36 results about "Tantalate" patented technology

The invention provides a composite positive electrode material and a preparation method and application thereof. The composite positive electrode material comprises a lithium manganese iron phosphate inner core, and an inorganic coating layer and an organic coating layer which sequentially coat the surface of the lithium manganese iron phosphate inner core, wherein the inorganic coating layer comprises a lithium niobate tantalate material, and the organic coating layer comprises polypyrrole and polyolefin. By adopting an inorganic-organic composite coating strategy, on one hand, the high stability of the lithium niobate tantalate material is taken as a core support, the volume expansion of the positive electrode material in the charging and discharging process is inhibited, the structural stability of the material in a high-temperature and high-voltage environment is enhanced, and the potential safety hazard is reduced; on the other hand, by means of high conductivity of polypyrrole, the problem that the intrinsic conductivity of the positive electrode material is low is solved, the rate capability of the battery is effectively improved, meanwhile, the interface protection effect of polyolefin is utilized, the interface side reaction and dissolution of metal ions such as Mn and Fe are inhibited, and the cycle life of the battery is prolonged.

The application discloses a potassium fluorotantalate crystallization purification method, and relates to the technical field of tantalum hydrometallurgy and fluorotantalate crystallization purification. The method comprises the following steps: filtering a tantalum-containing fluorine acid solution, adding a potassium source and a tantalum-niobium separation type composite crystallization regulator, stirring and complexing, seed induction, controlled cooling crystallization, graded removal of the regulator, solid-liquid separation, and potassium fluoride containing fluorine acid washing to obtain primary purified potassium fluorotantalate crystals, and then redissolving the primary purified potassium fluorotantalate crystals in a fluorine-containing acid solution, correcting the K / Ta molar ratio, repeatedly regulating and crystallizing, graded removal of the regulator, washing, and drying to obtain high-purity potassium fluorotantalate. The regulator can reduce the entrainment of niobium impurities and reduce the residual amount of the regulator itself, thereby improving the purity of the product and the Ta yield.

The present application relates to the technical field of photoelectric functional crystal materials, in particular to a preparation method of tetragonal transparent potassium tantalum niobate crystal, comprising the following steps: (1) plating electrodes on the surface of the crystal; (2) controlling the temperature of the potassium tantalum niobate crystal with plated electrodes to be within the range of 2-6 ℃ below the Curie point and keeping it constant all the time; (3) polarizing the crystal by applying an alternating electric field under ultraviolet laser irradiation to obtain the tetragonal transparent potassium tantalum niobate crystal. The potassium tantalum niobate crystal prepared by the method can maintain a transparent state for a long time without a large thermal shock, solving the problem that the tetragonal potassium tantalum niobate crystal cannot be applied in the field of electro-optical modulation due to low light transmittance, and also solving the problem of light scattering caused by micro-domain walls of the cubic potassium tantalum niobate crystal near the Curie point.

The invention relates to the technical field of tantalate thermal barrier coatings, in particular to a construction method and application of a rare earth tantalate material multi-performance prediction model, and the construction method comprises the following steps: collecting Young modulus, shear modulus, thermal expansion coefficient and thermal conductivity data of a rare earth tantalate material; an initial feature set is constructed based on material component features, and redundant features are deleted by using a Pearson correlation analysis method to reduce the complexity of the model. And modeling and evaluating various machine learning models. And on the basis of each performance optimal model, SFFS sequence floating forward feature subset screening is carried out. And finally, integrating the optimal feature set of each performance, and constructing a multi-performance integrated prediction model of the rare earth tantalate material. According to the method, the high-precision component-multi-performance mapping model can be constructed, the Young modulus, the shear modulus, the thermal expansion coefficient and the thermal conductivity of the rare earth tantalate material can be quickly and accurately predicted, the consumption of experiment resources is reduced, and the experiment progress is accelerated.

This invention discloses a thermal shock resistant gradient composite coating on the surface of a silicon carbide-based composite material and its preparation method, relating to the field of high-temperature protective coating technology. The method includes sequentially preparing n layers of silicon-doped tantalate aSi-b(DTa) on a fiber-reinforced silicon carbide-based composite material matrix. 1‑x Si 2x O4 forms a thermal shock resistant gradient composite coating system, wherein a = 1–0, b = 0–1, and x = 0.01–0.09; the thickness of each silicon-doped tantalate layer increases sequentially from the inside out, while the porosity decreases sequentially. Due to the intrinsic properties of the coating material and the gradient coating structure design, the gradient composite coating of this invention possesses stronger fracture toughness, higher bonding strength, lower thermal diffusion rate, and a more suitable coefficient of thermal expansion, giving it superior thermal shock resistance and significantly improving the service life of silicon carbide-based composite materials. It is an extremely advanced high-temperature protective coating for silicon carbide-based composite material surfaces.

