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Process for synthesizing YAG single crystal nano-powder

A technology of single crystal nanometer and powder, which is applied in the direction of single crystal growth, single crystal growth, chemical instruments and methods, etc. It can solve the problems of difficulty in controlling the shape of powder particles, complicated flow system equipment, and inability to obtain powder materials. Achieve the effect of low cost, easy access to raw materials, and promotion of development

Inactive Publication Date: 2008-11-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flow system equipment is relatively complicated, and there are many parameters that need to be adjusted during the reaction process.
Static system can also obtain pure phase YAG nanopowder, but because it is a one-step reaction, the shape of powder particles is difficult to control, and it is impossible to obtain powder materials for preparing YAG transparent ceramics with ideal performance.

Method used

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  • Process for synthesizing YAG single crystal nano-powder
  • Process for synthesizing YAG single crystal nano-powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Ingredients:

[0036] 1) 12 milliliters of 0.5 mol / liter yttrium nitrate Y (NO 3 ) 3 solution, 20 ml of 0.5 mol / L aluminum nitrate Al(NO 3 ) 3 The solution, followed by 68 ml of deionized water, were added to a 250 ml beaker (beaker 1).

[0037] 2) 150 ml of 1 mol / L ammonium bicarbonate NH 4 HCO 3 The solution was added to a 500 ml beaker (beaker 2).

[0038] 2. Co-precipitation:

[0039] The solution in beaker 1 was added dropwise to beaker 2, and stirred continuously with a glass rod, reacted at 25°C and aged for 60 minutes to obtain a solid-liquid mixture with precipitation.

[0040] 3. Washing and filtering:

[0041] The solid-liquid mixture with the precipitate was filtered through a vacuum filter (the pore size of the filter membrane was 0.2 μm) to obtain the precipitate. The precipitate was redispersed in deionized water, and filtered with a vacuum filter (the pore size of the filter membrane was 0.2 μm). The above steps were repeated 3 times to obta...

Embodiment 2

[0054] 1. Ingredients:

[0055] 1) 11.76 milliliters of 0.5 mol / liter yttrium nitrate Y (NO 3 ) 3 solution, 20 ml of 0.5 mol / L aluminum nitrate Al(NO 3 ) 3 solution, 1.2 ml of 0.1 mol / L neodymium nitrate Nd(NO 3 ) 3 The solution, 67.04 ml of deionized water were added sequentially to a 250 ml beaker (beaker 1).

[0056] 2) 150 ml of 1 mol / L ammonium bicarbonate NH 4 HCO 3 The solution was added to a 500 ml beaker (beaker 2).

[0057] 2. Co-precipitation:

[0058] The solution in beaker 1 was added dropwise to beaker 2, and stirred continuously with a glass rod, reacted at 23°C and aged for 90 minutes to obtain a solid-liquid mixture with precipitation.

[0059] 3. Washing and filtering:

[0060] The solid-liquid mixture with the precipitate was filtered through a vacuum filter (the pore size of the filter membrane was 0.2 μm) to obtain the precipitate. The precipitate was redispersed in deionized water, and filtered with a vacuum filter (the pore size of the filter ...

Embodiment 3

[0073] 1. Ingredients:

[0074] 1) 11.76 milliliters of 0.5 mol / liter yttrium nitrate Y (NO 3 ) 3 solution, 20 ml of 0.5 mol / L aluminum nitrate Al(NO 3 ) 3 solution, 1.2 ml of 0.1 mol / L europium nitrate Eu(NO 3 ) 3 The solution, 67.04 ml of deionized water were added sequentially to a 250 ml beaker (beaker 1).

[0075] 2) 150 ml of 1 mol / L ammonium bicarbonate NH 4 HCO 3 The solution was added to a 500 ml beaker (beaker 2).

[0076] 2. Co-precipitation:

[0077] The solution in beaker 1 was added dropwise to beaker 2, and stirred continuously with a glass rod, reacted at 20°C and aged for 120 minutes to obtain a solid-liquid mixture with precipitation.

[0078] 3. Washing and filtering:

[0079] The solid-liquid mixture with the precipitate was filtered through a vacuum filter (the pore size of the filter membrane was 0.2 μm) to obtain the precipitate. The precipitate was redispersed in deionized water, and filtered with a vacuum filter (the pore size of the filter ...

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Abstract

The invention discloses a method for compounding YAG single crystal nanometer powder, wherein routine inorganic salt is used as raw material to obtain a solid precursor material by a coprecipitation; supercritical water and sub-critical water are used as reaction media; the YAG single crystal nanometer powder material is compounded under the pressure of 8-30MPa and the temperature of 300 - 420 DEG C. The YAG nanometer powder material compounded by the method of the invention has the advantages that the phase is pure; the feature of the grain is a regular approximate spherical polyhedron; the distribution of the grain size is appropriate; foundation is established for preparing YAG transparent pottery laser material or device and promoting the study and development of novel laser material.

Description

technical field [0001] The invention relates to a method for preparing a single crystal nanostructure of an oxide laser material, in particular to a synthetic yttrium aluminum garnet Y 3 al 5 o 12 (referred to as YAG) method of single crystal nanopowder, i.e. yttrium aluminum garnet Y 3 al 5 o 12 (referred to as YAG) or the co-precipitation-supercritical system composite route synthesis method of YAG single crystal nanopowder doped with rare earth elements. Background technique [0002] Yttrium aluminum garnet Y 3 al 5 o 12 (YAG for short) single crystal is an important laser material with excellent performance and wide application. However, the production cost of YAG single crystal is relatively high, and the current growth process is used to obtain a single crystal with a concentrated core area of ​​defects, which cannot be processed into a crystal rod or wafer with a large cross-section. Studies have shown that, compared with growing YAG single crystals, using YA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/28C30B7/10
Inventor 陶绪堂李博郑庆新张华东郑晶静蒋民华
Owner SHANDONG UNIV
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