CN113045316A - Transparent ceramic material capable of absorbing ultraviolet light and preparation method thereof - Google Patents
Transparent ceramic material capable of absorbing ultraviolet light and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a transparent ceramic material capable of absorbing ultraviolet light and a preparation method thereof, wherein the transparent ceramic material capable of absorbing ultraviolet light comprises the following chemical components: y is(1.8‑x‑y)La0.2ZrxCeyO3，X is more than or equal to 0.001 and less than or equal to 0.4, and y is more than or equal to 0.001 and less than or equal to 0.1. The preparation method comprises the following steps: mixing yttrium nitrate, lanthanum oxide, zirconium nitrate, cerium oxide powder and absolute ethyl alcohol, ball-milling, drying, primary sieving, presintering, secondary sieving, molding, sintering and annealing heat treatment to obtain the transparent ceramic. The invention takes yttria as a main body, lanthanum oxide, zirconium nitrate and cerium oxide powder are added simultaneously in a small amount, the three additive materials can absorb ultraviolet rays to the maximum extent, the transmittance in a visible light wave band is up to 74.6%, the transmittance under 380nm is 0.74%, and the invention plays a role in promoting sintering in the sintering process of the transparent ceramic capable of absorbing ultraviolet rays.
Description
Technical Field
The invention relates to a transparent ceramic material capable of absorbing ultraviolet light and a preparation method thereof, belongs to the technical field of preparation of transparent ceramics, and is suitable for window materials capable of absorbing ultraviolet light.
Background
The sunlight contains a small amount of ultraviolet light, which can be divided into UVC (100-280nm), UVB (280-320nm) and UVA (320-400nm) according to the wavelength, and most of the materials for absorbing the ultraviolet light reported at present are glass materials, such as dried silica SiO mentioned in the Chinese patent CN 101708954B in 20092And other auxiliary materials are added with ferric oxide Fe2O3And cerium oxide CeO2The prepared blue transparent glass which absorbs ultraviolet rays and infrared rays; as CeO as described in patent CN103864301A2、Fe2O3、TiO2、La2O3、Bi2O3Five oxides are combined together to prepare the ultraviolet absorbing glass prepared by the additive. However, the mechanical properties of glass materials are generally low, and the mechanical strength of transparent ceramics is much higher than that of glass. Therefore, it is necessary to develop a transparent ceramic that can absorb ultraviolet light.
At present, the ultraviolet absorption research on transparent ceramics in China is less. 2015 Xin Liu et al [ Liu X, Wang H, Tu B, et al. novel differential atmospheric porous MgAlON transparent ceramic for short wave ultra porous windows [ J].Scripta Materialia,2015,105:30-33.]By solid-phase sintering and vacuum firingEu is prepared by junction technology2+MgAlON transparent ceramic is doped, but the transparent ceramic has low absorptivity to ultraviolet light, and the ultraviolet light of UVA wave band can not be absorbed at the cut-off wavelength of 320 nm.
Disclosure of Invention
The yttrium oxide transparent ceramic has high melting point, wide band gap, wide light-transmitting wave band and good chemical and photochemical stability, but the traditional Y is2O3The cut-off wavelength of the material is about 200-290nm, and the material cannot form a shielding effect on light in an ultraviolet band. In order to solve the above problems, the present invention provides a transparent ceramic with high visible light transmittance and capable of absorbing ultraviolet light, which develops a new performance for the fields of transparent ceramic information detection, laser medium, high temperature window and high refractive index.
In a first aspect, the present invention provides a transparent ceramic material that absorbs ultraviolet light. The chemical composition of the transparent ceramic material capable of absorbing ultraviolet light is Y(1.8-x-y)La0.2ZrxCeyO3Wherein x is more than or equal to 0.001 and less than or equal to 0.4, y is more than or equal to 0.001 and less than or equal to 0.1, the ultraviolet light absorbing transparent ceramic material has an absorption effect on light with a wavelength of less than 380nm, the light transmittance under 600nm can reach 74.6%, and the transmittance under 1100nm can reach 77.9%.
If Zr is insufficient or excessive, the visible light transmittance and the ultraviolet ray absorption property are deteriorated. If Ce is insufficient, the transmittance is slightly improved, but the ultraviolet absorption performance is reduced; if Ce is excessive, the ultraviolet absorption property is substantially unchanged, but the transmittance is seriously decreased.
