147 results about "Zirconia ceramic" patented technology

The invention discloses a preparation method and application of high-toughness anti-aging zirconia ceramic, and relates to the technical field of ceramic materials.The preparation method comprises the following steps that nano monoclinic zirconia with the D50 being 20-50 nm and the mass fraction being 99.7-99.8 wt%, aluminum oxide with the D50 being 200-400 nm and the mass fraction being 0.2-0.3 wt% and a dispersing agent are taken, and the dispersing agent accounts for 1-1.5 wt% of the total mass of powder; the preparation method comprises the following steps: by taking a high-purity aluminum oxide grinding ball as a grinding medium, stirring and grinding for 2-4 hours at the rotating speed of 700-1000r / min, and then grinding for 1-2 hours at the sanding rotating speed of 1500-2000r / min to obtain mixed slurry; nano monoclinic zirconia is adopted as a raw material, aluminum oxide and a dispersing agent are added for co-grinding, Y2O3 is deposited on the surface of ATZ composite powder in a magnetron sputtering mode, and a Y2O3 deposition layer can inhibit conversion from t-zirconia to m-zirconia, so that the anti-aging performance of the zirconia ceramic is improved, and the service life of the zirconia ceramic is prolonged. And the nano monoclinic zirconium oxide is directly mixed and ground with the aluminum oxide, so that the zirconium oxide raw material is more easily subjected to stress-induced phase change, and the toughness performance of the zirconium oxide ceramic is improved.

The zirconium oxide ceramic modified by the graphene / zirconium oxide calcined composite microspheres is prepared from stable zirconium oxide powder A and the graphene / zirconium oxide calcined composite microspheres accounting for 25 wt% or below of the total ceramic powder through mixing, compression molding and sintering, the preparation method of the graphene / zirconium oxide calcined composite microspheres comprises the following steps: preparing stable zirconium oxide powder B, graphene and a solvent into slurry; and carrying out ball milling, spray drying and calcination to obtain the graphene / zirconium oxide calcined composite microspheres. According to the present invention, the graphene / zirconium oxide calcination composite microsphere and the SPS sintering are performed, such that the dispersed graphene / zirconium oxide two-phase structure region exists in the obtained zirconium oxide composite ceramic so as to consume the large amount of the crack growth energy, and the significant toughening effect is provided.

The invention relates to the technical field of fluid conveying equipment, in particular to a corrosion-resistant composite ceramic isolation sleeve for a magnetic drive pump, a preparation method and the magnetic drive pump. By adopting the specific compound proportion of the lithium oxide ceramic and the zirconium oxide ceramic, the magnetic drive pump isolation sleeve has excellent corrosion resistance and mechanical strength, is particularly suitable for conveying nitrogen tetroxide and other strong corrosive media, and remarkably improves the service life and the reliability of the magnetic drive pump isolation sleeve. The preparation method provided by the invention ensures that the material ratio is accurate, the structure is uniform, the performance is stable, and the method is suitable for large-scale production. The specific number of pairs of magnetic poles is adopted to be matched with the optimized isolation sleeve, so that the maximization of magnetic torque and the minimization of eddy-current loss are realized, and the transmission efficiency and the operation stability of the magnetic drive pump are integrally improved.

This utility model provides a cutting cover for processing zirconia ceramic blocks, comprising: a processing table, on the upper surface of which a processing support is fixedly connected, and a cutting tool holder and a positioning mechanism are mounted on the processing support; a cutting cover body, mounted on the processing table, with a door slidably mounted at the front end of the cutting cover body, an observation window mounted on the door body, and an electric push rod fixedly mounted on the inner wall of the cutting cover body, the output end of which is fixedly connected to the upper end of the door body; and a dust collection unit, mounted on the processing table and the cutting tool holder. This cutting cover for processing zirconia ceramic blocks shields the workpiece and equipment during the cutting process, and, with the cooperation of the dust collection unit, collects the dust generated during cutting, avoiding potential safety hazards during cutting and preventing dust pollution of the working environment, thus protecting the health of operators.

