CN115894028B - Luminescent ceramic for alternating electric field indication and preparation method thereof - Google Patents
Luminescent ceramic for alternating electric field indication and preparation method thereof Download PDFInfo
- Publication number
- CN115894028B CN115894028B CN202211726606.4A CN202211726606A CN115894028B CN 115894028 B CN115894028 B CN 115894028B CN 202211726606 A CN202211726606 A CN 202211726606A CN 115894028 B CN115894028 B CN 115894028B
- Authority
- CN
- China
- Prior art keywords
- ceramic
- electric field
- alternating electric
- luminescent
- indication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a luminescent ceramic for indicating an alternating electric field and a preparation method thereof, wherein the chemical formula of the luminescent ceramic is (Gd) 3‑x Ce x )Al 3 (Ga 2‑y Li y )O 12 Wherein x is more than or equal to 0.02 and less than or equal to 0.08,0.02, and y is more than or equal to 0.05; the luminescent ceramic is prepared by a high-temperature solid phase method, and because a strong alternating electric field exists in a transformer substation, when the electric field acts on the polarization direction of dielectric medium in the ceramic, the ceramic generates a mechanical stretching phenomenon, the mechanical stretching of the ceramic generates an electric polarization phenomenon in the ceramic, and meanwhile, charges with opposite signs are generated on the surface of the ceramic; finally, the luminescence of the ceramic is realized. The luminescent ceramic prepared by the invention has strong weather resistance, acid resistance and alkalinity resistance, and can not generate phenomena of yellowing and hydrolysis due to sunburn and rain; the insulating property is excellent, and the decorative plate is suitable for decoration of various electrical equipment; the luminous brightness of the luminous ceramic under the action of 500-1000V/m alternating electric field can reach 20-40 cd/m 2 Avoid (keep away)The problems that the luminous intensity of the traditional light-storage luminous material is weakened along with the time extension and the luminous is not durable are avoided, and the potential safety hazard brought by the traditional electroluminescent indicating material is avoided.
Description
Technical Field
The invention relates to the technical field of luminescent ceramic preparation, in particular to a luminescent ceramic for alternating electric field indication and a preparation method thereof.
Background
Electroluminescent materials are materials which directly convert electric energy into light energy under the action of a direct current or alternating current electric field and by means of excitation of current and an electric field. Mechanoluminescence materials refer to a generic term for a class of materials that convert mechanical energy into light energy. There are many kinds of electroluminescent materials and mechanoluminescence materials in the market at present, but there are few kinds of luminescent indication materials which are suitable for alternating electric fields and are manufactured by combining and utilizing the performances of the two materials.
In a substation, there is often a lack of indication or even an indication, which requires additional power consumption, and which carries with it some safety risks. Because of the natural alternating electric field in the transformer substation, how to use the natural electric field, the invention of a luminous indication material is needed to be solved.
Disclosure of Invention
The invention aims to provide luminescent ceramics for alternating electric field indication.
Another object of the present invention is to provide a method for producing the luminescent ceramic for indication of alternating electric field
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in one aspect, the present invention provides a luminescent ceramic for alternating electric field indication having the formula (Gd 3-x Ce x )Al 3 (Ga 2-y Li y )O 12 Wherein x is more than or equal to 0.02 and less than or equal to 0.08,0.02, and y is more than or equal to 0.05.
On the other hand, the invention also provides a preparation method of the luminescent ceramic for alternating electric field indication, which comprises the following steps:
(1) Weighing: according to (Gd) 3-x Ce x )Al 3 (Ga 2-y Li y )O 12 The stoichiometric ratio of each element in the formula of which x is more than or equal to 0.02 and less than or equal to 0.08,0.02 and y is more than or equal to 0.05 is respectively higher than 99.99 percent of Gd 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing the weighed raw material powder in a ball milling tank, and adding a ball milling medium and absolute ethyl alcohol to perform ball milling and mixing;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying in an oven;
(4) Grinding: grinding the dried mixed powder to refine and uniformly mix the powder;
(5) Sintering: placing the ground mixture into an alumina crucible for sintering, preserving heat for 4-6 hours at 1200-1500 ℃, and then cooling to room temperature along with a furnace to obtain the luminescent ceramic.