The application discloses a Bi4Ti3O12 nanosheet piezoelectric catalyst and a preparation method and application thereof. Bi(NO3)3*5H2O, Ti(OC4H9)4 and Ta2O5 are used as raw materials to prepare a precursor through co-precipitation, NaCl and KCl are used as molten salts to mix the precursor, and then ball milling is carried out, the obtained powder after the ball milling is dried, and then a molten salt reaction is carried out, so that the product is obtained, and after washing and drying, the Bi4Ti3O12 nanosheet piezoelectric catalyst is obtained, and is successfully applied to piezoelectric catalytic degradation of rhodamine B. The prepared Bi4Ti3O12 nanosheet piezoelectric catalyst is a nanosheet with high purity and good crystallinity, and a high-activity exposed surface is beneficial to improving the transmission and separation of photo-generated charges, improving the piezoelectric catalytic performance of the Bi4Ti3O12 nanosheet piezoelectric catalyst, and the preparation process is simple.

The invention discloses thermal barrier coating powder with a micro-explosion effect and an efficient evaporation agglomeration structure and a preparation method of the thermal barrier coating powder, and belongs to the technical field of thermal spraying materials. The thermal barrier coating powder is powder with an agglomeration structure and is formed by uniformly mixing and agglomerating hollow polymer microspheres and nano ceramic particles through an organic binder; the hollow polymer microspheres comprise one or more of polymethyl methacrylate, polyethylene, polystyrene, polylactic acid, polyacrylic acid, polyvinyl butyral, polyisobutene, polycarbonate and polyethylene glycol terephthalate; the nano ceramic particles comprise one of yttrium oxide stabilized zirconium oxide, rare earth zirconate, multi-element rare earth doped zirconate, rare earth tantalate and oxide. The method is used for solving the technical problem that in an existing PS-PVD process, part of powder is only melted in plasma jet and is not fully gasified, so that a lamellar structure where melted particles are accumulated is formed in a coating, and an ideal vapor deposition columnar crystal structure is not formed.

Provided is a novel tantalate dispersion containing no hardly-volatile organic component and having high dispersibility in water, the tantalate dispersion containing tantalum or / and tantalate and amine in water, the tantalate dispersion having an intensity ratio (5.5° / 29°) of an intensity at 2θ=5.5° to an intensity at 2θ=29° being 1.00 or more in an X-ray diffraction pattern obtained by subjecting a powder obtained by drying the tantalate dispersion to powder X-ray diffraction measurement using CuKα rays.

This application provides an in-situ grown needle-like blend of GdTaO4 / Sm-CeO2 radiation-resistant and antibacterial particles, its preparation method, and its application, relating to the fields of radiation protection materials and antibacterial materials. The radiation-resistant and antibacterial particles of this application use needle-like gadolinium tantalate as the radiation shielding matrix. A sheet-like samarium-doped cerium dioxide antibacterial component is uniformly grown on its surface using a hydrothermal in-situ growth method, resulting in a dual-functional composite material with an integrated needle-sheet blend structure. This application achieves strong interfacial bonding between the two phases through rare-earth lattice matching, while in-situ growth solves the core problem of easy agglomeration in physically blended powders. The resulting composite material possesses both radiation protection (X-rays + thermal neutrons) and highly efficient antibacterial functions. It exhibits controllable crystallization, strong batch stability, good compatibility with various matrices, stable structure, and uniform dispersion. It can be directly used as a functional filler or further processed into molds. The resulting products can be applied in fields such as nuclear industry protection, radiation medical dressings, military protective equipment, and civilian antibacterial and radiation-resistant products.

