CN116574505A - Preparation method of gallate stress luminescent material - Google Patents
Preparation method of gallate stress luminescent material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 38
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims abstract description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 35
- 238000000227 grinding Methods 0.000 claims description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 27
- 229910052593 corundum Inorganic materials 0.000 claims description 25
- 239000010431 corundum Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims description 3
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7743—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing terbium
- C09K11/7744—Chalcogenides
- C09K11/7746—Chalcogenides with alkaline earth metals
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G15/00—Compounds of gallium, indium or thallium
- C01G15/006—Compounds containing, besides gallium, indium, or thallium, two or more other elements, with the exception of oxygen or hydrogen
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention discloses a preparation method of a gallate elastic stress luminescent material, which relates to the technical field of stress luminescent materials, and the technical scheme is as follows: use of SrCO 3 (99.95％)、CaCO 3 (99.99％)、Ga 2 O 3 (99.99%) and Tb 4 O 7 (99.99%) is used as raw material to prepare the green fluorescent powder by a high-temperature solid phase method. The x-ray diffraction peak of the obtained sample is strong and very sharp, which indicates that the sample has good crystallinity. The luminescent material disclosed by the invention has excellent performance, generates characteristic green emission under ultraviolet excitation, and has excellent long afterglow and stress luminescence performance. The preparation method is nontoxic and harmless, simple, and can be obtained by sintering in air; the sample has good stability, is not easy to deliquescence, and is still in a pure phase after two months of preparation; the raw materials are low in cost, and the large-scale batch production can be realized. Has good fields of illumination display, information anti-counterfeiting, visual mechanical sensing, structural monitoring, genetic detection and the likeApplication prospect.
Description
Technical Field
The invention relates to the technical field of luminescent materials, in particular to a preparation method of a gallate stress luminescent material.
Background
Luminescent materials convert certain types of energy into light emission, which has become an essential part of our daily lives due to their wide application in lighting and display. Among the various luminescent processes, stress luminescent materials are of particular interest because they produce visible luminescence through various mechanical stimuli that are common in nature.
Stress luminescence refers to the luminescence behavior of a material under mechanical stimuli such as friction, tension, compression and impact. Compared with other types of luminescence, the stress luminescent material can generate light emission by utilizing the ubiquitous mechanical energy in daily life, and the requirement on an artificial photon or electronic excitation source is avoided. The emission intensity of stress luminescence has an accurate linear relation with the external load in the elastic deformation range, so that a real-time and reliable stress detection signal can be provided, and the application prospect of the stress detection signal is greatly improved. Stress luminescence has shown wide application prospects in the fields of green illumination, display, information storage, advanced anti-counterfeiting, visual mechanical sensing, structural health monitoring, biological imaging and the like in recent years, and potential application fields of the stress luminescence include damage detection, self-diagnosis, optical stress sensors for recording defects and damage, a fuze system of a army warhead, time visualization of stress distribution in a solid, a stress field near a crack tip, development of a safety monitoring network system, earthquake prediction, ceramic structure sudden fracture detection and the like, so that the stress luminescence has attracted extensive attention of researchers.
So far, the stress luminescent fluorescent powder also covers the whole visible spectrum region from ultraviolet light, blue light, green light to red orange light. However, due to the short research history of the elastic stress luminescent material, the material is still in a primary stage, and a plurality of problems to be solved still exist. In the present stage, tens of stress luminescent fluorescent powders are synthesized, but the stress luminescent performance of most materials cannot meet the requirements of practical application, so that more intensive research is needed, the luminescent performance is further improved, and meanwhile, the green, environment-friendly and high-performance stress luminescent materials with good luminescent performance are further needed to be developed.
In addition, no complete stress luminescence test standard and quantitative standard scheme are established so far, the mechanism of elastic stress luminescence is still unclear, no accepted theoretical model exists, the mechanism of stress luminescence is required to be perfected continuously, and different stress luminescent materials with excellent performances are urgently developed.
Disclosure of Invention
The invention aims to provide a preparation method of gallate stress luminescent material to solve the technical problems.