The graphene / zirconia sintered composite microsphere modified zirconia ceramic is prepared by mixing, pressing and sintering stable zirconia powder A and graphene / zirconia sintered composite microspheres accounting for less than 25wt% of the total ceramic powder; the preparation method of the graphene / zirconia sintered composite microspheres is that stable zirconia powder B, graphene and a solvent are matched into a slurry; the graphene / zirconia sintered composite microspheres are obtained through ball milling, spray drying and calcination. The graphene / zirconia sintered composite microspheres and SPS sintering are used in the application, the obtained zirconia composite ceramic has dispersed graphene / zirconia two-phase structure regions in the interior, can consume a large amount of energy of crack propagation, and has a significant toughening effect.

The invention provides a brazing method suitable for a medical implantable ceramic tube shell. The brazing method comprises the steps that a zirconia ceramic workpiece is cleaned; performing vacuum magnetron sputtering on the surface of the cleaned zirconia ceramic workpiece, and sequentially depositing a bottom metal layer and a surface metal layer to form a metalized layer; performing vacuum heat treatment on the zirconia ceramic workpiece with the metalized layer so as to eliminate the internal stress of the metalized layer; acid pickling is conducted on the surface of the pure titanium metal piece to remove an oxidation film, and drying treatment is conducted; placing a gold solder between the metallization layer and the pure titanium metal piece, and assembling an assembly to be welded; according to the method, a to-be-welded assembly is placed in a vacuum brazing furnace to be brazed, preset heating, heat preservation and cooling procedures are executed, and high-strength, high-airtightness and excellent-biocompatibility connection between zirconia ceramic and pure titanium is achieved through an optimized surface metallization process, stress relief treatment and a strictly-controlled full-process vacuum brazing process.

The invention relates to the technical field of special ceramic product preparation, and discloses a zirconium oxide secondary densification process in special ceramic part processing, which comprises the following steps: a vacuum pressure infiltration step: driving an aluminosilicate-based precursor to infiltrate into microcracks on the surface layer of a zirconium oxide workpiece by using pressure difference; a phase change interval critical rate heating step: controlling the heating rate to match the volume shrinkage of the zirconium oxide from monoclinic phase to tetragonal phase transformation, and generating a grain boundary gap to drive the precursor to deeply permeate; an in-situ reaction densification step: inducing the precursor in-situ reaction at high temperature to generate an aluminosilicate solid phase and filling crystal boundary trident points; according to the method, through a phase change coupling permeation mechanism, reactive healing of microcracks is achieved on the premise that abnormal growth of crystal grains is not caused, and the fracture toughness and the anti-aging performance of the zirconia ceramic are improved.

The application provides a zirconia composite powder, a preparation method of the zirconia composite powder, a zirconia ceramic and a dental restoration. The zirconia composite powder comprises zirconia matrix particles and cubic phase zirconia particles, the zirconia matrix particles comprise monoclinic phase zirconia and tetragonal phase zirconia, and at least part of the cubic phase zirconia particles form an interface with the zirconia matrix particles in an atomic scale. After sintering of the composite powder in the above manner, the mechanical strength and toughness required by the dental restoration can be obtained, and the hardness is reduced, so that the hardness matching with the opposite tooth is improved, and the pathological abrasion risk is reduced.

The invention discloses a method for preparing porous zirconia ceramic by low-temperature sintering, which comprises the following steps: S1, mixing citric acid, zirconium acetylacetonate and absolute ethyl alcohol according to a certain proportion to obtain a colloidal solution A; s2, mixing inorganic yttrium salt, inorganic zirconium salt and water according to a certain proportion to obtain a mixed solution B; s3, slowly adding the colloidal solution A into the mixed solution B obtained in the step S2; s4, drying the colloidal solution to obtain a dried precursor; s5, carrying out low-temperature calcination on the dried precursor to obtain nano yttrium-stabilized zirconia powder; s6, performing ball milling and spray granulation on the powder to obtain spherical granulation powder with uniform particle size; s7, carrying out dry pressing molding and cold isostatic pressing molding to obtain a to-be-sintered ceramic biscuit; and S8, sintering in a muffle furnace to obtain the final porous zirconia ceramic. After the powder is subjected to ball milling, granulation, dry pressing and cold isostatic pressing, the zirconia ceramic which is uniform in pore diameter and has nano-scale pores is prepared through low-temperature sintering.