The invention discloses a gradient high-temperature-resistant anti-oxidation coating for a substrate glass platinum channel and a preparation method of the gradient high-temperature-resistant anti-oxidation coating. The gradient high-temperature-resistant anti-oxidation coating comprises yttrium oxide stabilized zirconia (YSZ) with the thickness of 0.1-0.5 mm as a middle bonding transition layer, and yttrium oxide stabilized zirconia (YSZ) with the thickness of 0.1-0.5 mm as a middle bonding transition A composite material of rare earth tantalate and YSZ (Yttria Stabilized Zirconia) with the thickness of 0.05-0.2 mm is used as an outer functional protective layer, and the doping amount of the YSZ is 10-30wt%. The whole coating adopts a component gradient transition design, is prepared by an atmospheric plasma spraying technology, and is assisted by subsequent heat treatment. According to the structure, thermal expansion mismatch is effectively relieved, the bonding strength of the coating and a platinum substrate is improved, diffusion of oxygen and oxidative volatilization of platinum at a high temperature are remarkably inhibited, and the problem of pulverization of a traditional YSZ coating in a high-temperature environment is solved. The method can greatly prolong the service life of the platinum channel, reduces the production cost, and is suitable for the field of manufacturing of advanced display substrate glass.

The invention relates to a piezoelectric substrate on insulation (POI) (130, 138, 144, 152, 166) comprising a support substrate (100) including a trapping layer (102) on a free surface (104) of the support substrate (100), a piezoelectric layer (106), an intermediate structure (110) positioned sandwiched between the piezoelectric layer (106) and the trapping layer (102) of the support substrate (100), wherein the intermediate structure (120) includes at least one Tantalate Oxide (Ta2O5)-based metallic element diffusion barrier layer (122, 122') having a thickness tEM greater than a predetermined thickness, said predetermined thickness being determined as a function of the thickness of the trapping layer (102) such that the dose of metallic element in the trapping layer (102) is below a predetermined threshold dose.The invention also relates to a method for manufacturing such a piezoelectric substrate on an insulator (POI) (130, 138, 144, 152, 166). Figure for the abstract: Figure 1.

The invention relates to the technical field of material screening, in particular to a rare earth tantalate material heat conductivity screening method based on active learning, which comprises the following steps: firstly, evaluating a model by adopting a component-leaving grouping cross validation method to ensure the reliability of the model on the aspect of unseen components; secondly, core feature parameters are compressed through feature engineering, and the model efficiency is improved. And finally, calculating a thermal conductivity expected improvement value EI for the thermal conductivity model by adopting an active learning framework based on Bootstrap sampling so as to quantify the potential of the material for breaking through the current optimal thermal conductivity. Then, screening a high-potential material for experimental preparation, and substituting the high-potential material into a data set for iteration until an optimal material is obtained; the optimal component can be locked from 1690000 components only through two rounds of experiments, the research and development cost is remarkably reduced, the method is suitable for development of high-temperature heat insulation materials, and an efficient and reliable new normal form is provided for design of aero-engine thermal barrier coating materials.

The invention belongs to the technical field of preparation of thermal barrier coating ceramic powder, and particularly relates to rare earth tantalate / niobate and zirconate (RETa / NbO4 and RE2Zr2O7) composite ceramic powder and a preparation method of the rare earth tantalate / niobate and zirconate (RETa / NbO4 and RE2Zr2O7) composite ceramic powder. The molecular formula of the rare earth tantalum / niobate and zirconate composite ceramic powder is (RETa / NbO4) x (RE2Zr2O7) 1-x, wherein x is more than 0 and less than 1; rE is one or a mixture of more of Y, Yb, Gd, La, Nd, Lu, Sm, Eu, Dy and Er. By doping rare earth elements, the thermodynamic property of the powder material can be improved; the thermal barrier coating ceramic powder (RETa / NbO4) x (RE2Zr2O7) 1-x can be directly synthesized through a one-step method, the process is simple, and compared with physical mixing after synthesis, the powder synthesized in one step is more uniform in component and more excellent in performance.

The invention relates to the technical field of coating protection, in particular to a tantalum ceramic fireproof coating and a preparation method thereof. The fireproof coating comprises the following components in parts by weight: 100 parts of epoxy resin, 30-45 parts of a curing agent, 15-30 parts of rare earth tantalate, 60-80 parts of aluminum ore slag, 20-40 parts of hematite, 5-10 parts of nano aluminum oxide and 1-3 parts of a water reducing agent. According to the tantalum ceramic fireproof coating disclosed by the invention, the rare earth tantalate is effectively utilized, and meanwhile, the prepared fireproof coating has a relatively high melting point and good fire resistance, and is relatively low in heat conductivity coefficient, high in heat insulation capability and relatively good in overall homogeneity.

