110 results about "Zirconate" patented technology

The invention belongs to the technical field of ceramic materials, and particularly relates to a ceramic dielectric material and a preparation method and application thereof. The ceramic dielectric material provided by the invention is prepared from the following raw materials: barium titanate, calcium zirconate, a sintering aid and a modifier, the sintering aid is a Li-Zn-B-Si glass material; and the modifier comprises one or more of Nb2O5, MnCO3, MgO and RE2O3 (rare earth oxide). The ceramic dielectric material has the advantages of high-temperature stability, high dielectric constant, low loss and high insulating property.

The invention relates to the technical field of thermal barrier coatings for gas turbines or aero-engines, and particularly discloses an ultra-thick and strong-bonding double-ceramic-layer thermal barrier coating and a preparation method thereof.The thermal barrier coating is composed of an MCrAlY bonding layer, a YSZ ceramic layer bottom layer and a high-entropy rare earth zirconate ceramic layer surface layer; the MCrAlY bonding layer is prepared through atmospheric plasma or hypersonic flame spraying, YSZ and high-entropy rare earth zirconate spherical powder serve as spraying raw materials, and the thermal barrier coating is prepared through an axial powder feeding high-energy plasma spraying system. The thermal barrier coating has the characteristics of super thickness (the coating thickness is 600-1200 microns), high bonding strength (gt; 19 MPa) and the like.

The invention belongs to the technical field of special ceramic preparation, and particularly relates to high-strength special ceramic and a preparation method thereof. The high-strength special ceramic is prepared from the following raw materials: alumina powder, quartz powder, serpentine, phosphorus slag, eucryptite, barium borate, nano yttrium trifluoride, nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane. According to the high-strength special ceramic disclosed by the invention, the aluminum oxide powder, the quartz powder, the serpentine and the phosphorus slag are taken as matrix raw materials, eucryptite, barium borate and yttrium trifluoride are taken as fluxing agents, and nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane are taken as fillers, so that the prepared special ceramic has excellent bending strength and fracture toughness.

The invention discloses a continuous casting submersed nozzle for improving castability of rare earth steel, the continuous casting submersed nozzle comprises a nozzle body, a slag line and an inner hole body, the inner hole body is a ZrO2-CaO-C material, the raw material of the inner hole body is calcium zirconate and graphite, and the inner hole body material comprises the following components in percentage by weight: 45-59% of ZrO2, 18-22% of CaO, 20-32% of C and the balance of inevitable impurities. According to the method, the problems of nodulation and blockage of the submersed nozzle in the continuous casting production process of the rare earth steel and reaming caused by poor corrosion resistance in use can be effectively relieved, the castability of the rare earth steel under multi-furnace continuous casting can be ensured, and the method is beneficial to improving the quality of a casting blank and realizing efficient and stable production of continuous casting.

The invention discloses a gradient preparation method of a compact barrier type rare earth ceramic coating, and belongs to the technical field of high-temperature protective coatings. The preparation method comprises the following steps: pretreating a tungsten electrode substrate; sequentially preparing a sensor layer integrated with a distributed optical fiber sensor, a gradient transition layer which is realized by adopting a four-channel synchronous powder feeding technology and has continuous and gradual components, and a self-adaptive layer which is prepared by adopting a laser-induced in-situ synthesis technology and contains high-entropy rare earth zirconate and an intelligent additive; the self-healing layer contains a triple temperature triggering microcapsule system; and finally, post-processing and function activation are carried out. The prepared coating forms an intelligent response type gradient composite structure from inside to outside, has excellent interface bonding strength, thermal shock resistance and high-temperature chemical stability and has damage self-healing and service state real-time monitoring functions, and the service life of the tungsten cathode under the severe working condition is remarkably prolonged.

The invention discloses a double-ceramic-layer thermal barrier coating of a differentiated columnar crystal structure and a preparation method, and belongs to the technical field of thermal barrier coating corrosion and protection. The invention innovatively discovers and utilizes the double influence of the columnar crystal size on the performance of the coating; the YSZ layer adopts a fine grain structure of 1-1.5 microns, so that the bonding strength and thermal shock resistance of the coating can be obviously improved; and the modified gadolinium zirconate layer adopts a 2-3 [mu] m coarse grain structure, so that the heat conductivity can be reduced, the permeation path of CMAS along a grain boundary can be effectively inhibited, and meanwhile, the modified gadolinium zirconate layer reacts with CMAS to form a compact barrier layer to prevent further permeation of CMAS. Through accurate regulation and control of electron beam physical vapor deposition (EB-PVD) process parameters, differential control of the sizes of the two layers of ceramic columnar crystals is realized, and under the synergistic effect of the two columnar crystal structures with different sizes, the thermal cycle life and CMAS corrosion resistance of the whole coating system in an ultra-high-temperature environment are remarkably prolonged and improved.