The invention relates to the technical field of electronic cigarette heating elements, in particular to a flexible ceramic-based electronic cigarette heating wire and a preparation method thereof.The flexible ceramic-based electronic cigarette heating wire comprises a zirconia ceramic fiber matrix, the zirconia ceramic fiber matrix is composed of tetragonal phase zirconia co-stabilized by 3-5 mol% of yttrium oxide and 1-2 mol% of cerium oxide, the diameter of zirconia ceramic fibers is 200-400 nm, and the grain size is 80-120 nm; the surface of the zirconia ceramic fiber matrix is covered with the metal film layer, and the metal film layer comprises a zirconium transition layer with the thickness of 2-3 nm; the iron-chromium-aluminum alloy layer comprises the following components in percentage by weight: 68 to 71 percent of iron, 22 to 24 percent of chromium, 5.5 to 6.2 percent of aluminum, 0.2 to 0.28 percent of yttrium and the balance of inevitable impurities; and the thickness of the iron-chromium-aluminum alloy layer is 300-400 nm, and the resistivity of the iron-chromium-aluminum alloy layer is 1.3-1.4 mu omega.m.

The invention relates to the field of wear-resistant materials and scrapers, in particular to a metal ceramic composite material, a preparation method and a wear-resistant scraper, and the metal ceramic composite material comprises the following chemical elements in parts by weight: melt-drawn steel fibers and zirconia ceramic powder; the metal ceramic composite material is formed by compounding the melt-drawn steel fibers and the zirconia ceramic powder, and has excellent toughness of the melt-drawn steel fibers and high hardness and high temperature resistance of a ceramic material; according to the preparation method, melt-drawn steel fibers and zirconia ceramic powder components can be uniformly combined, internal pores of the material are effectively reduced, and the structural compactness and stability are improved; according to the wear-resistant scraper machine, the base plate is made of the metal ceramic composite material, the comprehensive advantages of high wear resistance, high temperature resistance and impact resistance of the material are fully played, and the friction loss in the running process of the rack and the chain is effectively reduced in cooperation with the structural design of the wear-resistant assembly fixed through the bolts.

A method for fabricating a negative Poisson's ratio Miura origami-structured zirconia ceramic includes the following steps: Designing a unit cell structure using 3D modeling software; horizontally arranging the unit cells to obtain a single-layer, thicknessless Miura origami structure; mirroring, thickening, and merging the single-layer, thicknessless Miura origami structure to obtain a multi-layered Miura origami structure; importing the model into slicing software for slicing and then 3D printing to form a green body; placing the cleaned green body in a muffle furnace for degreasing and sintering; and obtaining the negative Poisson's ratio Miura origami-structured zirconia ceramic after sintering. By using 3D printing to achieve the stacked Miura origami structure and then sintering it, the mechanical metamaterial of origami is combined with ceramic materials. This not only enhances the toughness of ceramic materials through special structures but also solves the problem of traditional ceramic preparation methods being unable to fabricate complex structures. It features convenience, high precision, and customizability.

A black zirconia ceramic is composed of a colorant and a base material, characterized in that the mass percentage of the colorant is 2.0-5.0%, and the mass percentage of the base material is 95.0-98.0%; the colorant is composed of CoO, NiO and Fe2O3, and the mass ratio of CoO, NiO and Fe2O3 in the colorant is CoO:NiO:Fe2O3=0.5-1:14-18:32-36; and the base material is 3mol% yttria partially stabilized zirconia. The application further provides a preparation method of the black zirconia ceramic. The black zirconia ceramic has uniform and stable color, excellent mechanical properties, and relatively low preparation cost.