In a second aspect, the invention provides a preparation method of the transparent ceramic material powder capable of absorbing ultraviolet light, which comprises the steps of preparing an yttrium source, a lanthanum source, a zirconium source and a cerium source according to a stoichiometric ratio, ball-milling, drying, primary sieving, heat treatment and secondary sieving to obtain the transparent ceramic material powder capable of absorbing ultraviolet light.
Preferably, the yttrium source is at least one of yttrium nitrate, yttrium oxide and yttrium acetate; the lanthanum source is at least one of lanthanum oxide, lanthanum nitrate and lanthanum acetate; the zirconium source is at least one of zirconium nitrate, zirconium oxide and zirconium acetate; the cerium source is at least one of cerium oxide, cerium nitrate and cerium acetate.
Preferably, the rotation speed of the ball milling is 250-300 r/min, and the ball milling time is 24-30 hours.
Preferably, the drying temperature is 55-80 ℃, and the drying time is 24-36 hours.
Preferably, the first sieving is 80-120 mesh sieving, and the second sieving is 160-200 mesh sieving; preferably, the powder is sieved twice each time to obtain the transparent ceramic material powder which has proper particle size and is uniform and can absorb ultraviolet light.
Preferably, the temperature of the heat treatment is 1200-1400 ℃, and the heat preservation time is 2-4 hours.
In a third aspect, the present invention provides a method for preparing the above transparent ceramic material capable of absorbing ultraviolet light, including: forming the transparent ceramic material powder capable of absorbing ultraviolet light to obtain Y(1.8-x-y)La0.2ZrxCeyO3Biscuit; and sintering the biscuit and then annealing to obtain the transparent ceramic capable of absorbing ultraviolet light.
Preferably, the forming comprises: and (3) carrying out dry pressing and pressure maintaining on the transparent ceramic powder capable of absorbing the ultraviolet light for 30-60 seconds under the pressure of 5-30MPa, and carrying out cold isostatic pressing treatment for 3-5 minutes under the pressure of 200-250MPa to obtain a transparent ceramic biscuit capable of absorbing the ultraviolet light.
Preferably, the sintering comprises: presintering in a high temperature furnace at 1200-1400 ℃ for 2-7 hours; then the vacuum degree is 1X 10-3-9×10-3Sintering for 10-20 hours under vacuum condition.
Preferably, the annealing is performed by heat preservation at 1350-.
Has the advantages that:
1. the transparent ceramic capable of absorbing ultraviolet light provided by the invention has the cut-off wavelength of 380nm at the absorption waveband and the transmittance of 12.5% at 390nm, and effectively blocks the ultraviolet light.
2. The transmittance in the visible light region was not reduced. The transmittance at 1100nm was 77.9%, and the transmittance at 600nm was 74.6%.
3. The preparation process is simple and easy to operate and produce.
Drawings
FIG. 1 is an X-ray diffraction pattern of the UV-light absorbing transparent ceramic materials prepared in examples 1-6 of the present invention.
FIG. 2 is a schematic diagram of the UV-absorbing transparent ceramic material prepared in examples 1-6 according to the present invention, which is polished to a thickness of 1.8mm on both sides.
Fig. 3 shows transmittance curves of the uv-absorbing transparent ceramic materials prepared in examples 1 to 6 after double-side polishing.
Detailed Description
The present invention is further described below in conjunction with the following embodiments, which are intended to illustrate and not to limit the present invention.
The following exemplary description is directed to a method of preparing a transparent ceramic material powder, comprising:
preparing materials: according to (Y)(1.8-x-y)La0.2ZrxCeyO3X is more than or equal to 0.001 and less than or equal to 0.4, and y is more than or equal to 0.001 and less than 0.1) respectively weighing yttrium source, lanthanum source, zirconium source and cerium source. As a detailed example, the yttrium source, lanthanum source, zirconium source, and cerium source are yttrium nitrate, lanthanum oxide, zirconium nitrate, and cerium oxide, respectively.
Ball milling: the ball milling process condition is that the ball milling is carried out for 24-30 hours under the conditions of 250-300 r/min. As a detailed example, zirconium ball milling may be used, and the mass ratio of the powder to the milling balls and the absolute ethyl alcohol is 1:5: 0.9.
And (3) drying: the drying condition is drying in a drying oven at 55-80 ℃ for 24-36 hours.
Sieving: sieving the dried powder twice with a sieve of 80-120 meshes.
And (3) heat treatment: the heat treatment is heat preservation for 4 hours at 1200-1400 ℃.