Preferably, in the step (2), the ball milling medium is agate balls, wherein the mass ratio of the raw material powder to the ball milling medium to the absolute ethyl alcohol is 1:2 to 4:1 to 3.
Preferably, in the step (2), the ball milling rotating speed is 180-300 r/min, the ball milling time is 12-18 h, preferably, in the step (3), the drying temperature is 50-80 ℃ and the drying time is 18-30 h.
Preferably, in the step (4), the grinding time is 30-40 min.
Preferably, in the step (5), the temperature rising rate during sintering is 3-5 ℃/min.
According to the invention, the luminescent ceramic is prepared by a high-temperature solid-phase method, and because a strong alternating electric field exists in a transformer substation, when the electric field acts on the polarization direction of dielectric medium in the ceramic, the ceramic generates a mechanical stretching phenomenon, the mechanical stretching of the ceramic generates an electric polarization phenomenon in the ceramic, and meanwhile, charges with opposite signs are generated on the surface of the ceramic, so that the luminescent of the ceramic is finally realized.
Compared with the prior art, the invention has the following beneficial effects:
1.Ce 4+ for Gd 3+ Li (lithium ion battery) + For Ga 3+ The substitution of the energy storage device leads a large number of lattice defects to be generated in the ceramic, so that the traps of the energy storage in the ceramic are increased, and finally, the luminous brightness of the ceramic in an alternating electric field environment is improved. The luminescent ceramic prepared by the invention has the luminescent brightness of 20-40 cd/m under the action of 500-1000V/m alternating electric field 2 Meets the requirement of 15cd/m of luminous ceramic for daily indication 2 Is required for the brightness of the display.
2. The luminescent ceramic prepared by the invention realizes luminescence by using an alternating electric field in a transformer substation, so that the defect that the conventional light-storage luminescent indication material cannot permanently emit light is avoided, and the potential safety hazard brought by the conventional electroluminescent indication material is avoided.
3. The luminescent ceramic prepared by the preparation method provided by the invention has strong weather resistance, acid resistance and alkalinity resistance, and can not generate phenomena of yellowing and hydrolysis due to sunburn and rain; the insulating property is excellent, and the decorative plate is suitable for decoration of various electrical equipment.
Drawings
FIG. 1 is an X-ray diffraction chart of luminescent ceramics prepared in example 3 of the present invention;
FIG. 2 is a microstructure of luminescent ceramics prepared in example 3 of the present invention;
FIG. 3 is a graph showing the luminance profile of luminescent ceramics prepared in examples 1 to 4 of the present invention over 12 hours.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific examples, which should not be construed as limiting the scope of the invention.
Example 1: gd (Gd) 2.98 Ce 0.02 Al 3 Ga 1.98 Li 0.02 O 12
(1) Weighing: gd with purity more than 99.99% is respectively weighed according to stoichiometric ratio 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing 30g of the weighed raw material powder in a ball milling tank, and simultaneously adding 60g of agate balls and 30g of absolute ethyl alcohol for ball milling and mixing, wherein the ball milling speed is 180r/min, and the ball milling time is 12h;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying the slurry in a 50 ℃ oven for 18 hours;
(4) Grinding: grinding the dried mixed powder in an agate mortar for 30min to refine and uniformly mix the powder;
(5) Sintering: and (3) placing the ground mixture into an alumina crucible for sintering, preserving heat for 4 hours at 1200 ℃, and cooling to room temperature along with a furnace at a heating rate of 3 ℃/min to obtain the luminescent ceramic.
As shown in FIG. 3, the luminescent ceramic prepared in this embodiment has a luminescent brightness of 22cd/m under the action of 500V/m-1000V/m alternating electric field 2 About, the luminous ceramic 15cd/m for daily indication is satisfied 2 Is required for the brightness of the display.