Apparatus and methods for growing films of complex layered metal oxides with high stoichiometries and high crystal qualities are provided. The layered complex metal oxides include two or more metals and oxygen and have a layered structure. The methods, which are referred to as hybrid pulsed laser deposition (hybrid PLD), synergistically combine the advantages of molecular beam epitaxy (MBE) and pulsed laser deposition (PLD) to grow complex metal oxide films that include metals with very different vapor pressures.

The invention belongs to the technical field of crystal growth, and particularly relates to a lanthanide doped tantalate gallium lanthanum high-temperature piezoelectric crystal material and a preparation method and application thereof. The chemical general formula of the prepared material is RxLa (3-x) Ga (5.5) Ta0. 5O14, R is selected from one or more of ytterbium and erbium, the value range of x is 0.1-1.0, the carrier recombination rate in an LGT crystal is remarkably increased by introducing R, migration of carriers is inhibited, and therefore the order of magnitude of resistivity is increased, high-temperature cycling stability is maintained, and the performance of the LGT crystal is improved. The resistance characteristic of the crystal material is obviously improved.

This invention discloses a method for preparing low-oxygen, high-specific-capacitance tantalum powder for tantalum capacitors, addressing the problems commonly found in existing magnesothermic reduction methods for tantalum powder preparation, such as high oxygen content, difficulty in suppressing the byproduct magnesium tantalate, and poor powder particle uniformity leading to low specific capacitance, high leakage current, and poor electrical performance. This method involves uniformly coating a completely removable soluble additive onto the surface of porous spherical tantalum oxide particles. After drying, these particles are mixed with alkali metal halides and a single-phase addition of metallic magnesium powder. A gradient-temperature reduction process is employed: in the intermediate temperature stage, the additive decomposes to construct a porous framework and initiates initial reduction; in the high-temperature stage, deep reduction is completed. A molten salt medium synergistically regulates the heat of reaction and mass transfer, completely suppressing the formation of magnesium tantalate. The product, after post-treatment, yields tantalum powder with an oxygen content ≤2500 ppm, a specific capacitance ≥110000 μFV / g, and a uniform coral-like porous structure. This method offers a clean and highly controllable process, resulting in high-purity tantalum powder with excellent electrical properties, making it suitable for high-end tantalum electrolytic capacitors.

The invention provides a performance detection device and a preparation process of a graphite-loaded potassium tantalate composite material, and relates to the technical field of optical detection, the performance detection device comprises a detection box, a mobile detection mechanism, a convenient compaction mechanism and a mobile mechanism; the movable detection mechanism comprises a movable platform and a sample seat, the sample seat is arranged on the inner side of the movable platform, two sliding blocks are fixedly arranged at the bottom of the movable platform, the surfaces of the two sliding blocks are slidably connected with connecting plates, and springs are arranged on the inner sides of the two connecting plates. According to the scheme, the moving mechanism finally drives the moving platform and the driving toothed plate to synchronously move, a sample groove in the sample seat can be automatically and accurately transferred to the position below the compaction block, the sample seat can automatically return to the initial position through cooperation of the sliding block and the spring after compaction is completed, manual intervention is not needed in the whole process, and the working efficiency is improved. And the optical detection efficiency of the sample is effectively improved.

This invention discloses a cubic fluorite-type terbium scandium tantalate magneto-optical crystal and its preparation method. The molecular formula of the crystal is Tb. 3‑ x Sc x TaO7, where x = 0.8~2, belongs to the cubic crystal system with space group Fm-3m. This invention involves doping small-radius Sc atoms into Tb3TaO7 crystals. 3+ Replace part of Tb 3+ This invention achieves a structural transformation of crystals from a low-symmetry orthorhombic phase to a high-symmetry cubic phase, and successfully grows high-quality bulk single crystals with centimeter-scale cubic phase using the Czochralski method. The crystals prepared by this invention exhibit good crystallinity, high quality, and excellent magneto-optical properties, showing promising application prospects in the fabrication of devices such as magneto-optical isolators, magneto-optical circulators, and magneto-optical modulators.

The invention relates to a high-Q-value microwave dielectric ceramic material based on a composite magnesium tantalate system and a preparation method of the high-Q-value microwave dielectric ceramic material. The high-Q-value microwave dielectric ceramic material based on the composite magnesium tantalate system comprises a composite matrix phase and a transition layer (Mg, La) 3 (Ga, Ta) O6, wherein the composite matrix phase is composed of normal magnesium tantalate Mg5Ta4O15 crystal grains and meta magnesium tantalate MgTa2O6 crystal grains, and the transition layer (Mg, La) 3 (Ga, Ta) O6 is formed at the two-phase crystal boundary of the normal magnesium tantalate and the meta magnesium tantalate.