This invention discloses a method for simulating and testing ceramic sintering stress and a method for reducing ceramic sintering stress. The simulation and testing method includes: 1. Measuring the grain size, relative density, and geometric dimensions before and after sintering; 2. Using Abaqus to establish the ceramic geometry and construct a transient heat conduction model; 3. Establishing the viscoelastic constitutive equation for the sintering shrinkage deformation of zirconia ceramics and constructing a sintering shrinkage model; 4. Sequentially coupling the transient heat conduction model and the sintering shrinkage model to perform joint simulation of solid-state sintering, obtaining the simulation results of ceramic sintering stress. The method for reducing ceramic sintering stress includes: 5. Establishing a finite element model of ceramic sintering shrinkage with proportionally distributed grain sizes and calculating the average sintering stress distribution of the grain size proportional distribution model; 6. Comparing the average sintering stress of sintering shrinkage models with different grain size proportions to determine the method for reducing sintering stress. This invention improves ceramic sintering quality and production efficiency.

The application discloses a kind of composite zirconia ceramic microbeads and preparation method thereof, belong to zirconia ceramic microbead technical field.The composite zirconia ceramic microbead is prepared by 75~85 mass parts yttrium stabilized tetragonal zirconia, 15~25 mass parts alumina, 0.2~1 mass parts silicon dioxide, 0.2~0.5 mass parts magnesium oxide, 2~5 mass parts modified silicon nitride.The present application uses yttrium stabilized tetragonal zirconia as base material, supplemented with alumina and modified silicon nitride, uses the high hardness of alumina, the good combination of modified silicon nitride in formula to improve the overall wear resistance, the results show that the addition of modified silicon nitride is conducive to the formation of uniform and dense microstructure can reduce the probability of grain drop, thereby reducing the grinding of microbead.The composite zirconia ceramic microbead prepared by the present application has high hardness and low self-abrasion, and the raw materials are widely available and the preparation method is simple, so it has good market prospect.

The invention relates to the technical field of grinding and polishing, in particular to a corrosion-resistant and wear-resistant liquid slip ring for precise grinding and polishing. The slip ring comprises a static part and a rotating part which are made of polyether-ether-ketone, and a wear-resistant sealing assembly comprising a zirconia ceramic wear-resistant spacer bush and a fluororubber sealing piece. All flow passage components are made of PEEK materials, so that pollution of metal ions to grinding fluid is completely eradicated; the high-hardness and high-smoothness ceramic wear-resistant spacer bush is used as a core rotating pair, so that the abrasive wear resistance is greatly improved; a multi-layer sealing protection system composed of a static seal, a fluororubber framework oil seal dynamic seal and an auxiliary isolation structure composed of small gaps is constructed, particles can be effectively retarded, impact can be effectively buffered, and it is ensured that long-term, stable and clean grinding fluid transmission is achieved under the working conditions of strong corrosion and high abrasion.

The invention discloses a preparation method of stable pink erbium ion-doped zirconia ceramic with photochromic luminescence and a product thereof, 2-6 mol% yttria-stabilized zirconia (2-6YSZ) is used as a raw material, an Er (NO3) 3 solution is used as a coloring ion solution, Er < 3 + > ions are doped, and the stable pink erbium ion-doped zirconia ceramic with photochromic luminescence is obtained. The erbium ion doped zirconia ceramic which has a stable single-phase structure, is pink and has photochromic luminescence is successfully prepared through a high-temperature sintering process. The zirconia ceramic not only can generate a relatively fast photoluminescence phenomenon and has obvious color conversion, but also has relatively strong polychromatic photoluminescence performance. The product obtained by the invention has wide application prospects, and can be applied to intelligent terminal equipment, such as polychromatic photochromic luminescent ceramic backboards, information storage, encryption, ultraviolet detection, temperature monitoring and the like.