Example 2: gd (Gd) 2.96 Ce 0.04 Al 3 Ga 1.97 Li 0.03 O 12
(1) Weighing: gd with purity more than 99.99% is respectively weighed according to stoichiometric ratio 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing 30g of the weighed raw material powder into a ball milling tank, and simultaneously adding 80g of agate balls and 50g of absolute ethyl alcohol for ball milling and mixing, wherein the ball milling speed is 240r/min, and the ball milling time is 15h;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying the slurry in a 60 ℃ oven for 24 hours;
(4) Grinding: grinding the dried mixed powder in an agate mortar for 35min to refine and uniformly mix the powder;
(5) Sintering: and (3) placing the ground mixture into an alumina crucible for sintering, preserving heat for 5 hours at 1300 ℃, and cooling to room temperature along with a furnace at a heating rate of 4 ℃/min to obtain the luminescent ceramic.
As shown in FIG. 3, the luminescent ceramic prepared in this embodiment has a luminescent brightness of 28cd/m under the action of 500V/m-1000V/m alternating electric field 2 About, the luminous ceramic 15cd/m for daily indication is satisfied 2 Is required for the brightness of the display.
Example 3: gd (Gd) 2.94 Ce 0.06 Al 3 Ga 1.96 Li 0.04 O 12
(1) Weighing: gd with purity more than 99.99% is respectively weighed according to stoichiometric ratio 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing 30g of the weighed raw material powder into a ball milling tank, and simultaneously adding 100g of agate balls and 60g of absolute ethyl alcohol for ball milling and mixing, wherein the ball milling speed is 240r/min, and the ball milling time is 15h;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying the slurry in an oven at 80 ℃ for 30 hours;
(4) Grinding: grinding the dried mixed powder in an agate mortar for 35min to refine and uniformly mix the powder;
(5) Sintering: and (3) placing the ground mixture into an alumina crucible for sintering, preserving heat for 6 hours at 1500 ℃, and cooling to room temperature along with a furnace at a heating rate of 5 ℃/min to obtain the luminescent ceramic.
As shown in FIG. 1, the luminescent ceramic prepared in this example was pure phase as measured by XRD.
As shown in FIG. 2, the luminescent ceramic prepared in this example was found to grow well by SEM examination.
As shown in FIG. 3, the luminescent ceramic prepared in this embodiment has a luminescent brightness of 36cd/m under the action of 500V/m-1000V/m alternating electric field 2 About, the luminous ceramic 15cd/m for daily indication is satisfied 2 Is required for the brightness of the display.
Example 4: gd (Gd) 2.92 Ce 0.08 Al 3 Ga 1.95 Li 0.05 O 12
(1) Weighing: gd with purity greater than 99.99% is weighed according to the stoichiometric ratio 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing 30g of the weighed raw material powder into a ball milling tank, and simultaneously adding 120g of agate balls and 90g of absolute ethyl alcohol for ball milling and mixing, wherein the ball milling speed is 300r/min, and the ball milling time is 18h;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying the slurry in an oven at 80 ℃ for 30 hours;
(4) Grinding: grinding the dried mixed powder in an agate mortar for 40min to refine and uniformly mix the powder;
(5) Sintering: and (3) placing the ground mixture into an alumina crucible for sintering, preserving heat for 6 hours at 1500 ℃, and cooling to room temperature along with a furnace at a heating rate of 5 ℃/min to obtain the luminescent ceramic.
As shown in FIG. 3, the luminescent ceramic prepared in this embodiment has a luminescent brightness of 28cd/m under the action of 500V/m-1000V/m alternating electric field 2 About, the luminous ceramic 15cd/m for daily indication is satisfied 2 Is required for the brightness of the display.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (7)
1. A luminescent ceramic for alternating electric field indication, characterized in that the luminescent ceramic has a chemical formula (Gd) 3- x Ce x )Al 3 (Ga 2-y Li y )O 12 Wherein x is more than or equal to 0.02 and less than or equal to 0.08,0.02, and y is more than or equal to 0.05.