Sieving: and (3) sieving the heat-treated powder for the second time, wherein the sieve mesh can be 160-200 meshes, and the powder is sieved twice to obtain the transparent ceramic material powder with proper particle size and uniformity and capable of absorbing ultraviolet light.
The following exemplarily illustrates a preparation method of the transparent ceramic material, including:
molding: pressurizing the two sides of the transparent ceramic material powder capable of absorbing ultraviolet light under the pressure of 5-30MPa and keeping the pressure for 30 seconds to form a biscuit, and then carrying out cold isostatic pressing treatment on the biscuit obtained by dry pressing under the pressure of 200-250MPa for 3-5 minutes to make the biscuit more compact.
And (3) vacuum sintering: the biscuit pre-sintering temperature is basically the same as the powder pre-sintering temperature, and the transparent ceramic biscuit capable of absorbing ultraviolet light is pre-sintered for 4 hours in a high-temperature furnace at 1200-1400 ℃. Then the vacuum degree is 1X 10-3Sintering for 10-20 hours under vacuum condition.
Annealing: and (3) placing the sintered sample of the transparent ceramic capable of absorbing ultraviolet light in air, and preserving the temperature for 5 hours at 1400 ℃.
Ultraviolet light absorption evaluation experiment: after the prepared sample is subjected to transmittance test in the range of 190-1100nm by a spectrometer, the obtained sample has the transmittance of 0.74% at 380nm and a good ultraviolet light absorption effect.
Evaluation experiment of visible light transmittance: after the prepared sample is subjected to transmittance test in the range of 190-1100nm by a spectrometer, the obtained sample has the transmittance of 74.6% at 600nm and better visible light transmittance.
Compared with the prior art, the ultraviolet light-absorbing transparent ceramic material provided by the invention has a good ultraviolet light absorption effect, and is superior to the traditional Y2O3The transparent ceramic provided by the invention has the advantages that the cut-off wavelength of light is reduced to about 380nm, meanwhile, the visible light transmittance of the transparent ceramic capable of absorbing ultraviolet light is higher, the transmittance at 1100nm reaches about 78%, the transmittance at 600nm reaches more than 74.6%, and meanwhile, the sintering density is high, so that the application requirements in the fields of wave-absorbing windows, high-temperature windows and the like can be met.
The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art in light of the foregoing description are intended to be included within the scope of the invention.
Example 1
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3Each stoichiometric ratio (molar ratio) was dissolved in an appropriate amount of absolute ethanol (where x is 0.02 and y is 0.008, i.e., the amount of doped zirconium was 1 at% and the amount of doped cerium was 0.4 at%), and the mass ratio of the powder to absolute ethanol was 10: 9. Placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, ball-milling for 25 hours at 260 revolutions per minute, and drying the ball-milled slurry for 26 hours in a drying oven at 60 ℃. And (4) sieving the dried powder twice with a 100-mesh sieve, and then carrying out heat treatment on the sieved powder. The heat treatment conditions are as follows: the temperature was maintained at 1200 ℃ for 2 hours. And (4) sieving the heat-treated powder twice with a sieve mesh of 160 meshes to obtain the uniform transparent ceramic material powder with proper particle size and capable of absorbing ultraviolet light.
Molding: and (3) obtaining the transparent ceramic material biscuit capable of absorbing ultraviolet light by adopting dry pressure of 10MPa and keeping the pressure for 35 seconds and combining a cold isostatic pressing process of 200MPa and keeping the pressure for 3 minutes.
And (3) sintering: and pre-burning the formed transparent ceramic biscuit capable of absorbing ultraviolet light for 2 hours in a high-temperature furnace at 1200 ℃. Then the mixture is passed through a temperature of 1860 ℃ and a vacuum degree of 4X 10-3Sintering for 10 hours under vacuum condition.
Annealing heat treatment: the vacuum sintered sample is kept in a high temperature furnace at 1350 ℃ for 5 hours to obtain (Y)1.772La0.2Zr0.02Ce0.008O3) Transparent ceramic material capable of absorbing ultraviolet light.
The final obtained transparent ceramic material capable of absorbing ultraviolet light has a cutoff wavelength of 363nm for ultraviolet light absorption and a transmittance of 75.9% under visible light 600 nm.