The application relates to the technical field of ceramic materials, in particular to a preparation method of sub-millimeter zirconia microbeads. The preparation method comprises the following steps: adding isobutene-maleic anhydride copolymer, butyl glycidyl ether and ammonium citrate into water, then adjusting the pH of the solution to be alkaline by using an alkali solution, adding a defoaming agent and yttrium oxide stabilized zirconia powder to obtain a premix solution; ball milling the premix solution, then removing bubbles in a vacuum to obtain a zirconia slurry; injecting the zirconia slurry into an oily medium to obtain zirconia ceramic microbead green bodies; cleaning the zirconia ceramic microbead green bodies, then drying, gradient temperature calcining and self-grinding to obtain sub-millimeter zirconia microbeads; the application only needs to add three kinds of organic matters to form gel microspheres, and the content of the organic matters is small and the organic matters are non-toxic. The application has high finished product yield, simple operation, low cost, uniform particle size of the prepared zirconia microbeads, and high compactness and mechanical properties.

The utility model discloses a kind of high-stability corrosion-resistant single-point mooring ultra-thin wall bearing devices, including outer ring body, reinforcing support plate inner wall middle position is equipped with oil filler, and reinforcing support plate inside upper and lower edge is equipped with splicing slot, splicing slot inner wall is inserted and is installed with mounting block, and mounting block one side is rotatably embedded and installed with sliding bead, mounting block and reinforcing support plate one side are inserted and installed with first fixed bolt.This kind of high-stability corrosion-resistant single-point mooring ultra-thin wall bearing device can be side supported by reinforcing support plate, and can be stably rotated by sliding bead, mounting block, and the effect is good, and high-efficiency corrosion-resistant treatment can be carried out by the zirconia ceramic ball material quality of ball and the double-layer structure of nano ceramic coating and organic fluorocarbon coating coating, can adapt to complex marine environment, and high-efficiency heat dissipation can be carried out while being fixed by bolt seat, heat-conducting block and second fixed bolt, and the effect is good.

This invention discloses a method for preparing a strontium titanate modified layer on the surface of zirconia based on an impregnation-heat treatment method, comprising: (1) mixing titanium sulfate, urea and water to obtain a precursor liquid A, placing zirconia ceramic in the precursor liquid A, heating to boiling and maintaining for a period of time, then removing the zirconia ceramic, and after heat treatment A, preparing a titanium dioxide film on the surface of zirconia; (2) mixing H2O2 aqueous solution, ammonia and deionized water, adding metatitanic acid and stirring to dissolve, obtaining a precursor liquid B, placing the zirconia with the titanium dioxide film in the precursor liquid B, and allowing it to stand and react for a period of time at room temperature, depositing zirconia modified with a titanium dioxide precursor layer; (3) dissolving strontium acetate, or a mixed salt composed of calcium acetate and / or magnesium acetate and strontium acetate in deionized water to obtain an impregnation treatment solution, placing the zirconia modified with the titanium dioxide precursor layer in the impregnation treatment solution, allowing it to stand and react for a period of time, and then removing it, and after heat treatment B, preparing a strontium titanate modified layer on the surface of zirconia. The strontium titanate layer prepared on the surface of zirconia ceramic in this invention is tightly attached to the zirconia substrate and has high hydrophilicity, which is conducive to the adhesion of proteins and cells in the human body. At the same time, it can release active factors such as strontium ions for a long time to promote bone formation and bone regeneration at the implantation site, ultimately enhancing the osseointegration capacity of the zirconia implant.

The invention relates to the technical field of tubular oxygen sensors for vehicles, in particular to a ceramic sensitive element and a preparation method and application thereof.The preparation method of the ceramic sensitive element comprises the steps that S2, platinum group metal slurry is coated on the outer wall of a zirconium oxide semi-ceramic substrate, co-sintering is conducted, and the ceramic sensitive element is obtained; the outer wall of the zirconia ceramic matrix is covered with a first platinum group metal layer; s3, coating the outer wall of the first platinum group metal layer with an electrode material, coating the outer wall, the inner wall and the bottom end of the zirconia ceramic matrix with the electrode material, and sintering to form an outer electrode ring layer on the outer wall of the first platinum group metal layer and form an outer electrode lead on the outer wall of the zirconia ceramic matrix, so as to obtain the electrode. An inner electrode ring layer and an inner electrode lead are formed on the inner wall of the zirconia ceramic substrate, and a first bottom electrode and a second bottom electrode are arranged at the bottom end of the zirconia ceramic substrate; and S5, coating the platinum group metal salt solution on the outer wall of the protective coating, and sintering to form a second platinum group metal layer on the outer wall of the protective coating.

