160 results about "Ceramic particle" patented technology

The application discloses a kind of water-based ceramic slurry adhesives for ceramic-coated polyolefin separators, and relates to the technical field of polyolefin separators.The adhesives prepared by the preparation method provided by the application can promote the uniform dispersion of inorganic ceramic particles in the ceramic slurry, and the excellent adhesion of the adhesives can firmly bond the inorganic ceramic particles to the separators, preventing the phenomenon of powder falling during production, transportation and use, thereby ensuring the improvement effect of the thermal stability of the inorganic ceramic particles on the separators.

The application provides a method for preparing a high-entropy alloy composite material. In the application, a high-entropy alloy grid is prepared by using a synchronous laser cladding technology, the high-entropy alloy grid is strengthened by using a heat treatment technology, the high-entropy alloy composite powder is formed by using a hot pressing technology, and finally the hot-pressed composite material is finally formed by using a laser melting technology. The existence of the high-entropy alloy grid can avoid the large-area enrichment of ceramic particles, the preform is prepared by using the hot pressing technology, the combination between the high-entropy alloy grid and the high-entropy alloy composite material in the subsequent melting process is increased, and the aggregation speed of the ceramic particles in the melting process is slowed down, so that the high-entropy alloy composite material is solidified and formed before the ceramic particles are aggregated. Therefore, the high-entropy alloy composite material prepared by the application does not have the aggregation of the reinforcing phase, and the composite material has good strength and toughness.

The application provides a TPMS porous titanium-based composite structure based on selective laser melting and a preparation method thereof, relates to the technical field of titanium-based composite materials, and the method takes TC4 titanium alloy powder as a matrix, introduces TiB2 ceramic particles as a reaction precursor, uses high-energy laser action to induce in-situ reaction of TiB2 and the titanium matrix in the selective laser melting process, and generates TiB reinforcing phases; on the basis, a porous structure with periodic continuous curved surface characteristics is constructed by combining a three-period minimal surface structure design method, and the synergistic regulation of material performance and structural performance is realized; it is verified that by regulating process parameters such as laser power, scanning speed and scanning interval, the stable forming of the TPMS porous structure can be realized, and the TiB reinforcing phases are uniformly distributed in the structural matrix; the prepared structure has good mechanical response characteristics while keeping high forming precision, and presents stable deformation behavior and continuous energy absorption process under the action of compression load.

A sensor element including an oxygen-ion conductive solid electrolyte body, a detection electrode provided on a surface of the electrolyte body and in contact with a measured gas, and a reference electrode provided on the other surface of the electrolyte body and in contact with a reference gas; a catalyst layer covering the detection electrode and including a porous carrier of ceramic particles, and catalyst particles supported on the carrier and formed of a noble metal (Pt, Pd, Rh, and / or Au). The carrier includes oxide particles bonded to portions of surfaces of the ceramic particles, the oxide particles having a composition different from the ceramic particles, being smaller than the ceramic particles, and being formed of zirconia, alumina, or lanthana. The catalyst particles are supported on either of surfaces of the oxide particles and the surfaces of the ceramic particles.

The application discloses an in-situ self-generating ceramic particle reinforced low-tungsten-content composite material, and a preparation method of the in-situ self-generating ceramic particle reinforced low-tungsten-content composite material.The low-tungsten-content composite material is composed of the following components in percentage by mass: W 59% to 69%, Ni 21% to 28%, Fe 9% to 12%, and ceramic reinforcing phase 1%.The tungsten content in the material system is greatly reduced, the toughness of the bonding phase is significantly increased, the plasticity and processing performance are improved, the W atoms in the bonding phase are difficult to diffuse to the surface of other W grains during the sintering process, the long-range migration is blocked, the W grain growth is effectively inhibited, the size of the in-situ generated ceramic particles is small, the distribution is uniform, the interface between the metal matrix and the ceramic particles is pure and firm, the strong dispersion strengthening and fine-grain strengthening effects can be produced, and the application of the low-tungsten-content composite material is suitable for the fields of aerospace, radiation shielding and precision instruments.

A printable paste for producing an electrical component, including a printable, non-conductive coating, electrically conductive particles and ceramic NTC particles, wherein the electrically conductive particles and the ceramic NTC particles are homogeneously distributed in the printable, non-conductive coating. There is also provided a method for producing a printable paste, a thin film including the printable paste, a method for producing the thin film, and a temperature sensor and an inrush current limiter including the thin film having the printable paste.