In recent years, the aquaculture industry and the ocean ship industry develop rapidly, the requirements for materials such as ships, underwater equipment, fishponds and fishing gears are higher and higher, and the requirements for the performance of the materials are higher and higher. The aquatic product equipment needs to be soaked in water throughout the year, and the requirements for corrosion resistance and adhesion of materials of the aquatic product equipment are high; and meanwhile, higher requirements on the antifouling and self-cleaning capabilities of the material are also put forward. A mainstream super-amphiphobic material taking organosilane as a coupling agent is strict in construction condition, needs to be carried out at specific temperature and humidity, is relatively high in cost, and is not beneficial to sustainable recovery development due to lack of reprocessing or recovery capability. According to the super-amphiphobic composite material for preparing the primer by using the zirconate as the coupling agent, provided by the invention, the adhesion of a coating, especially metal, can be effectively enhanced, the corrosion resistance is remarkably improved, meanwhile, the cost is reduced, and the economy of fishermen engaged in marine aquatic products and even the aquaculture industry is improved.

The invention relates to a barium calcium zirconate titanate-sodium bismuth zirconate lead-free piezoelectric ceramic material and a preparation method and application thereof, the general formula of the ceramic material is (1-x) (Ba0. 85Ca0. 15Zr0. 1Ti0. 9O3)-x (Bi0. 5Na0. 5ZrO3), x is the molar percentage of Bi0. 5Na0. 5ZrO3 in the ceramic material, and x is greater than or equal to 0.30% and less than or equal to 1.80%. Compared with the prior art, the Ba < 0.85 > Ca < 0.15 > Zr < 0.1 > Ti < 0.9 > O < 3 > is subjected to doping modification through Bi < 0.5 > Na < 0.5 > ZrO < 3 >, so that the sintering temperature of the ceramic is reduced, and the targets of energy conservation and emission reduction are met. Meanwhile, the obtained ceramic material has a high piezoelectric constant and low dielectric loss, and has good electrical properties.

The invention relates to the field of high-temperature thermal resistance coatings, in particular to a material selection and preparation process of a low-infrared-transmittance coating, and particularly relates to a preparation method of a high-scattering-rate high-temperature thermal resistance coating, a base material of the high-scattering-rate high-temperature thermal resistance coating is Gd2Zr2O7, and the high-scattering-rate high-temperature thermal resistance coating further comprises a second-phase material; firstly, a required second-phase material is screened on the basis of machine learning in combination with experiments and a first principle, then a PS-PVD gas phase-solid phase codeposition method is adopted, the high-scattering-rate high-temperature thermal resistance coating is prepared, according to the obtained coating, a high-refractive-index-low-refractive-index interface between GdFeO3 particles and Gd2Zr2O7 gas phase columnar crystals can effectively increase scattering of infrared radiation, and the heat resistance of the coating is improved. And the vapor phase and solid phase co-deposited columnar crystals have uniform thermal physical properties, so that excellent coating binding force and excellent anti-sintering performance are provided.

The application discloses a nano-structure thermal protection coating for hydrogen fuel gas turbine and a preparation method thereof. The nano-structure thermal protection coating takes high-temperature alloy as a substrate, and sequentially deposits a bonding bottom layer, a yttrium stabilized zirconium oxide or zirconate intermediate layer and a silicate top layer on the surface of the substrate. The application starts from the design of the coating structure, and aims at the problems of low service temperature and poor water-oxygen corrosion resistance of the existing thermal protection coating for gas turbine. The water-oxygen corrosion resistance function of the silicate material is superimposed on the thermal protection coating for gas turbine, and the coating structure is optimized to form a new thermal protection coating structure resistant to high-temperature corrosion. The new thermal protection coating structure can not only meet more extreme service environments, but also resist water-oxygen corrosion at high temperature. The new thermal protection coating structure is suitable for hydrogen fuel power generation gas turbine, and is also suitable for hydrogen fuel or hydrogen mixed marine engines, hydrogen fuel rocket engines and other hydrogen fuel gas turbines.

