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Preparation method for strontium fluoride optical material with composite structure

A technology of optical materials and composite structures, applied in active medium materials, lasers, laser parts, etc., can solve problems such as the research results and literature reports of strontium fluoride optical materials with unseen composite structures, so as to alleviate thermal effects and improve thermal conductivity. rate effect

Pending Publication Date: 2020-07-03
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on composite structural optical materials is mainly based on oxide components such as YAG, and there are no research results and literature reports on composite structural strontium fluoride optical materials.

Method used

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  • Preparation method for strontium fluoride optical material with composite structure
  • Preparation method for strontium fluoride optical material with composite structure
  • Preparation method for strontium fluoride optical material with composite structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Preparation process of powder raw materials: Using strontium nitrate and potassium fluoride reagents as raw materials, chemical precipitation method is used to synthesize SrF in aqueous solution 2 The suspension is centrifuged-washed-dried-grinded to obtain SrF 2 Powder. Then, weigh 10 gSrF 2 Powder, 0.5 g neodymium fluoride (NdF 3 ) Powder, mix the two powders in an alcohol solution, put the suspension in an ultrasonic cleaner for 30 minutes, and then dry-grind again to obtain SrF 2 -NdF 3 (5wt.%) Mixed powder.

[0026] 2) The forming process of the composite structure blank: load 1.0 g SrF into the stainless steel mold 2 Powder, apply a pressure of 20 MPa to the steel mold and hold the pressure for 5 minutes; fill the mold with 1.0 g SrF 2 -NdF 3 (5wt.%) Mix powder, apply 20 MPa pressure to the steel mold, and hold the pressure for 5 min; load 1.0 g SrF into the mold 2 For powder, apply a pressure of 20 MPa to the steel mold and hold the pressure for 5 min; put the pr...

Embodiment 2

[0031] 1) Preparation process of powder raw materials: Using strontium nitrate and potassium fluoride reagents as raw materials, chemical precipitation method is used to synthesize SrF in aqueous solution 2 The suspension is centrifuged-washed-dried-grinded to obtain SrF 2 Powder. Then, weigh 10 gSrF 2 Powder, 1.0 g of ytterbium fluoride (YbF 3 ) Powder, mix the two powders in an alcohol solution, put the suspension in an ultrasonic cleaner for 30 minutes, and then dry-grind again to obtain SrF 2 -YbF 3 (10 wt.%) mixed powder; use the same method to get SrF 2 -YbF 3 (5 wt.%) Mixed powder.

[0032] 2) The forming process of the composite structure blank: Put 0.8 g SrF into the stainless steel mold 2 Powder, apply a pressure of 10 MPa to the steel mold, hold the pressure for 1 min; put 0.8 g SrF into the mold 2 -YbF 3 (5 wt.%) Mixed powder, apply a pressure of 10 MPa to the steel mold, hold the pressure for 1 min; put 0.8 g SrF into the mold 2 -YbF 3 (10wt.%) Mix powder, apply a p...

Embodiment 3

[0036] 1) Preparation process of powder raw materials: Using strontium nitrate and potassium fluoride reagents as raw materials, chemical precipitation method is used to synthesize SrF in aqueous solution 2 The suspension is centrifuged-washed-dried-grinded to obtain SrF 2 Powder. Then, weigh 10 gSrF 2 Powder, 0.2 g of erbium fluoride (ErF 3 ) Powder, mix the two powders in an alcohol solution, and place the suspension in an ultrasonic cleaner for 30 minutes, then dry and grind again to obtain SrF 2 -ErF 3 (2 wt.%) mixed powder; use the same method to get SrF 2 -ErF 3 (5 wt.%), SrF 2 -ErF 3 (10 wt.%) Mixed powder.

[0037] 2) The forming process of the composite structure blank: 0.5 g SrF is loaded into the stainless steel mold 2 Powder, apply a pressure of 5MPa to the steel mold, hold the pressure for 10 minutes; put 0.5 g of SrF into the mold 2 -ErF 3 (2 wt.%) Mix the powder, apply a pressure of 5MPa to the steel mold, and hold the pressure for 10 minutes; put 0.5 g of SrF in...

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Abstract

The invention discloses a preparation method for a strontium fluoride optical material with a composite structure. The preparation method comprises the following specific steps: 1) synthesizing pure strontium fluoride (SrF2) powder by adopting a chemical precipitation method, and mixing the SrF2 powder with rare earth fluoride ReF3 powder; 2) carrying out primary molding on obtained mixed powder,and carrying out isostatic cool pressing treatment so as to obtain a green body with a composite structure; 3) putting the green body into a mold, and putting the mold into a vacuum furnace for pressurization sintering; and 4) after sintering is finished, taking a sample out of the vacuum furnace, and carrying out polishing treatment so as to obtain the strontium fluoride optical material with thecomposite structure. Compared with a conventional single-structure strontium fluoride optical material in which components including strontium fluoride crystals and ceramics are uniformly distributed, the strontium fluoride optical material with the composite structure provided by the invention has the following advantages: through the design of the composite structure, the thermal conductivity of the optical material can be improved; generated heat can be conducted out of the body more quickly in laser application; the thermal effect of the optical material is relieved; and the strontium fluoride optical material is more competitive in application in the fields of high-power laser technology and the like.

Description

Technical field [0001] The invention relates to the field of optical material preparation, in particular to a method for preparing a composite structure strontium fluoride optical material using strontium fluoride and rare earth fluoride powder as raw materials, forming a green body with a composite structure, and using vacuum sintering technology. Background technique [0002] Strontium fluoride (SrF 2 ) The material belongs to the cubic crystal system and has the advantages of wide light transmission range, low phonon energy and low refractive index. It is a class of optical materials with excellent performance. SrF 2 The lattice structure contains abundant void locations, allowing high concentration doping of rare earth ions. Rare earth doped SrF 2 Crystal and ceramic optical materials have excellent optical properties and are of important application value in all solid-state lasers. [0003] As one of the core components of all-solid-state lasers, the performance of laser mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/553C04B35/622H01S3/16
CPCC04B35/553C04B35/622H01S3/165H01S3/1685C04B2235/445
Inventor 刘作冬王雨晴纪瑜萌徐春燕刘洋于永生刘鹏井强山
Owner XINYANG NORMAL UNIVERSITY
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