2. A method of producing luminescent ceramics for indication of alternating electric field as claimed in claim 1, characterized by comprising the steps of:
(1) Weighing: according to (Gd) 3-x Ce x )Al 3 (Ga 2-y Li y )O 12 ，0.02≤x≤0.08，0.02≤0<The stoichiometric ratio of each element in y is less than or equal to 0.05, and Gd with the purity of more than 99.99 percent is respectively weighed 2 O 3 、Al 2 O 3 、Ga 2 O 3 、CeO 2 And Li (lithium) 2 CO 3 As a raw material;
(2) Mixing: placing the weighed raw material powder in a ball milling tank, and adding a ball milling medium and absolute ethyl alcohol to perform ball milling and mixing;
(3) And (3) drying: placing the ball-milled slurry into a slurry cup, and drying in an oven;
(4) Grinding: grinding the dried mixed powder to refine and uniformly mix the powder;
(5) Sintering: placing the ground mixture into an alumina crucible for sintering, preserving heat for 4-6 hours at 1200-1500 ℃, and then cooling to room temperature along with a furnace to obtain the luminescent ceramic.
3. The method for preparing luminescent ceramic for indication of alternating electric field according to claim 2, wherein in the step (2), the ball milling medium is agate balls, wherein the mass ratio of raw material powder, ball milling medium and absolute ethyl alcohol is 1:2 to 4:1 to 3.
4. The method for preparing luminescent ceramic for indication of alternating electric field according to claim 2, wherein in the step (2), the ball milling rotation speed is 180-300 r/min, and the ball milling time is 12-18 h.
5. The method for producing luminescent ceramics for indication of alternating electric field according to claim 2, wherein in the step (3), the drying temperature is 50 to 80 ℃ and the drying time is 18 to 30 hours.
6. The method of producing luminescent ceramics for indication of alternating electric field according to claim 2, wherein in the step (4), the time of grinding is 30 to 40 minutes.
7. The method for producing luminescent ceramics for indication of alternating electric field according to claim 2, wherein in step (5), the temperature rising rate at the time of sintering is 3 to 5 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211726606.4A CN115894028B (en) | 2022-12-30 | 2022-12-30 | Luminescent ceramic for alternating electric field indication and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211726606.4A CN115894028B (en) | 2022-12-30 | 2022-12-30 | Luminescent ceramic for alternating electric field indication and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115894028A CN115894028A (en) | 2023-04-04 |
| CN115894028B true CN115894028B (en) | 2023-07-14 |
Family
ID=86480985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211726606.4A Active CN115894028B (en) | 2022-12-30 | 2022-12-30 | Luminescent ceramic for alternating electric field indication and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115894028B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211135A1 (en) * | 2016-06-07 | 2017-12-14 | 深圳市绎立锐光科技开发有限公司 | Light-emitting ceramic |
| JP2019043831A (en) * | 2017-09-06 | 2019-03-22 | 宮城県 | Production method of garnet type oxide ceramics |
| CN112939592A (en) * | 2021-02-07 | 2021-06-11 | 中国科学院上海光学精密机械研究所 | Magnesium-calcium ion co-doped yttrium aluminum garnet ultrafast scintillation ceramic and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9145517B2 (en) * | 2012-04-17 | 2015-09-29 | General Electric Company | Rare earth garnet scintillator and method of making same |
| JP7260740B2 (en) * | 2018-12-07 | 2023-04-19 | 日亜化学工業株式会社 | CERAMIC COMPOSITE, LIGHT-EMITTING DEVICE USING THE SAME, AND METHOD FOR MANUFACTURING CERAMIC COMPOSITE |
-
2022
- 2022-12-30 CN CN202211726606.4A patent/CN115894028B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211135A1 (en) * | 2016-06-07 | 2017-12-14 | 深圳市绎立锐光科技开发有限公司 | Light-emitting ceramic |
| JP2019043831A (en) * | 2017-09-06 | 2019-03-22 | 宮城県 | Production method of garnet type oxide ceramics |
| CN112939592A (en) * | 2021-02-07 | 2021-06-11 | 中国科学院上海光学精密机械研究所 | Magnesium-calcium ion co-doped yttrium aluminum garnet ultrafast scintillation ceramic and preparation method thereof |