The invention belongs to the technical field of building materials, and particularly relates to moderate heat Portland cement and a preparation method thereof, and the cement is composed of Portland cement clinker, gypsum, blast furnace slag and two novel inorganic modified compounds. According to the invention, calcium aluminum silicon nitrogen oxide nanosheets and calcium zirconate coated lithium zinc borosilicate core-shell microspheres are innovatively introduced as functional modifiers. The two-dimensional structure of the two-dimensional structure plays dual roles of nucleation and shielding in the cement hydration process, so that the early strength development can be promoted, and the heat release process can be delayed; the latter generates controllable expansion in a specific hydration stage by virtue of a core-shell structure, so that the shrinkage stress is effectively compensated, and the anti-cracking performance is remarkably improved. The preparation method comprises the working procedures of raw material crushing, segmented grinding, homogenizing stirring and the like. The obtained cement product has excellent early strength, long-term durability and volume stability while keeping the low hydration heat characteristic, and is suitable for construction of major water conservancy projects and infrastructures which have strict requirements on temperature control of mass concrete.

The present application relates to a kind of high radiation resistance of control rod for stack entropy rare earth zirconate ceramic material and its preparation method and application, belong to nuclear reactor neutron absorption rod material technical field.The control rod ceramic material provided by the present application is prepared by using europium oxide, dysprosium oxide, thulium oxide and zirconium oxide as raw materials, according to certain proportion, after ball milling, calcination, green body forming and green body sintering process, and then processing to obtain the middle entropy rare earth zirconate ceramic material that can be applied to control rod.The rare earth zirconate ceramic material has excellent radiation resistance, large neutron absorption cross section and low reactivity value loss, and has high density, excellent thermal conductivity and low thermal expansion coefficient, and shows good application prospect in the field of control rod materials.

The invention relates to the technical field of thermal barrier coating materials, in particular to an unequal-ratio Ce doped pyrochlore and fluorite double-phase high-entropy rare earth zirconate thermal barrier coating material and a preparation method thereof. The chemical composition formula of the thermal barrier coating material provided by the invention is (La < 0.2 > Ce < 0.1 > Sm < 0.1 > Dy < 0.2 > Yb < 0.2 > Sc < 0.2 >) < 2 > Zr < 2 > O < 7 >, (La < 0.2 > Sm < 0.2 > Yb < 0.2 > Sc < 0.2 > Y < 0.1 > Ce < 0.1 >) < 2 > Zr < 2 > O < 7 >, and (La < 0.2 > Ce < 0.1 > Nd < 0.1 > Yb < 0.2 > Lu < 0.2 > Sc < 0.2 >) < 2 > Zr < 2 > O < 7 >. The thermal expansion performance of the prepared coating material is obviously improved under the conditions that the low thermal conductivity, the high mechanical property and the high sintering resistance are met at the same time, and therefore the high-entropy rare earth zirconate thermal barrier coating material of the Ce-containing double-phase structure is promoted, and it is guaranteed that the material is practically applied to the field of thermal barrier coating materials.

The invention discloses a PZT-based high-power piezoelectric ceramic and a preparation method thereof, and belongs to the technical field of piezoelectric ceramic materials. The chemical formula of the antimony manganese-lead zirconate titanate piezoelectric ceramic is 0.05 Pb (Mn < 1 / 3 > Sb < 2 / 3 >) O < 3 >-0.95 Pb < 0.97 > Sr < 0.03 > (Zr < 1 / 2 > Ti < 1 / 2 >) O < 3 + 0.1 wt% of manganese-containing oxide. By doping the manganese-containing oxide into the antimony manganese-lead zirconate titanate matrix, when the piezoelectric coefficient d33 of the prepared antimony manganese-lead zirconate titanate based piezoelectric ceramic reaches 393pC / N, the mechanical quality factor Qm can reach 1708, the electromechanical coupling coefficient is 0.630, the dielectric loss is 0.45%, the Curie temperature is 299 DEG C, and the antimony manganese-lead zirconate titanate based piezoelectric ceramic has excellent comprehensive performance.