Example 2
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3The stoichiometric ratio (molar ratio) was dissolved in an appropriate amount of absolute ethanol (where x is 0.02 and y is 0.012, i.e. the amount of doped zirconium was 1 at% and the amount of doped cerium was 0.6 at%), and the mass ratio of the powder to absolute ethanol was 10: 9. Placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, ball-milling for 26 hours at 270 rpm, and drying the ball-milled slurry for 28 hours in a drying oven at 65 ℃. And (4) sieving the dried powder twice with a 120-mesh sieve, and then carrying out heat treatment on the sieved powder. The heat treatment conditions are preferably: the temperature was maintained at 1200 ℃ for 2 hours. And (4) sieving the heat-treated powder twice with a sieve mesh of 180 meshes to obtain the uniform transparent ceramic material powder with proper particle size and capable of absorbing ultraviolet light.
Molding: adopting dry pressure of 15MPa, maintaining the pressure for 40 seconds, and combining a cold isostatic pressing process of 200MPa maintaining the pressure for 3 minutes to obtain the ultraviolet light-absorbable (Y)1.768La0.2Zr0.02Ce0.012O3) A transparent ceramic biscuit.
And (3) sintering: and pre-burning the formed transparent ceramic biscuit capable of absorbing ultraviolet light in a high-temperature furnace at 1300 ℃ for 3 hours. Then the mixture is passed through a temperature of 1860 ℃ and a vacuum degree of 3X 10-3Sintering for 16 hours under vacuum condition.
Annealing heat treatment: the vacuum sintered sample is kept in a high temperature furnace at 1370 ℃ for 6 hours to obtain (Y)1.768La0.2Zr0.02Ce0.012O3) Transparent ceramic material capable of absorbing ultraviolet light.
The final obtained transparent ceramic material capable of absorbing ultraviolet light has a cutoff wavelength of 367nm for ultraviolet light absorption and a transmittance of 75.0% under visible light 600 nm.
Example 3
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3Dissolving stoichiometric ratio (mol ratio) in appropriate amount of anhydrous ethanol (wherein x is 0.02, y is 0.016, i.e. the doping amount of zirconium is 1 at%, and the doping amount of cerium is 0.8 at%), and mixing the above powder with anhydrous ethanolThe ratio is 10: 9. Placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, ball-milling for 27 hours at 280 revolutions per minute, and drying the ball-milled slurry in a drying oven at 70 ℃ for 30 hours. And (4) sieving the dried powder twice with a 120-mesh sieve, and then carrying out heat treatment on the sieved powder. The heat treatment conditions are preferably: incubate at 1400 ℃ for 4 hours. And (4) sieving the heat-treated powder twice with a 200-mesh sieve to obtain the transparent ceramic material powder with proper and uniform particle size.
Molding: the ultraviolet light absorbable (Y) is obtained by adopting dry pressure of 20MPa and pressure maintaining for 45 seconds and combining a cold isostatic pressing process of 250MPa and pressure maintaining for 5 minutes1.764La0.2Zr0.02Ce0.016O3) A transparent ceramic material biscuit capable of absorbing ultraviolet light.
And (3) sintering: and pre-burning the formed transparent ceramic biscuit capable of absorbing ultraviolet light for 4 hours in a high-temperature furnace at 1400 ℃. Then the temperature is 1860 ℃, the vacuum degree is 2 multiplied by 10-3Sintering for 20 hours under vacuum condition.
Annealing heat treatment: keeping the vacuum sintered sample in a high-temperature furnace at 1390 ℃ for 7 hours to obtain (Y)1.764La0.2Zr0.02Ce0.016O3) Transparent ceramic material capable of absorbing ultraviolet light.
The cut-off wavelength of the finally obtained transparent ceramic material capable of absorbing ultraviolet light on ultraviolet light absorption is 370nm, and the transmittance under the visible light 600nm is 73.7%.
Example 4
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3The stoichiometric ratio (molar ratio) is dissolved in an appropriate amount of absolute ethyl alcohol (wherein x is 0.02, y is 0.02, namely the doping amount of zirconium is 1 at%, and the doping amount of cerium is 1 at%), and the mass ratio of the powder to the absolute ethyl alcohol is 10: 9. Placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, ball-milling for 28 hours at 290 revolutions per minute, and drying the ball-milled slurry in a drying oven at 75 ℃ for 32 hours. Drying the powderSieving twice with 120 mesh sieve, and performing heat treatment on the sieved powder. The heat treatment conditions are preferably: incubate at 1400 ℃ for 4 hours. And (4) sieving the heat-treated powder twice with a 200-mesh sieve to obtain the transparent ceramic material powder with proper and uniform particle size.