This invention relates to the field of ceramic composite metal casting technology, and discloses a method and apparatus for producing ceramic composite iron-based wear-resistant castings. The production method involves treating ceramic particles with decontamination, coarsening, sensitization, activation, and chemical plating to obtain modified ceramic particles; mixing and stirring the modified ceramic particles and a coating material to obtain a ceramic preform; fully heating the ceramic preform; then removing it and placing it into a mold cavity to obtain a mold; heating the mold in a tank; pouring molten iron after heating; and cooling after casting to obtain the ceramic composite iron-based wear-resistant casting. This invention also discloses a production apparatus for ceramic composite iron-based wear-resistant castings. This invention, employing the above-mentioned method and apparatus for producing ceramic composite iron-based wear-resistant castings, promotes the composite of ceramic and molten metal from a casting process perspective, ensuring that the molten metal can penetrate the fine pores of the ceramic preform, resulting in a good interface bonding between the high-chromium cast iron and ceramic particles, without unbonded or microscopic gaps.

The utility model relates to the technical field of ceramics, and provides a ceramic raw material stirring device which comprises a main frame, a driving motor is arranged on the side face of the main frame, a first transmission wheel is fixedly connected to the output end of the driving motor, and a first connecting column is fixedly connected to the side, close to the main frame, of the first transmission wheel. A first spiral column is fixedly connected to the side face of the first connecting column, a plurality of shearing gears are rotationally connected to the surface of the first spiral column, a second connecting column is fixedly connected to the side, close to the main frame, of the fourth transmission wheel, and a second spiral column is fixedly connected to the side face of the second connecting column. Through the design of a combined flow field of axial pushing and radial turbulence, the defect of'plunger flow 'of traditional spiral stirring is effectively overcome, axial flow and radial flow are overlapped to form a complex mixed flow field, ceramic particles and additives can be efficiently mixed, heavy particle sedimentation caused by centrifugal force is avoided, and mixing uniformity is remarkably improved.

This invention provides a separator and a base membrane, the base membrane comprising a central region and a peripheral region adjacent to the central region, the peripheral region comprising a first region located above the central region and a second region located below the central region; a first coating coated on the central region of the base membrane; and a second coating coated on the first and second regions of the base membrane; the first coating comprising first ceramic particles, a first binder, and a wetting agent; the second coating comprising a fast ion conductor material, second ceramic particles, and a second binder; wherein the ceramic particles in the first coating constitute 80%~95% by mass in the second coating, the fast ion conductor material in the second coating constitutes 10%~30% by mass, and the thickness T2 of the second coating is greater than the thickness T1 of the first coating. The separator of this invention can significantly improve interfacial contact performance, reduce interfacial impedance, and avoid puncture damage to the separator from the electrode edges; it also solves the problem of insufficient electrolyte wetting in the central region.

This application discloses a nanocellulose ceramic composite-coated separator, relating to the field of battery separator technology. It includes a porous polymer base membrane and a composite coating, wherein the composite coating covers at least one side of the porous polymer base membrane. The composite coating is obtained by coating and drying an aqueous ceramic slurry, and the aqueous ceramic slurry comprises 85-95 parts by weight of inorganic ceramic particles, 5-15 parts by weight of nanocellulose, 0.1-2 parts by weight of a crosslinking agent, and 200-500 parts by weight of deionized water. This application significantly improves flexibility, adhesion strength, and thermal stability.

The application provides a kind of wharf backfill area dynamic monitoring method based on stress measurement, and the raw material of solid waste-based anti-explosion soil includes 82-92 parts by weight of solid waste base material, 5-12 parts of cementing material, 0.1-0.4 parts of light component, 0.2-0.6 parts of hybrid fiber, 1.5-3.5 parts of multi-scale elastic energy dissipation particle, and 0.5-5 parts of intelligent sensing and self-repairing functional component;The mass ratio of hybrid fiber and multi-scale elastic energy dissipation particle is 1:(4-8);Intelligent sensing component includes distributed optical fiber sensor, piezoelectric ceramic particle and conductive nanomaterial;Conductive nanomaterial is coated on the surface of hybrid fiber and forms a three-dimensional piezoresistive sensing network;Self-repairing component is a microcapsule containing a repairing agent or a microbial carrier with mineralization ability, and the microcracks generated by local strain trigger the rupture of self-repairing component, releasing the repairing agent or microorganisms.