The application discloses a sealing coating, a preparation method and application. The sealing coating is attached to an alloy base body, and the sealing coating comprises a metal bonding layer and a composite structure ceramic layer which are sequentially deposited on the alloy base body. The composite structure ceramic layer comprises columnar structures and particles filled in gaps of the columnar structures. The columnar structures and the particles filled in the gaps of the columnar structures independently comprise one or more of YSZ and rare earth zirconate. The porosity of the composite structure ceramic layer is 22% to 40%. The sealing coating has high porosity, low surface Rockwell hardness and high friction coefficient, and the sealing coating has excellent wear resistance. The preparation method of the sealing coating adopts a plasma physical vapor deposition technology, and the process flow is simple.

The application discloses a belt filter for zirconium titanate production wastewater treatment and relates to the field of belt filters.The belt filter comprises an equipment frame body, a group of first compression rollers and a group of second compression rollers which are rotatably arranged in the equipment frame body, and the outer surfaces of the first compression rollers are provided with first filter belts, and the second compression rollers and the first compression rollers are further provided with second filter belts, the first filter belts and the second filter belts are supported by first supporting components and second supporting components, the solid particles in the solid-liquid mixture are dispersed by the rollers in the limiting sleeves, then the solid-liquid mixture of the zirconium titanate is uniformly applied to the upper end surfaces of the first filter belts under the actions of the distribution frame body and the flow dividing component, the solid-liquid separation treatment can be performed by the transmission and extrusion of the first filter belts and the second filter belts, and the first filter belts and the second filter belts can effectively avoid the situation that the solid particles are agglomerated and the first filter belts and the second filter belts cannot uniformly apply pressure to the solid-liquid mixture for dewatering.

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.

The present disclosure provides a photocurable composition, a light condensing layer, and a display device. The photocurable composition includes an acrylic resin, a photoinitiator, and a nanoparticle composite. Raw materials for preparing the nanoparticle composite include an inorganic nanoparticle, a surface of which is provided with active hydroxyl groups, and an organic compound including at least one of a titanate coupling agent and a zirconate coupling agent.

The invention relates to a glaze material with stable color after coloring and sintering for the surface of sanitary ceramics, and belongs to the technical field of ceramics, the glaze material comprises a zirconium compound, vanadium zirconium blue, a metal oxide, wollastonite, carboxymethyl cellulose, sodium tripolyphosphate and deionized water; the zirconium compound comprises neodymium zirconate, zirconium phosphate and zirconium silicate; the metal oxide comprises zinc oxide. Neodymium zirconate selected in the invention can absorb light with a specific wavelength, is adjustable in color and is not easy to decompose at a high temperature; the vanadium zirconium blue is excellent in high-temperature stability and good in compatibility with zirconium silicate; zirconium phosphate can chelate transition metal ions, namely vanadium ions, in vanadium zirconium blue, and charge transfer and color generation are stabilized. Zirconium silicate can wrap coloring ions in a system and reduce migration of the coloring ions in the glaze; therefore, the four components are combined, so that the glaze has color stability effectively. In addition, zirconium silicate, zinc oxide and wollastonite can synergistically improve the smoothness of the glaze from different aspects, and the appearance attractiveness of sanitary ceramics using the glaze is improved.

A composition comprising a rare earth-doped zirconium / hafnium oxide is provided that has a defect-fluorite structure or a pyrochlore structure. The rare earth-doped zirconium / hafnium oxide has a formula: (Ln1aLn2aLn3aLn4aLn5b)2M2O7 where each of Ln1, Ln2, Ln3, Ln4, and Ln5 is a different rare earth element such that Ln1 and M have a first atomic radius ratio that is 1.35 to 1.45, Ln2 and M have a second atomic radius ratio that is 1.35 to 1.45, Ln3 and M have a third atomic radius ratio that is 1.46 to 1.78, and Ln4 and M have a fourth radius ratio that is 1.46 to 1.78; a is 0.2 or 0.25; b is 0.2 when a is 0.2, and b is 0 when a is 0.25; and M is Zr, Hf, or a mixture thereof. Methods of forming a coating that includes this composition, along with the resulting coated components, are also provided.