The invention provides a fluorescent zirconia composition and a preparation method and application of a fluorescent zirconia porcelain block. The fluorescent zirconium oxide composition is prepared from the following components in percentage by mass: 90 to 95 percent of inorganic powder, 3 to 10 percent of organic matter and 1 to 5 percent of fluorescent component. Wherein the inorganic powder comprises zirconium oxide, hafnium oxide, aluminum oxide, yttrium oxide, titanium oxide and manganese oxide. The organic matter comprises a dispersing agent, an adhesive, a plasticizer and a defoaming agent. The fluorescent component comprises cerium oxide, iron oxide and erbium oxide. Through mutual cooperation of the components, the obtained fluorescent zirconia ceramic block has a fluorescent effect and enhanced toughness at the same time. Moreover, the preparation method disclosed by the invention is simple, convenient to operate and suitable for large-scale industrial production.

According to the low-temperature rapid sintering nanometer zirconia ceramic restoration and the preparation method thereof, raw material powder is specifically set and treated, and the ultra-rapid sintering heating rate of about 500 DEG C / min is achieved; the nano zirconia ceramic restoration with fine and uniform overall crystal grains, high density, high mechanical property and stable hydrothermal environment can be obtained at a relatively low temperature of about 1200 DEG C for a short heat preservation time; the ultra-fast low-temperature sintering not only greatly shortens the sintering time, but also can ensure the characteristics of small occupied area of sintering equipment and short overall preparation period, and the chair-side preparation is really realized, so that the prosthesis and the preparation method are easy to popularize and use and suitable for clinical popularization.

The application discloses a kind of core-shell structure nanometer powder toughened zirconia ceramics and preparation method thereof, belong to ceramic material technical field, the method includes using three-dimensional network gel to realize washing-free co-precipitation method to prepare high-activity, ZrO2@SiO2Core-shell structure nanometer zirconia raw material powder, and stable agent is mixed ball milling, drying, sieving, shaping, cold isostatic pressing and gets green body, green body is placed in vacuum furnace and sintering, annealing and obtains toughened zirconia ceramic target product, realizes the efficient preparation of jade quality feeling simulation ceramic tooth of integral penetration.The application avoids the repeated washing steps of precursor in the traditional co-precipitation preparation process, reduces the introduction of impurities, the sintering temperature is lower, the powder yield is high, the process is simple, the cost is low, and is suitable for the industrial production of toughened zirconia ceramics.

The invention provides zirconium oxide composite powder and a preparation method thereof, zirconium oxide ceramic and a dental prosthesis. The zirconium oxide composite powder comprises zirconium oxide matrix particles and cubic-phase zirconium oxide particles, the zirconium oxide matrix particles comprise monoclinic-phase zirconium oxide and tetragonal-phase zirconium oxide, and at least part of the cubic-phase zirconium oxide particles and the zirconium oxide matrix particles form an atomic-scale combined interface. The powder compounded in the manner is sintered, so that the reduced hardness can be obtained while the mechanical strength and toughness meeting the requirements of the dental restoration are obtained, the hardness matching property with jaw teeth is improved, and the pathological wear risk is reduced.