Molding: adopting dry pressure of 25MPa, maintaining the pressure for 50 seconds and combining a cold isostatic pressing process of 250MPa, maintaining the pressure for 5 minutes to obtain the ultraviolet light-absorbable (Y)1.76La0.2Zr0.02Ce0.02O3) A transparent ceramic material biscuit capable of absorbing ultraviolet light.
And (3) sintering: and pre-burning the formed transparent ceramic biscuit capable of absorbing ultraviolet light in a high-temperature furnace at 1500 ℃ for 5 hours. Then the temperature is 1880 ℃ and the vacuum degree is 1 multiplied by 10-3Sintering for 20 hours under vacuum condition.
Annealing heat treatment: keeping the sample after vacuum sintering in a high-temperature furnace at 1410 ℃ for 8 hours to obtain (Y)1.76La0.2Zr0.02Ce0.02O3) Transparent ceramic material capable of absorbing ultraviolet light.
The final obtained transparent ceramic material capable of absorbing ultraviolet light has a cutoff wavelength of 372nm for ultraviolet light absorption and a transmittance of 73.4% under visible light 600 nm.
Example 5
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3The molar ratio of each atom (where x is 0.02 and y is 0.06, i.e., the amount of doped zirconium is 1 at% and the amount of doped cerium is 3 at%) was dissolved in an appropriate amount of absolute ethanol, where the mass ratio of the powder to the absolute ethanol was 10: 9. And placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, ball-milling for 30 hours at 300 revolutions per minute, and drying the ball-milled slurry for 36 hours in a drying oven at 80 ℃. And (4) sieving the dried powder twice with a 120-mesh sieve, and then carrying out heat treatment on the sieved powder. The heat treatment conditions are preferably: incubate at 1400 ℃ for 4 hours. Sieving the heat-treated powder twice with a 200 mesh sieve to obtain a powder with a proper particle sizeA transparent ceramic material powder.
Molding: the ultraviolet light absorbable (Y) is obtained by adopting dry pressure of 30MPa and pressure maintaining for 60 seconds and combining a cold isostatic pressing process of 250MPa and pressure maintaining for 5 minutes1.72La0.2Zr0.02Ce0.06O3) A transparent ceramic material biscuit capable of absorbing ultraviolet light.
And (3) sintering: and pre-burning the formed transparent ceramic biscuit capable of absorbing ultraviolet light in a high-temperature furnace at 1600 ℃ for 6 hours. Then passing through a vacuum chamber at 1900 deg.C and 1X 10-3Sintering for 20 hours under vacuum condition.
Annealing heat treatment: the vacuum sintered sample is kept in a high temperature furnace at 1430 ℃ for 9 hours to obtain (Y)1.72La0.2Zr0.02Ce0.06O3) Transparent ceramic material capable of absorbing ultraviolet light.
The final obtained transparent ceramic material capable of absorbing ultraviolet light has a cutoff wavelength of 380nm for ultraviolet light absorption, and the transmittance under visible light 600nm is 74.6%.
Fig. 1 shows X-ray diffraction patterns of the transparent uv-absorbing ceramic materials prepared in comparative example 1 and examples 1 to 5, and it can be seen from fig. 1 that the transparent uv-absorbing ceramic materials prepared exhibit a single yttria structure.
Fig. 2 is a schematic diagram showing the ultraviolet light absorbing transparent ceramic materials prepared in comparative example 1 and examples 1 to 5, which are polished on both sides to have a thickness of 1.8mm, and it can be seen from fig. 2 that the prepared ultraviolet light absorbing transparent ceramic materials are transparent and characters under the sample can be clearly seen.
Fig. 3 shows transmittance curves of the ultraviolet light-absorbable transparent ceramic materials prepared in comparative example 1 and examples 1 to 5 after double-side polishing, and it can be seen from fig. 3 that, when the amount of cerium doped is 0 at%, the transmittance of the sample at 1100nm is 79.4%, the transmittance of the sample slightly decreases as the cerium concentration increases, the transmittance at 1100nm is substantially maintained at 77% or more, and the cut-off wavelength of the sample gradually shifts to red as the cerium concentration increases. At a cerium concentration of 3%, the sample has a transmittance of 0.74% at 380nm, effectively cutting off the ultraviolet light. Therefore, the transparent ceramic after the cerium oxide is added in the examples has a significant ultraviolet light absorbing effect, compared to comparative example 1.