The technical aim of the invention is realized by the following technical scheme: a preparation method of gallate stress luminescent material comprises the following components: srCO 3 、CaCO 3 、Ga 2 O 3 And Tb 4 O 7 The method comprises the steps of carrying out a first treatment on the surface of the The preparation method comprises the following steps:
s1: calculating the corresponding stoichiometric ratio of each component;
s2: respectively weighing the mass of each component by a balance according to the calculated stoichiometric ratio;
s3: placing the weighed medicines into an agate mortar, adding a proper amount of absolute ethyl alcohol for grinding, and uniformly mixing the components;
s4: pouring the uniformly mixed medicine into an alumina crucible, adding a cover, placing the crucible into an oven for 15min to volatilize residual ethanol, then placing the crucible into a muffle furnace, setting the heating rate, preserving heat at 1200-1400 ℃ for 8-10h, setting a cooling program, and sintering under the air atmosphere;
s5: the sintered product was cooled to room temperature and taken out, and the sintered product was ground into powder with an agate mortar to prepare a phosphor.
The invention is further provided with: weighing CaCO according to stoichiometric ratio 3 0.5412g (purity 99.99%) SrCO 3 0.8233g of Ga (purity 99.95%) 2 O 3 2.0900g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0312g, which will be referred to asAdding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, rising to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving heat for 10 hours, then reducing to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into the mortar for grinding into fluorescent powder.
The invention is further provided with: weighing CaCO according to stoichiometric ratio 3 0.5277g (purity 99.99%) SrCO 3 0.8197g of Ga (purity 99.95%) 2 O 3 2.0808g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.0519g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
The invention is further provided with: weighing CaCO according to stoichiometric ratio 3 0.5277g (purity 99.99%) SrCO 3 0.8197g of Ga (purity 99.95%) 2 O 3 2.0808g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.0519g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
The invention is further provided with: weighing CaCO according to stoichiometric ratio 3 0.5011g (purity 99.99%) SrCO 3 0.8126g of Ga (purity 99.95%) 2 O 3 2.0627g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0925g, grinding the weighed reagent in agate mortar with absolute ethanol for 40min, adding the ground powder into corundum crucible, and placing into muffle furnace in air atmosphereRaising the temperature to 1280 ℃ at the speed of 5 ℃/min, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at the speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
The invention is further provided with: weighing CaCO according to stoichiometric ratio 3 0.4880g (purity 99.99%) SrCO 3 0.8090g of Ga (purity 99.95%) 2 O 3 2.0537g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.1126g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
In summary, the invention has the following beneficial effects: the fluorescent powder prepared by the invention has the advantages of simple and low-cost raw materials, easy synthesis, air sintering atmosphere, good sample stability, difficult deliquescence, pure phase sample after two months of preparation, large-scale batch production and suitability for industrial production.
Drawings
FIG. 1 is an XRD pattern for an embodiment of the invention;
FIG. 2 is a diagram of an embodiment of the present invention 0.93 SrGa 4 O 8 :0.07Tb 3+ Scanning electron microscope images;
FIG. 3 is a graph of luminescence spectra of an embodiment of the present invention;
FIG. 4 is a stress luminescence spectrum and an emission spectrum of an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to fig. 1-4.
A preparation method of gallate stress luminescent material comprises the following components: srCO 3 (purity 99.95%), caCO 3 (purity 99.99%), ga 2 O 3 (purity 99.99%) and Tb 4 O 7 (purity 99.99%); the preparation method comprises the following steps:
s1: calculating the corresponding stoichiometric ratio of each component;
s2: respectively weighing the mass of each component by a balance according to the calculated stoichiometric ratio;
s3: mixing the components uniformly in an agate mortar to prepare raw materials, and adding a proper amount of absolute ethyl alcohol for grinding;
s4: pouring the uniformly mixed raw materials into an alumina crucible, adding a cover, placing the crucible into an oven for 15min to volatilize residual ethanol, then placing the crucible into a muffle furnace, setting the heating rate, preserving heat at 1200-1400 ℃ for 8-10h, setting a cooling program, and sintering under the air atmosphere;
s5: the sintered product was cooled to room temperature and taken out, and the sintered product was ground into powder with an agate mortar to prepare a phosphor.