This invention provides a battery separator with ion adsorption capabilities and its preparation method, belonging to the field of new energy battery technology. It solves the problem of battery capacity decay and deterioration of cycle performance caused by ion leaching damaging the SEI film and consuming active lithium. The battery separator of this invention includes a base film and a ceramic coating on at least one surface of the base film. The raw materials for preparing the ceramic coating include porous organic framework materials, metal ion chelating agents, ceramic particulate materials, wetting agents, and binders. This invention significantly improves the dispersion ability of the slurry and shortens the dispersion time by using metal ion chelating agents instead of traditional dispersants. Simultaneously, the use of binders containing specific functional groups crosslinks with the porous organic framework materials and forms a synergistic effect with the chelating agents, thereby jointly enhancing the battery separator's ability to adsorb metal ions. This effectively solves the problem of poor stability in high-energy-density battery systems, thus significantly improving the battery's energy density and cycle life.

This invention discloses a method for preparing an extreme environment protective coating for pipe fittings based on explosive processing. It relates to the field of metal-based composite material preparation and high-energy-rate surface modification technology, comprising: using a high-intensity shock wave generated by an explosive explosion as a driving force to drive a ceramic medium to move at high speed and impact the inner wall surface of a steel pipe, causing the ceramic medium to embed into the inner wall surface layer of the steel pipe, forming a ceramic particle-reinforced metal-based composite gradient structure. This invention's method for preparing an extreme environment protective coating for pipe fittings based on explosive processing, through multi-module collaboration, achieves digital design of the gradient pressure field, precise loading with dual-mode selectability, and online quantitative evaluation of the treatment effect, providing a complete solution for the controllable preparation of high-performance gradient structure steel pipes.

The application provides a high-slip hot-melt road marking paint composition containing ceramic particles and relates to the technical field of materials, which is prepared from the following raw materials in mass parts: petroleum resin 18-22 parts, plasticizer 4-7 parts, polyethylene wax 1-2 parts, ethylene-vinyl acetate copolymer 2-5 parts, filler 25-35 parts, hollow glass microbead 8-12 parts, ceramic particle 15-22 parts, thixotropic agent 3.1-5.5 parts, silane coupling agent 0.3-0.5 parts, antioxidant 0.1-0.3 parts and pigment 5-8 parts. Through the synergistic effect of ternary thixotropic compound of hydrogenated castor oil-polyamide wax micro powder-fumed silica, hollow glass microbead density reduction and ceramic particle surface modification, the comprehensive performance of the hot-melt marking paint is significantly improved. The high-density large-particle-size ceramic particles are effectively inhibited from settling in the hot-melt state, and the balance between slip resistance, durability and workability is achieved.

This invention belongs to the field of metal matrix composite material preparation technology, specifically relating to a zinc-based composite material, its preparation method, and its application, addressing the problems of insufficient mechanical properties and difficulty in uniformly dispersing nanoparticles in pure zinc materials. The zinc-based composite material comprises a zinc matrix and fine nano-ceramic particles. The nano-ceramic particles have a particle size of 50-99 nm and a volume fraction of 0.5-2 vol%, uniformly dispersed within the zinc matrix. The preparation method involves an in-situ exchange reaction to transfer coarse nano-ceramic particles from an aluminum carrier to the zinc matrix, dispersing and refining them to obtain a zinc-based composite material with fine nano-ceramic particles. This invention solves the technical problem in existing technologies where high-melting-point ceramic materials are prone to floating, agglomeration, or interfacial separation, resulting in difficulty in precisely controlling the particle size below 100 nm. It achieves a uniform distribution of the ceramic reinforcing phase below 100 nm, thereby improving the creep and mechanical properties of the zinc-based composite material.