The invention relates to the technical field of thermal protection coatings, in particular to high-entropy rare earth zirconate oxide powder as well as a preparation method and application thereof. The invention provides a preparation method of high-entropy rare earth zirconate oxide powder, which comprises the following steps: mixing A2O3 and ZrO2 to obtain a mixed material; sequentially carrying out vacuum sintering, ball milling and spray granulation on the mixed material to obtain the high-entropy rare earth zirconate oxide powder, a in the A2O3 is five elements of La, Nd, Sm, Eu, Ga, Y, Ce and Yb in an equal molar ratio. The preparation method is simple, and the prepared high-entropy rare earth zirconate oxide powder can resist the temperature of 1200 DEG C or above.

The invention relates to the technical field of coatings, in particular to a ladle slag-resistant coating based on a composite magnesium-based high-temperature-resistant coating and a preparation method of the ladle slag-resistant coating. The coating is prepared from fused magnesite, composite modified graphite, silicon carbide whiskers, calcium zirconate powder, a sodium silicate solution, aluminum sol, an aluminum dihydrogen phosphate solution, calcium-zirconium copolymerized complex sol, phenolic resin, sodium hexametaphosphate and the like according to a specific proportion. The graphite surface is subjected to multi-component composite modification, and a plurality of high-temperature binders and interface barrier materials are prepared step by step, so that high compactness, excellent slag corrosion resistance and thermal shock resistance of the coating are realized. The prepared coating can effectively block slag liquid permeation under the extremely high temperature and strong alkaline slag environment, the service life and safety of the ladle lining are remarkably improved, and the coating is suitable for the high-temperature metallurgical industry such as steel and iron.

The invention belongs to the technical field of piezoelectric ceramics, and particularly relates to a high-temperature magnesium bismuth titanate-lead zirconate titanate piezoelectric ceramic material and a preparation method thereof. Comprising the following chemical general formula: 0.65 Bi (Mg < 0.51 > Ti < 0.49 >) O < 3 >-0.35 Pb (Zr < x > Ti < 1-x >) O < 3-y > wt% La2O3, wherein x is equal to 0.01 to 0.7, and y is equal to 0.01 to 2. The piezoelectric ceramic material is prepared from the following raw materials: Pb3O4, TiO2, ZrO2, Nb2O5, Bi2O3, MgO and La2O3. The novel piezoelectric ceramic system has higher Curie temperature of 460-520 DEG C, and can work in a high-temperature environment of 260-400 DEG C. The novel piezoelectric ceramic system is suitable for being applied to a high-temperature sensor piezoelectric device.

This invention relates to the field of high-temperature protective coatings, and particularly to a composite coating and its preparation method. The composite coating provided by this invention includes an adhesive layer and a ceramic coating; the ceramic coating comprises a composite ceramic material; the composite ceramic material has a core-shell structure, with the core being high-entropy rare-earth zirconate and the shell being high-entropy rare-earth aluminate. During CMAS corrosion, the easily soluble high-entropy rare-earth aluminate in the outer shell can protect the high-entropy rare-earth zirconate grains in the core, forming a more significant difference in dissolution kinetics; simultaneously, the core-shell structure effectively reduces the high-temperature thermal shock experienced by the high-entropy rare-earth zirconate in the core, thereby protecting the structural integrity of the high-entropy rare-earth zirconate. On the other hand, the high-entropy rare-earth aluminate in the outer shell preferentially contacts and reacts with the high-temperature CMAS melt, inducing the precipitation of the high-entropy rare-earth aluminate garnet phase, constructing a dense garnet / high-entropy rare-earth zirconate composite barrier layer in situ, significantly reducing the penetration of molten salt.

The invention provides a high-temperature-resistant far infrared radiation ceramic coating, a ceramic coating and a preparation method, and relates to the technical field of surface engineering. The high-temperature-resistant far infrared radiation ceramic coating disclosed by the invention is prepared from the following raw materials in parts by weight: 12 to 22 parts of lutetium pyrotantalate; 10 to 16 parts of hafnium boride; 8-14 parts of nitrogen aluminum titanium; 9 to 15 parts of gadolinium zirconate; 4 to 7 parts of molybdenum disilicide; 2 to 5 parts of samarium hexaboride; 6 to 11 parts of pyrochlore type zirconium tungstate; 1 to 2.5 parts of a sintering aid; 0.5 to 1.5 parts of carbon nano onion; 3 to 6 parts of bismuth vanadate; 5 to 9 parts of phosphotungstic acid; and 1-3 parts of lithium molybdate. According to the high-temperature-resistant far infrared radiation ceramic coating disclosed by the invention, various rare earth compounds and refractory metal compounds are introduced to form a unique multi-phase composite system, and all the components generate a synergistic effect in an optimized interval, so that the thermal stability, thermal shock resistance and mechanical strength of the coating are remarkably improved; and finally, long-acting protection under extreme working conditions of high temperature, corrosion and abrasion of the water cooling wall of the boiler is realized.

The present application relates to the field of chemical engineering. Particularly disclosed are titanium dioxide with a multi-component composite coating, and a preparation method therefor. The preparation method for the titanium dioxide comprises: S1, mixing a titanium dioxide slurry with a silicate solution, and then controlling the pH value by adding an inorganic acid solution twice; S2, adding a zirconate solution within a certain period of time, and controlling the pH value by using an alkali solution; S3, adding a meta aluminate solution within a certain period of time, and simultaneously adding an inorganic acid solution in a countercurrent manner to control the pH value; S4, continuously adding the meta aluminate solution within a certain period of time, and simultaneously adding an aluminum sulfate solution in a cocurrent manner to control the pH value; and S5, adjusting the pH value at the end point, continuing to conduct aging under agitation, and then conducting homogenizing, filtering, washing, dehydrating, drying, crushing and an organic treatment. The titanium dioxide prepared by the present application has relatively good optical properties and weather resistance, and can meet the development requirements of high-weather-resistance coatings for ships, bridges, solar energy, wind power and other emerging environmental protection applications.

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 application relates to a ceramic thermal protection structure repairing agent, a preparation method thereof and a repairing method, and belongs to the technical field of ceramic thermal protection structure repairing agent preparation. The application aims at solving the problem of on-site repairing of a structure composed of 1500 DEG C-resistant ceramic fiber heat insulation tiles and surface coatings. The main raw materials of the repairing agent include 40-60 parts of phosphoric acid, 14-30 parts of phosphate, 10-20 parts of aluminum hydroxide, 7-15 parts of magnesium oxide, 1-3 parts of zirconium oxide, 2-5 parts of polymer precursor ceramic, 0.5-2 parts of rare earth zirconate, 1-3 parts of high-entropy ceramic powder, 10-100 parts of an organic solvent and 10-100 parts of deionized water. The repaired ceramic thermal protection structure has excellent high-temperature resistance, and the repairing difficulty and cost of the ceramic thermal protection structure are remarkably reduced.

This invention discloses a superhydrophobic composite passivation film and its preparation method, belonging to the field of coating preparation technology. The invention involves sequentially forming a zirconium-based chemical conversion film and a fluorinated functionalized silica layer on a substrate surface to obtain the superhydrophobic composite passivation film. The zirconium-based chemical conversion film and the fluorinated functionalized silica layer are connected by Si-O-Zr or Si-O-Al covalent bonds. The zirconium-based chemical conversion film is obtained by deposition through dissociation coordination and interfacial redox reactions using fluorozirconate, fluoride, vanadate, and manganese nitrate as raw materials; the fluorinated functionalized silica layer is obtained by spraying nano-silica after fluorination and functionalization with perfluorosilane. This invention organically couples an inorganic passivation film with a superhydrophobic micro / nano structure, resulting in a superhydrophobic composite passivation film with a static water contact angle ≥150° and a static oil contact angle ≥150°, achieving dual repulsion of water and oil, and reducing the emission of volatile organic compounds during the preparation process.

The invention relates to the field of preparation of thermal barrier coatings through electron beam physical vapor deposition, and discloses a preparation method of ceramic target solid solution particles and a preparation method of a zirconium acid gadolinium ytterbium ceramic target. Ceramic target material solid solution particles for preparing the zirconium acid gadolinium ytterbium ceramic target material are prepared from the following components in parts by mass: 31 to 55 parts of zirconium oxide, 40 to 60 parts of gadolinium oxide, 4 to 8 parts of ytterbium oxide, 0.3 to 0.5 part of dispersing agent and 0.5 to 0.7 part of binding agent. The gadolinium ytterbium zirconate ceramic target prepared from the ceramic target solid solution particles not only meets the use requirements of electron beam physical vapor deposition, but also has higher use temperature, lower heat conductivity coefficient and longer service life compared with the traditional thermal barrier coating.