Embodiment one: ca (Ca) 0.97 SrGa 4 O 8 :0.03Tb 3+
Weighing CaCO according to stoichiometric ratio 3 0.5412g (purity 99.99%) SrCO 3 0.8233g of Ga (purity 99.95%) 2 O 3 2.0900g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0312g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
Embodiment two: ca (Ca) 0.95 SrGa 4 O 8 :0.05Tb 3+
Weighing CaCO according to stoichiometric ratio 3 0.5277g (purity 99.99%) SrCO 3 0.8197g of Ga (purity 99.95%) 2 O 3 2.0808g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.0519g, grinding the weighed reagent in agate mortar with absolute ethanol for 40min, adding the ground powder into corundum crucible, and heating to 1280 deg.C at 5 deg.C/min in air atmosphereThe temperature is 10 hours, then the temperature is reduced to 200 ℃ at the speed of 5 ℃/min, the natural cooling is carried out, and finally, the sintered product after the natural cooling is poured into a mortar for grinding into fluorescent powder.
Embodiment III: ca (Ca) 0.93 SrGa 4 O 8 :0.07Tb 3+
Weighing CaCO according to stoichiometric ratio 3 0.5277g (purity 99.99%) SrCO 3 0.8197g of Ga (purity 99.95%) 2 O 3 2.0808g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.0519g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
Embodiment four: ca (Ca) 0.91 SrGa 4 O 8 :0.09Tb 3+
Weighing CaCO according to stoichiometric ratio 3 0.5011g (purity 99.99%) SrCO 3 0.8126g of Ga (purity 99.95%) 2 O 3 2.0627g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0925g, adding absolute ethyl alcohol into agate mortar to grind for 40min, adding the evenly grinded powder into corundum crucible, then placing into muffle furnace to raise to 1280 ℃ at 5 ℃/min speed under air atmosphere, preserving heat for 10 hours, then lowering to 200 ℃ at 5 ℃/min speed, then naturally cooling, finally pouring the naturally cooled sintered product into mortar to grind into fluorescent powder.
Fifth embodiment: ca (Ca) 0.89 SrGa 4 O 8 :0.11Tb 3+
Weighing CaCO according to stoichiometric ratio 3 0.4880g (purity 99.99%) SrCO 3 0.8090g of Ga (purity 99.95%) 2 O 3 2.0537g, tb (purity 99.99%) 4 O 7 0.1126g (purity 99.99%) of the reagent is prepared by grinding the reagent in an agate mortar with absolute ethanol for 40min, and adding the ground powderPutting the mixture into a corundum crucible, then putting the corundum crucible into a muffle furnace, rising to 1280 ℃ at a speed of 5 ℃/min under the air atmosphere, preserving heat for 10 hours, then falling to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
Test characterization
XRD pattern
As can be seen from FIG. 1, the comparison result with the standard PDF card shows that the material is CaSrGa 4 O 8 Belongs to an orthorhombic system, and the space group is Pnma.
2. Scanning electron microscope
FIG. 2 is Ca 0.93 SrGa 4 O 8 :0.07Tb 3+ The scanning electron microscope image shows that the sample surface is smooth and has no impurity.
3. Emission spectrum
As shown in FIG. 3, the photoluminescence spectrum, in which excitation wavelength is 246nm and emission wavelength is 543nm, tb was obtained by analyzing the coordination environment and the ion radius 3+ Ca in the crystal 2+ The position is the light-emitting peak Tb 3+ A kind of electronic device 5 D 3 → 7 F J (j=3, 4,5, 6) and 5 D 3 → 7 F J (j=3, 4,5, 6) transition emission. Example 3 has the strongest emission intensity.
4. Stress luminescence spectrum
Preparation before testing
Before representing the stress luminescence property, the prepared stress luminescence material is respectively compounded with epoxy resin in a cylindrical polytetrafluoroethylene die (with the inner diameter of 2.5 cm) to obtain a stress luminescence composite material, and the specific compounding steps are as follows:
(1) 1.5g of the stress luminescent material powder in the above example was weighed with an electronic balance and the powder was spread to the bottom of the mold.
(2) Weighing by using an electronic balance and a small-sized culture dish, and stirring by using a glass rod according to the mass ratio of the epoxy resin to the curing agent of 3:1 to uniformly mix the epoxy resin and the curing agent.
(3) The industrial vaseline is uniformly smeared on the inner wall of the polytetrafluoroethylene mould.
(4) Weighing a proper amount of the resin mixed solution, adding the resin mixed solution into a mold, and putting the mold into a baking oven (60℃)
Preserving heat for 4 hours, and demoulding to obtain the block stress luminescent composite material.