The present application relates to a kind of zirconia porcelain block and its preparation method and application, including inner zirconia block and the outer zirconia block of wrapping up inner zirconia block, outer zirconia block includes multiple zirconia layers sequentially laid according to the order of transmittance size and in vertical direction, and the thickness of the zirconia layer with maximum transmittance and the thickness of the zirconia layer with minimum transmittance are all greater than the thickness of the zirconia layer between maximum transmittance and minimum transmittance;The transmittance of inner zirconia block and the maximum transmittance in multiple zirconia layers are same, and the bottom end of inner zirconia block is in the zirconia layer with minimum transmittance, and the height of inner zirconia block is not less than 2 / 3 of the height of outer zirconia block;The preparation method and application of the porcelain block are simultaneously disclosed.The present application can be more real to the structure, color and light transmittance of true tooth, improve the service life and the comfort of use of tooth.

The utility model discloses a micro -type reaction furnace, including the shell, is equipped with the heat preservation cavity on the shell, and the heat preservation cavity is filled with the heat preservation material, the inside of shell is equipped with heating chamber, and the heat preservation cavity covers heating chamber in, the heat conduction component, the heat conduction component is assembled in heating chamber, is equipped with the reaction chamber on the heat conduction component, and the both sides of reaction chamber are equipped with the heating groove, and the heat conduction component still is equipped with the assembly groove, and the assembly groove is linked together with heating groove, heating rod, heating rod installs in heating groove. The utility model has the beneficial effects that: this micro -type reaction furnace passes through the light -duty aluminum alloy shell, the heat preservation material + zirconia ceramic piece, brass heat conduction component and the collaborative design of "K type thermocouple + temperature controller", effectively solved the traditional reaction furnace volume huge, the problem of uneven heating, the poor heat preservation effect, the low temperature control precision, especially applicable to the fine heating reaction scene of micro -type sample, has convenient operation, temperature control precision, high thermal efficiency, compact structure and so on the remarkable advantage.

The application discloses a preparation method of a zirconia ceramic rod and belongs to the technical field of ceramic rods. The preparation method comprises the following steps: step 1, hydroxyapatite is added into distilled water, the temperature is increased to 50-60 DEG C, phosphate ester is added and stirred, suction filtration is carried out, and drying is carried out to obtain modified hydroxyapatite; step 2, zirconia, yttrium oxide, titanium oxide, the modified hydroxyapatite and a binder are mixed to obtain a mud; step 3, the mud is extruded to obtain a blank, drying and sintering are carried out, and a zirconia ceramic rod is obtained. The raw materials are reasonably matched and selected, the zirconia ceramic rod with high compressive strength and excellent wear resistance is prepared, the cost is economic, and industrial production is met.

The invention discloses an alumina composite zirconia ceramic ball and a preparation method thereof, and relates to the technical field of ceramics. The preparation method of the alumina composite zirconia ceramic ball comprises the following steps: mixing zirconia, alumina, cerium oxide, yttrium oxide and sodium oxide according to a specific ratio, and carrying out wet grinding, spray granulation, rolling molding, sintering and other processes to prepare the alumina composite zirconia ceramic ball. Compared with the prior art, the alumina composite zirconia ceramic ball prepared by the invention improves the hardness of a zirconia grinding medium, keeps good wear resistance, has excellent aging resistance, and solves the problems of high grinding wear, high impurity content introduction and short service life of the existing high-hardness material to a certain extent.

This utility model discloses a polishing device for producing zirconia ceramic blocks. The polishing device includes: a base; an intermediate support body fixedly connected to the top of the base; a polishing pot body disposed inside the intermediate support body, with a vibration motor installed at the center of the bottom of the polishing pot body and an integrally connected mounting ring to the inner top of the polishing pot body; a top cover connected to the inner side of the mounting ring, with a handle fixedly connected to the top of the top cover; and an elastic mechanism disposed between the intermediate support body and the polishing pot body. This application, by setting an elastic mechanism between the intermediate support body and the polishing pot body, allows the polishing pot body to vibrate in a suspended manner, greatly enhancing the amplitude and uniformity of the vibration. This elastic support structure allows the polishing pot body to vibrate freely in multiple directions, promoting more thorough and uniform contact and friction between the internal diamond abrasive and the zirconia ceramic block, significantly improving the polishing efficiency and quality.