Non-Patent Citations (7)
| Title |
|---|
| Effect of Ga content on luminescence and defects formation processes in Gd3(Ga,Al)5O12:Ce single crystals;L. Grigorjeva 等;Optical Materials;第75卷;331-336 * |
| Effect of Li+ co-doping on the luminescence and defects creation processes in Gd3(Ga,Al)5O12:Ce scintillation crystals;S. Zazubovich 等;Journal of Luminescence;第242卷;118548(1-15) * |
| Mg共掺杂Gd3(Al,Ga)5O12:Ce晶体快发光的作用机理;李铭清 等;无机材料学报;第37卷(第10期);1123-1128 * |
| Mn ions-activated Gd3(Al,Ga)5O12 garnet solid-solution ceramics: Cation substitution for dual wavelength red-emission;Sun Bingheng 等;Journal of the American Ceramic Society;第106卷(第1期);513-526 * |
| Relationship Between Li/Ce Concentration and the Luminescence Properties of Codoped Gd-3(Ga, Al)(5)O12:Ce;Masao Yoshino 等;physica status solidi b-basic solid state physics;第257卷(第8期);1900504 (1-6) * |
| 掺铈钆铝镓石榴石闪烁晶体的研究进展及应用;丁雨憧 等;压电与声光;第43卷(第2期);281-289 * |
| 稀土掺杂GAGG粉体及陶瓷制备工艺与性能研究;段洋洋;中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑(第2期);B015-452 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115894028A (en) | 2023-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Tunable white-light emission via energy transfer in single-phase LiGd (WO 4) 2: Re 3+(Re= Tm, Tb, Dy, Eu) phosphors for UV-excited WLEDs | |
| Li et al. | Structural and luminescent properties of Eu3+-doped double perovskite BaLaMgNbO6 phosphor | |
| Jin et al. | Novel double perovskite Sr3WO6: Sm3+, Na+ orange-red emitting phosphors with high thermal stability for white LEDs | |
| Li et al. | Ce 3+ and Tb 3+ doped Ca 3 Gd (AlO) 3 (BO 3) 4 phosphors: synthesis, tunable photoluminescence, thermal stability, and potential application in white LEDs | |
| CN102173773A (en) | Transparent ceramic for high brightness white light-emitting diode and preparation method thereof | |
| Zhang et al. | Strong and pure red-emitting Eu 3+-doped phosphor with excellent thermal stability for warm WLEDs | |
| CN110003893B (en) | Silicate of silicon yellow-orange long persistence luminescent material and preparation method | |
| CN115894028B (en) | Luminescent ceramic for alternating electric field indication and preparation method thereof | |
| Wang et al. | Preparation and photoluminescence of Tm3+/Eu2+/Eu3+ tri-doped fluorosilicate glass ceramics for warm WLED | |
| CN110156332B (en) | Transparent long-afterglow microcrystalline glass and preparation method thereof | |
| CN103172356A (en) | A synthetic method for transparent ceramic of Sr2MgSi2O7: eu2+, dy3+ | |
| CN106833643B (en) | A kind of green emitting phosphor and preparation method thereof of ultraviolet/near ultraviolet excitation | |
| CN107722972B (en) | Green long-afterglow luminescent material and preparation method thereof | |
| CN114133930B (en) | Warm white garnet type fluorescent glass ceramic and preparation method thereof | |
| CN110746971A (en) | Mn/Ce co-doped gadolinium aluminum garnet-based fluorescent powder | |
| CN105802617A (en) | Method for improving luminescent property of SrAl2B2O7:Tb<3+> green fluorescent powder | |
| Yan et al. | Luminescence enhancement for Y 2 Mo 4 O 15: Pr 3+ red-emitting phosphors by Tb 3+ co-doping | |
| CN113980681A (en) | Metal ion doped rare earth phosphate red light conversion agent and preparation method and application thereof | |
| CN107129801A (en) | A kind of Li+The method for being co-doped with improving silicate fluorescent powder long afterglow property | |
| CN103045262A (en) | White long-lasting luminescent material and synthetic method thereof | |
| CN102925142A (en) | Method for preparing ternary sulfide and quaternary sulfur oxide phosphor powder | |
| Liu et al. | Preparation and luminescence properties of Li 2. 0 6 Nb 0. 1 8 Ti 0. 7 6 O3: Eu 3+ phosphors | |
| CN109294583B (en) | Cerium ion doped barium gadolinium titanate blue fluorescent powder for white light LED and preparation method thereof | |
| CN102585815B (en) | Orange-red long path persistence luminescent material and preparation method thereof | |
| CN102649905B (en) | Up-conversion nitrogen oxide material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |