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Preparation method of Nd-YVO4 transparent laser ceramic material

A technology for laser ceramics and laser materials, applied in the field of material metallurgy, can solve the problems of difficult to increase the doping concentration of single crystal materials, low manufacturing cycle and cost, difficult preparation, etc., and achieve easy control of process flow, wide application range, and raw material preparation. simple effect

Inactive Publication Date: 2013-04-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to provide a kind of Nd:YVO 4 The preparation method of transparent laser ceramic materials can increase the content of rare earth elements in the material, prepare larger-sized transparent ceramics, and the manufacturing cycle and cost are relatively low. Difficulty in size preparation and other issues, so that the comprehensive performance of the material is improved

Method used

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  • Preparation method of Nd-YVO4 transparent laser ceramic material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare yttrium oxide (Y 2 o 3 ) powder and vanadium oxide (V 2 o 5 ) powder, adding a total of 2% neodymium oxide (Nd 2 o 3 ) powder (molar percentage), the magnesium oxide (MgO) powder (molar percentage) of 0.01% of the total amount, 0.01% (mass percentage) of the total amount of high-purity TEOS, put into the polytetrafluoroethylene ball mill tank, add dehydrated alcohol And corundum ceramic balls, rotating speed 800rad / min, ball milling for 6 hours. Take it out and dry it in an oven, grind it through a 200-mesh sieve. Use a 100MPa pressure shaft to pressurize in one direction, press it into a disc with a diameter of 12-18mm, and press it further in a cold isostatic pressing device with a pressure of 300MPa. Put into vacuum sintering furnace for pretreatment, vacuum degree 10 -3 Pa, the pretreatment temperature is 800 degrees, and the holding time is 5 hours. On the basis of pretreatment, further vacuumize, the vacuum degree is less than 10 -3 Pa, the heatin...

Embodiment 2

[0022] Preparation of YVO by wet chemical method 4 powder and neodymium oxide (Nd 2 o 3 ) powder, sodium oxide (Na 2 (O) a mixture of powders, wherein the neodymium oxide content is 3% (mol percent) of the total amount, sodium oxide (Na 2 O) powder content (molar percentage) is 0.005% of total amount, adds 0.01% (mass percentage) high-purity TEOS of total amount, puts into polytetrafluoroethylene ball mill jar, adds dehydrated alcohol and corundum ceramic ball, rotating speed 1000rad / min, ball mill 8 hours. Take it out and evaporate it to dryness with an evaporator, and grind it through a 200-mesh sieve. Use a pressure axis of 100MPa to pressurize in one direction, and further press in a cold isostatic pressing device with a pressure of 400MPa. Put into vacuum sintering furnace for pretreatment, vacuum degree 10 -3 Pa, the pretreatment temperature is 900 degrees, and the holding time is 6 hours. On the basis of pretreatment, further vacuumize, the vacuum degree is less...

Embodiment 3

[0024] Yttrium oxide (Yttria) was prepared by wet chemical method 2 o 3 ) powder, neodymium oxide (Nd 2 o 3 ) powder, magnesium oxide (MgO) powder and vanadium oxide (V 2 o 5 ) powder mixture, in which yttrium oxide (Y 2 o 3 ) powder and vanadium oxide (V 2 o 5 ) in a molar ratio of 1:1, the neodymium oxide content is 5% (molar percentage) of the total amount, the magnesium oxide (MgO) content (molar percentage) is 0.005% of the total amount, and 0.015% (mass percentage) of the total amount is added ) of high-purity TEOS was put into a polytetrafluoroethylene ball mill jar, adding absolute ethanol and corundum ceramic balls, and ball milled for 16 hours at a speed of 1200 rad / min. Take it out and evaporate it to dryness with an evaporator, and grind it through a 200-mesh sieve. Use a 100MPa pressure shaft to pressurize in one direction, and further press in a cold isostatic pressing device with a pressure of 350MPa. Put into vacuum sintering furnace for pretreatment,...

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Abstract

The invention relates to a transparent laser ceramic material, in particular to a preparation method of Nd:YVO4 transparent laser ceramic material, belonging to the technical field of an inorganic non-metallic material. The method comprises the following steps of: mixing the raw materials for preparing neodymium-doped yttrium vanadate laser material according to the proportion, grinding, sieving by 200 meshes after drying processing, pressing into bisque; carrying out vacuum sintering to the bisque with the vacuum degree of less than 10<-3>Pa, temperature-rising speed of 2 to 10 DEG C for every minute, sintering temperature of 1500 to 2000 DEG C and insulating time of 4 to 50 hours; and sintering ingot blanks, cooling with a furnace, annealing, carrying out planar processing after being taken out, and obtaining the transparent laser Nd:YVO4 ceramics after precisely polishing. The invention can improve the content of the rare soil element in the material, can prepare transparent ceramic with larger size, has shorter preparing period and lower cost, and better solves the problems that the doping concentration of single-crystal material is hard to be improved, the preparation with larger size is difficult and the like, thus leading the comprehensive performance of the material to be improved.

Description

technical field [0001] The present invention relates to a kind of transparent laser ceramic material, especially a kind of Nd:YVO 4 The invention discloses a preparation method of a transparent laser ceramic material, which belongs to the technical field of material metallurgy. Background technique [0002] Yttrium vanadate (YVO 4 ) is usually a crystal grown by the pulling method, which has good mechanical and physical properties. Because of its wide transmission band and large birefringence, it is an ideal material for making optical polarization components. In many practical aspects Alternative to calcite (CaCO 3 ) and rutile (TiO 2 ) to make fiber optic isolators, loop mirrors, displacers, Glan polarizers and other polarizing devices. And neodymium-doped yttrium vanadate (Nd:YVO 4 ) crystal is a laser host crystal with excellent performance, which is suitable for making all-solid-state lasers pumped by laser diodes (LD). The crystal has low laser threshold, high sl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B35/495C04B35/50
Inventor 冯晶陈敬超刘琳静肖冰阮进周荣
Owner KUNMING UNIV OF SCI & TECH
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