Comparative example 1
Preparing powder: weighing yttrium nitrate, lanthanum oxide, zirconium nitrate and cerium oxide according to Y(1.8-x-y)La0.2ZrxCeyO3The molar ratio of each atom (where x is 0.02 and y is 0, i.e., the amount of doped zirconium is 1 at% and the amount of doped cerium is 0 at%) was dissolved in an appropriate amount of absolute ethanol, where the mass ratio of the powder to the absolute ethanol was 10: 9. And (3) placing the mixture of the powder and absolute ethyl alcohol in a planetary ball mill, carrying out ball milling for 24 hours at 250 revolutions per minute, and drying the ball-milled slurry for 24 hours in a drying oven at 55 ℃. And (4) sieving the dried powder twice with a 80-mesh sieve, and then carrying out heat treatment on the sieved powder. The heat treatment conditions are preferably: the temperature was maintained at 1200 ℃ for 2 hours. And (4) sieving the heat-treated powder twice with a 200-mesh sieve to obtain the transparent ceramic material powder with proper and uniform particle size.
Molding: and (3) obtaining a transparent ceramic material biscuit by adopting dry pressure of 5MPa and keeping the pressure for 30 seconds and combining a cold isostatic pressing process of 200MPa and keeping the pressure for 3 minutes.
And (3) sintering: and pre-sintering the formed transparent ceramic biscuit in a high-temperature furnace at 1100 ℃ for 4 hours. Then passing through a vacuum chamber at 1800 deg.C and 5X 10-3Sintering for 10 hours under vacuum condition.
Annealing heat treatment: the sample after vacuum sintering is kept in a high temperature furnace at 1450 ℃ for 10 hours to obtain (Y)1.78La0.2Zr0.02O3) A transparent ceramic material.
Claims (9)
1. The transparent ceramic material capable of absorbing ultraviolet light is characterized in that the chemical composition of the transparent ceramic material capable of absorbing ultraviolet light is Y(1.8-x-y)La0.2ZrxCeyO3Wherein x is more than or equal to 0.001 and less than or equal to 0.4, and y is more than or equal to 0.001 and less than 0.1; preferably, the ultraviolet light-absorbing transparent ceramic material has the absorption effect on light with the wavelength of 380nm or less and the transmission effect at 600nmThe light rate can reach 74.6%, and the transmittance under 1100nm can reach 77.9%.
2. The method for preparing the ultraviolet light absorbing transparent ceramic material powder according to claim 1, comprising: preparing an yttrium source, a lanthanum source, a zirconium source and a cerium source according to a stoichiometric ratio, and then performing ball milling, drying, primary screening, heat treatment and secondary screening to obtain the transparent ceramic material powder capable of absorbing ultraviolet light.
3. The method according to claim 2, wherein the yttrium source is at least one of yttrium nitrate, yttrium oxide, yttrium acetate; the lanthanum source is at least one of lanthanum oxide, lanthanum nitrate and lanthanum acetate; the zirconium source is at least one of zirconium nitrate, zirconium oxide and zirconium acetate; the cerium source is at least one of cerium oxide, cerium nitrate and cerium acetate.
4. The method according to claim 2 or 3, wherein the first sieving is 80-120 mesh sieving, and the second sieving is 160-200 mesh sieving.
5. The method according to claim 2 or 3, wherein the temperature of the heat treatment is 1200 ℃ and 1400 ℃, and the holding time is 2-4 hours.
6. A method for preparing the ultraviolet light absorbing transparent ceramic material of claim 1, comprising: forming the transparent ceramic material powder capable of absorbing ultraviolet light to obtain Y(1.8-x-y)La0.2ZrxCeyO3Biscuit; and sintering the biscuit and then annealing to obtain the transparent ceramic capable of absorbing ultraviolet light.
7. The method of manufacturing according to claim 6, wherein the molding includes: and (3) carrying out dry pressing and pressure maintaining on the transparent ceramic powder capable of absorbing the ultraviolet light for 30-60 seconds under the pressure of 5-30MPa, and carrying out cold isostatic pressing treatment for 3-5 minutes under the pressure of 200-250MPa to obtain a transparent ceramic biscuit capable of absorbing the ultraviolet light.
8. The production method according to claim 6 or 7, characterized in that the sintering includes: presintering in a high-temperature furnace at 1200-1400 deg.C for 2-7 hr, and vacuum degree of 1 × 10-3-9×10-3Sintering for 10-20 hours under vacuum condition.
9. The method as claimed in any one of claims 6 to 8, wherein the annealing is carried out at 1350-.
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