Nd-sensitized yttrium oxide-based laser ceramic and preparation method thereof

A technology of laser ceramics and yttrium oxide, which is applied in the field of material science, can solve problems such as error and loss, and achieve the effect of good sintering activity and good luminous performance

Active Publication Date: 2017-06-13
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the strong directionality of the laser, any small refr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: (Y 0.84 Nd 0.08 Er 0.08 ) 2 o 3 -0.01(Y 0.95 La 0.05 ) 2 o 3 (x=0.08, y=0.08, z=0.05, M=Er, N=La)

[0026] Weigh 0.84 mol of yttrium nitrate, 0.08 mol of neodymium nitrate, and 0.08 mol of erbium nitrate into deionized water and mix evenly, then use zirconia balls as the grinding medium, ball mill and mix for 4 hours, dry and then calcinate at 1550 °C for 2 hours , get (Y,Nd,Er) 2 o 3 phase powder. Weigh 0.0095 mol of yttrium nitrate and 0.0005 mol of lanthanum nitrate into deionized water and mix evenly, then add the above synthesized (Y, Nd, Er) 2 o 3 phase powder, ball milled for 4 hours, and then the mixture was spray-dried to remove deionized water. Put the powder obtained after spray drying into a mold, shape it under a pressure of 10 MPa, then heat it up to 1050 °C for 4 hours, put it into an isostatic press after cooling, and perform isostatic pressing at 300 MPa; The isostatic pressed product was placed in a vacuum furnace, kept at 1...

Embodiment 2

[0027] Embodiment 2: (Y 0.985 Nd 0.01 Dy 0.005 ) 2 o 3 -0.2(Y 0.88 La 0.09 Zr 0.03 ) 2 o 3 (x=0.01, y=0.005, z=0.12, M=Dy, N=La, Zr)

[0028] Weigh 0.45 mol of yttrium oxide, 0.085 mol of yttrium nitrate, 0.01 mol of neodymium nitrate, and 0.005 mol of dysprosium acetate into deionized water and mix evenly, then use zirconia balls as the grinding medium, ball mill and mix for 24 hours, and then dry Calcined at 1250 °C for 8 hours to obtain (Y, Nd, Dy) 2 o 3 phase powder. Weigh 0.176 mol of yttrium nitrate, 0.018 mol of lanthanum nitrate, and 0.006 mol of zirconium nitrate into deionized water and mix evenly, then use zirconia balls as the grinding medium, ball mill and mix for 24 hours, dry and then calcinate at 1050 °C for 1 hour , get (Y,La,Zr) 2 o 3 phase powder. The above-prepared (Y, Nd, Dy) 2 o 3 Phase powder and (Y,La,Zr) 2 o 3 Mix the phase powders, put them into a ball mill jar, use zirconia balls as the grinding medium, and ball mill and mix for 24...

Embodiment 3

[0029] Embodiment 3: (Y 0.8 Nd 0.1 Er 0.1 ) 2 o 3 -0.1(Y 0.8 La 0.1 Ti 0.05 Al 0.05 ) 2 o 3 (x=0.1, y=0.1, z=0.2, M=Er, N=La,Ti,Al)

[0030] Weigh 0.25 mol of yttrium oxide, 0.15 mol of yttrium nitrate, 0.15 mol of yttrium acetate, 0.1 mol of neodymium nitrate, and 0.1 mol of erbium acetate, put them into deionized water and mix them evenly, then use zirconia balls as the grinding medium, and ball mill and mix 12 hours, dried and then calcined at 1500 °C for 6 hours to obtain (Y, Nd, Er) 2 o 3 phase powder. Weigh 0.04 mol of yttrium nitrate, 0.04 mol of yttrium acetate, 0.01 mol of lanthanum acetate, 0.005 mol of tetrabutyl titanate, and 0.005 mol of aluminum nitrate into deionized water and mix well, then add the above synthesized (Y, Nd, Er) 2 o 3 phase powder, ball milled for 12 hours, and then the mixture was spray-dried to remove deionized water. Put the powder obtained after spray drying into a mold, shape it under a pressure of 20 MPa, then heat it up to...

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Abstract

The invention discloses Nd-sensitized yttrium oxide-based laser ceramic. Each crystal particle of the laser ceramic is provided with a core-shell structure, a core layer is a (Y,Nd,M)2O3 phase, a shell layer is a (Y,N)2O3 phase, wherein M is rare earth luminescent ions, and N is a sintering aid. A preparation process comprises the following steps: firstly mixing a yttrium compound, a neodymium compound and an M compound, calcining to obtain (Y,Nd,M)2O3 powder, then mixing the yttrium compound with the N compound, calcining to obtain (Y, N)2O3 powder, and then mixing the two powders; or mixing the yttrium compound with the N compound, then directly adding the (Y,Nd,M)2O3 powder, mixing and calcining; carrying out isostatic pressing on the obtained mixed powder, carrying out vacuum sintering, cooling, and then annealing. The laser ceramic disclosed by the invention has the advantages that a (Y,N)2O3 thin layer with excellent sintering property is utilized for coating the (Y,Nd,M)2O3 phase, and the lattice distortion is reduced on the basis of improving the sintering property of the ceramic, so that excellent laser performance is obtained.

Description

technical field [0001] The invention relates to a yttrium oxide-based laser ceramic and a preparation method thereof, in particular to an Nd-sensitized yttrium oxide-based laser ceramic and a preparation method thereof, and belongs to the field of material science and technology. Background technique [0002] Yttrium oxide is a cubic crystal with excellent light transmission properties, and has the advantages of high melting point, good chemical and photochemical stability, high thermal conductivity, and wide range of optical transparency (0.23-8.0 μm), especially in the infrared region, with a theoretical transmittance of more than 80%; its phonon energy is low, and it is easy to realize the doping modification of rare earth ions, which can suppress the non-radiative transition to a certain extent, increase the probability of radiative transition, and thereby improve the quantum efficiency of luminescence. As an important matrix material for solid-state laser dielectric mat...

Claims

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Application Information

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IPC IPC(8): C04B35/505C04B35/628C04B35/626
CPCC04B35/505C04B35/62615C04B35/62815C04B35/62892C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3224C04B2235/3227C04B2235/3244C04B2235/3262C04B2235/3284
Inventor 王焕平雷若姗李银艳杨清华徐时清黄立辉
Owner CHINA JILIANG UNIV
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