ceramics could also be obtained.

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Abstract

The invention discloses a high-performance Cr3+ and Nd3+ compositely doped GSGG laser ceramic and a preparation method of the ceramic. The preparation method comprises the following steps that high-purity Cr3O3, Nd2O3, Gd2O3, Sc2O3 and Ca2O3 powder is taken as the raw materials, the raw materials are compounded according to the stoichiometric ratio of the raw materials, a nitrate solution is formed after uniform mixing, the raw materials are injected into the nitrate solution by one step with ammonium hydroxide as a precipitant, at the same time, full stirring is performed, and a sediment solution is formed by aging; the sediment solution is filtered, washed and dried to obtain a precursor powder body, calcination is performed at the temperature of 800 DEG C to 1,100 DEG C in the air atmosphere, and a Cr3+ and Nd3+: GSGG nano-powder body is obtained; the nano-powder body is subjected to isostatic cool pressing after being dry-pressed, vacuum sintering is performed, a sample is taken out and ground and polished after furnace temperature is cooled to the room temperature, and the Cr3+ and Nd3+: GSGG laser ceramic is obtained. Compared with single crystals of the system, the preparation technology is simple, and the comprehensive performance of the material can be improved.

Description

technical field [0001] The present invention relates to a Cr 3+ ,Nd 3+ Composite-doped GSGG laser ceramics and its preparation method, especially related to the preparation of Cr by one-step co-precipitation method 3+ ,Nd 3+ : GSGG nanometer powder belongs to the technical field of laser ceramic preparation. Background technique [0002] An important development direction of laser technology is solid-state lasers with high average power and high peak power. The solid-state laser dielectric materials of solid-state lasers have developed from the first few crystals to hundreds of materials covering the three major fields of crystals, glass, and ceramics. The emergence of laser ceramics provides a new way for the development of solid-state laser materials to high power, large size, and multifunction. Compared with laser ceramics, crystals have a longer growth cycle, higher preparation costs, more complicated preparation process, and limited doping concentration, which is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/50
CPCC04B35/50C04B2235/3224C04B2235/3241C04B2235/3251C04B2235/3286
Inventor 王树明叶青
Owner UNIV OF SCI & TECH BEIJING
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