The application discloses an anti-sintering low-thermal-diffusion-coefficient rare earth tantalate environmental barrier coating ceramic material and a preparation method and application thereof. x Al 1‑x TaO4; the density of the ceramic material is 94.9-98.4%, the pore shrinkage rate is less than 0.5% after long-time heat preservation at 1500 DEG C high temperature; the RE element is Sc, Y or Yb, and the value range of x is 0.02-0.16. The preparation method is that Sc2O3 powder, Y2O3 powder or Yb2O3 powder, aluminum nitrate solution and tantalum chloride solution are used as raw materials, a reaction precipitation colloid is prepared by adopting a chemical co-precipitation method, mixed powder is obtained after washing, drying, grinding and sieving, and ceramic bulk material is obtained after high-temperature hot pressing calcination. The ceramic material prepared by the application has excellent high-temperature thermodynamic performance, a lower thermal diffusion coefficient and a hardness value far exceeding that of common environmental barrier coating materials, and a thermal expansion coefficient matched with carbon fiber reinforced ceramic matrix composite materials, and is an environmental barrier coating material with great potential.

The application provides a method for improving the performance of laser selective melting forming pure tungsten grid. By adding rare earth tantalate RETaO4 as a nucleating agent, the strength and hardness of the tungsten grid are improved, and it is more durable. In addition, the use of double-layer glow plasma surface alloying technology can further improve its performance, making it more corrosion resistant and wear resistant. The tungsten grid sample prepared by the tungsten composite powder formula and surface modification of the application can effectively improve the tensile properties and elongation, and can improve its toughness and high temperature resistance. The toughness is increased by about three times, and the specific wear rate is reduced by one unit.

This invention relates to the field of crystal growth technology, specifically to a potassium tantalate niobate crystal, its preparation method, and its applications. Its chemical formula is: K 1+z‑a A a Ta 1‑x‑y Nb x D y O3, where the A-doped ion is co-doped with Na⁺ and Li⁺, and a is the molar equivalent of A element 0≤a≤0.1; the D-site doped ion is Sn. 4+ Fe 3+ Co-doping is performed, where y is the molar amount of element D, with y ≤ y ≤ 0.2; X is the molar equivalent of element Nb, with 0.3 ≤ x ≤ 0.45; and element K is added in excess, with Z being the excess molar equivalent of element K, with 0.1 ≤ Z ≤ 0.3. Combined with a gradient cooling process for excess K, phase transformation stress is released, crystal cracking is avoided, and large-size, high-quality KTN single crystals are obtained.

The present application relates to a kind of rare earth tantalate red luminescent material, its chemical formula is Li 0.25 Ba 1‑x Eu x Ta 0.75 O3, wherein x=0.09;The preparation method of the luminescent material is: according to the molar ratio of each element in the chemical formula Li 0.25 Ba 1‑x Eu x Ta 0.75 O3, x=0.09, Li2CO3, BaCO3, Ta2O5, Eu2O3 are weighed respectively, above-mentioned various raw materials are placed in agate mortar, deionized water is added, grinds, after drying, KCl is added, obtains to be sintered sample;The sintered sample is annealed in crucible using 750 DEG C sintering temperature for 10 hours, the obtained sample is washed with deionized water, after drying, the rare earth tantalate red luminescent material is obtained.The luminescent material has good thermal stability, high luminous intensity, has good color rendering index and higher color purity, the material has the hope to be applied in w-LED.

The invention relates to a magnesium tantalate large-size and high-specific-gravity hollow pipe and a high-temperature densification sintering preparation method thereof. The chemical composition of the magnesium tantalate large-size and high-specific-gravity hollow pipe comprises a composite phase of magnesium n-tantalate Mg5Ta4O15 and magnesium meta-tantalate MgTa2O6; preferably, the outer diameter of the magnesium tantalate large-size and high-specific-gravity hollow pipe is 120mm, the inner diameter is 90mm, the height is 300mm, the wall thickness is 15mm, the density is greater than or equal to 98%, the radial shrinkage deviation is less than or equal to 2%, the specific gravity is 7-7.5 g / cm < 3 >, and the grain size is 3-5mu m.