FIG. 4 is a graph showing the stress luminescence spectrum and the emission spectrum of example 1. The sample of example 1 was excited under 254nm light for 3 minutes after being compounded with an epoxy resin, and then the spectrum was measured under a pressure of 3000N in a universal tester, wherein the peak position of the strongest peak was 550nm, and red shift was occurred compared with the peak position of the photoluminescence strongest peak of 544 nm.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (6)
1. The preparation method of the gallate stress luminescent material is characterized by comprising the following components: srCO 3 、CaCO 3 、Ga 2 O 3 And Tb 4 O 7 The method comprises the steps of carrying out a first treatment on the surface of the The preparation method comprises the following steps:
s1: calculating the corresponding stoichiometric ratio of each component;
s2: respectively weighing the mass of each component by a balance according to the calculated stoichiometric ratio;
s3: placing the weighed medicines into an agate mortar, adding a proper amount of absolute ethyl alcohol for grinding, and uniformly mixing the components;
s4: pouring the uniformly mixed medicine into an alumina crucible, adding a cover, placing the crucible into an oven for 15min to volatilize residual ethanol, then placing the crucible into a muffle furnace, setting the heating rate, preserving heat at 1200-1400 ℃ for 8-10h, setting a cooling program, and sintering under the air atmosphere;
s5: the sintered product was cooled to room temperature and taken out, and the sintered product was ground into powder with an agate mortar to prepare a phosphor.
2. The method for preparing gallate stress luminescent material according to claim 1Is characterized in that: weighing CaCO according to stoichiometric ratio 3 0.5412g (purity 99.99%) SrCO 3 0.8233g of Ga (purity 99.95%) 2 O 3 2.0900g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0312g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
3. The method for preparing the gallate stress luminescent material according to claim 1, wherein the method comprises the following steps: weighing CaCO according to stoichiometric ratio 3 0.5277g (purity 99.99%) SrCO 3 0.8197g of Ga (purity 99.95%) 2 O 3 2.0808g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.0519g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
4. The method for preparing the gallate stress luminescent material according to claim 1, wherein the method comprises the following steps: weighing CaCO according to stoichiometric ratio 3 0.5144g (purity 99.99%) SrCO 3 0.8161g of Ga (purity 99.95%) 2 O 3 2.0717g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0723g, adding absolute ethanol into agate mortar, grinding for 40min, adding the ground powder into corundum crucible, adding into muffle furnace, heating to 1280 deg.C at 5 deg.C/min, maintaining for 10 hr, cooling to 200deg.C at 5 deg.C/min, naturally cooling, and pouring the naturally cooled sintered product into mortarGrinding into fluorescent powder.
5. The method for preparing the gallate stress luminescent material according to claim 1, wherein the method comprises the following steps: weighing CaCO according to stoichiometric ratio 3 0.5011g (purity 99.99%) SrCO 3 0.8126g of Ga (purity 99.95%) 2 O 3 2.0627g, tb (purity 99.99%) 4 O 7 (purity 99.99%) 0.0925g, adding absolute ethyl alcohol into agate mortar to grind for 40min, adding the evenly grinded powder into corundum crucible, then placing into muffle furnace to raise to 1280 ℃ at 5 ℃/min speed under air atmosphere, preserving heat for 10 hours, then lowering to 200 ℃ at 5 ℃/min speed, then naturally cooling, finally pouring the naturally cooled sintered product into mortar to grind into fluorescent powder.
6. The method for preparing the gallate stress luminescent material according to claim 1, wherein the method comprises the following steps: weighing CaCO according to stoichiometric ratio 3 0.4880g (purity 99.99%) SrCO 3 0.8090g of Ga (purity 99.95%) 2 O 3 2.0537g, tb (purity 99.99%) 4 O 7 (purity 99.99%) of 0.1126g, adding absolute ethyl alcohol into an agate mortar for grinding for 40min, adding the uniformly ground powder into a corundum crucible, then placing the corundum crucible into a muffle furnace, raising the temperature to 1280 ℃ at a speed of 5 ℃/min under an air atmosphere, preserving the temperature for 10 hours, then lowering the temperature to 200 ℃ at a speed of 5 ℃/min, naturally cooling, and finally pouring the naturally cooled sintered product into a mortar for grinding into fluorescent powder.
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