The application relates to the technical field of temperature-pressure phase diagram modeling, and discloses a temperature-pressure phase diagram modeling method based on a Grover model, which comprises the following steps: S1: obtaining the thermal expansion coefficient, volume and isothermal bulk modulus thermodynamic data of a rare earth tantalate system under different temperature and pressure conditions; S2: respectively correcting the molar volume and the isothermal compressibility under standard atmospheric pressure, reducing the influence of excessive sensitivity of the heat capacity on the coupling relationship between the temperature and the pressure, so as to realize the correction of the Grover model; and S3: obtaining the Gibbs free energy change through the corrected Grover model state equation, and linearly superimposing the Gibbs free energy change and the Gibbs free energy under standard atmospheric pressure given by a thermodynamic database to obtain a temperature-pressure phase diagram model. The application can ensure the accuracy of the obtained Gibbs free energy, thereby ensuring stable modeling and ensuring the reliability of the phase diagram.

This invention relates to the field of laser protection technology, specifically to a laser protection coating and its preparation method. The laser protection coating comprises a reflective ceramic layer, a heat-insulating ceramic layer, and at least three gradient ceramic layers located between the reflective and heat-insulating ceramic layers. The reflective ceramic layer comprises barium titanate and its doped system, and / or pyrochlore and its doped system; the heat-insulating ceramic layer comprises yttrium-stabilized zirconium oxide and its doped system, and / or rare-earth tantalates and their doped systems. The purpose of this laser protection coating and its preparation method is to address the problem of low optical reflectivity in existing laser-resistant materials.

The invention relates to the technical field of coating protection, in particular to a tantalum ceramic anticorrosive coating and a preparation method thereof. The anticorrosive coating comprises the following components in parts by weight: 100 parts of epoxy resin, 30-45 parts of a curing agent, 15-30 parts of tantalum compound ceramic, 20-30 parts of silicon powder, 60-80 parts of chromium oxide, 20-40 parts of aluminum triphosphate, 5-10 parts of graphene, 1-3 parts of a defoaming agent and 1-3 parts of a flatting agent. According to the tantalum ceramic anti-corrosion coating, the rare earth tantalate is effectively utilized, meanwhile, the prepared anti-corrosion coating has the high melting point and the good anti-corrosion performance, the coating is compact, corrosion media are effectively prevented from entering the coating, and the overall homogeneity is good.

The application provides a graphite-loaded potassium tantalate composite material performance detection device and preparation process, relates to the optical detection technical field, and comprises a detection box, a mobile detection mechanism, a convenient compaction mechanism and a moving mechanism. The mobile detection mechanism comprises a moving platform and a sample seat, the sample seat is arranged on the inner side of the moving platform, two sliding blocks are fixedly arranged at the bottom of the moving platform, connecting plates are slidably connected to the surfaces of the two sliding blocks, and springs are arranged on the inner sides of the two connecting plates. The scheme finally realizes synchronous movement of the moving mechanism, the moving platform and the driving gear plate, can automatically and accurately move the sample groove in the sample seat to the lower side of the compaction block, and can automatically return the sample seat to the initial position after compaction through cooperation of the sliding blocks and the springs. The whole process does not need manual intervention, and the optical detection efficiency of the sample is effectively improved.

This invention discloses a lithium-induced phase change tantalate ceramic material, its preparation method, and its applications. The material has the structural formula ZnTa₂O₆ and / or (Li₂O₆). 0.5 Zn 0.5 TaO3; the ZnTa2O6 is a tetragonal phase P42 / mnm structure, (Li 0.5 Zn 0.5 TaO3 has a trigonal R3c structure. This material is obtained by thoroughly mixing raw materials including ZnO, Ta2O5, and Li2CO3, placing them in a corundum crucible, and then sintering. This material uses ZnTa2O6 as a substrate and Li... + Under the influence of Li, by controlling Li + The addition of certain amounts of Li induces a phase transition within the ceramic material, allowing it to be used to prepare multifunctional piezoelectric ceramic materials, such as fluorescent materials. + With the increase of [unclear], the tantalate ceramic matrix in the fluorescent material gradually transforms from o-ZTO (cubic ZnTa₂O₆) to pure t-ZTO (tetragonal ZnTa₂O₆) and finally to pure LZTO (triclinic ZnTa₂O₆). 0.5 Zn 0.5 (TaO3), thereby significantly improving the internal quantum efficiency and luminescence thermal stability of fluorescent materials.