The present application relates to the technical field of welding wire forming, in particular to a ceramic particle welding wire forming machine for roll surface of a rolling machine, comprising a wire drawing mechanism; further comprising a forming mechanism and a cleaning mechanism, the wire drawing mechanism is installed on the forming mechanism, and the cleaning mechanism is installed on the wire drawing mechanism; the blank is drawn into a flat outer layer welding wire through the wire drawing mechanism, the surface of the outer layer welding wire is cleaned and dried through the cleaning mechanism, the center welding wire is transported through the forming mechanism, the outer layer welding wire is spirally wound on the center welding wire through the cooperation of the wire drawing mechanism and the forming mechanism, the outer layer welding wire wraps the center welding wire, then the whole welding wire is formed, the formed welding wire can be directly used when welding a gap with moderate width, the outer layer welding wire is stripped when welding a fine gap, the center welding wire is used for welding, the outer layer welding wire is used for welding when welding a deep gap, so that the practicability of the equipment is improved.

This invention discloses a biomimetic wear-resistant and anti-aging protective coating for cactus skin, belonging to the field of material surface protection technology. This coating features a dual-layer composite protective structure mimicking the waxy and cuticle layers of cactus skin. It consists of a bottom adhesion-enhancing layer and a top biomimetic wear-resistant and weather-resistant layer. The bottom layer uses modified epoxy resin to improve substrate adhesion, while the top layer replicates the hydrophobic, wear-resistant, and UV-resistant properties of cactus skin wax, with the addition of nano-titanium dioxide and wear-resistant ceramic particles. This achieves multiple properties of the coating, including wear resistance, UV resistance, aging resistance, and hydrophobic self-cleaning properties. It is suitable for surface protection of outdoor metal, plastic, and concrete substrates, solving the problems of easy wear, aging, and short service life of outdoor coatings.

This utility model relates to a spray granulation tower for processing alumina ceramic materials, including a heating system and a granulation component disposed at the air outlet of the heating system. The granulation component further includes a granulation tower body, and includes a filter component disposed at the top inside the granulation tower body to prevent ceramic particles from being discharged with the air. The filter component includes several vertically arranged filter bags for filtering ceramic particles, and also includes a drive mechanism for shaking the filter bags. This utility model improves the utilization rate of raw materials by providing a filter component at the top of the granulation tower body to prevent the formed particles from escaping with the air from the granulation tower body.

This invention relates to the field of high-temperature protective materials technology, specifically to a CMC heat-resistant sleeve and its preparation method. The preparation method includes the following steps: S1; impregnating a ceramic-based composite fiber cloth in a sol of nano-ceramic particles to obtain a composite fiber cloth; S2: impregnating the composite fiber cloth with a silicone slurry, and after initial curing, coating the surface of the composite fiber cloth with the silicone slurry, followed by secondary curing, and then hot-pressing two composite fiber cloths together to obtain a CMC composite fiber cloth. The CMC heat-resistant sleeve is then prepared using this CMC composite fiber cloth. This preparation method uses a sol-gel method combined with a high-temperature in-situ sintering process to prepare the composite fiber cloth, then impregnates and coats it with a silicone slurry, and finally hot-presses and stacks them together to obtain the CMC heat-resistant sleeve. Its high-temperature resistance range reaches 1100~1400℃, it can withstand molten metal splashes for short periods, has excellent wear resistance, a long service life, maintains overall flexibility, is easy to install and disassemble, and is adaptable to different pipe diameters and bending parts.

The application provides a cable with good wear resistance and a connecting assembly thereof, and relates to the technical field of cables. The cable with good wear resistance comprises a cable main body and an outer sheath, the cable main body is arranged on the inner side of the outer sheath, and the outer side of the outer sheath is covered with a wear-resistant layer. The cable main body comprises an inner liner, the inner side of the inner liner is provided with three copper cores, the outer side of the copper core is fixedly provided with an inner sheath, the gap between the inner side of the inner liner and the inner sheath is filled with a filling layer, and the outer side of the inner liner is fixedly provided with a honeycomb sleeve, a plurality of honeycomb holes are uniformly arranged on the outer circumferential wall of the honeycomb sleeve. The wear-resistant layer on the outer side of the cable outer sheath is made of a nano ceramic particle reinforced fluororubber material, the material has excellent scratch resistance and wear resistance, can effectively resist the friction between the cable and the ground, the pipeline and the wall during laying and the external mechanical scratching during long-term use, and reduces the risk of damage of the outer sheath and exposure of the internal cable main body.

The application relates to a cold isostatic pressing forming method of a ceramic radome blank body, which comprises the following steps: preparing a ceramic formula powder, wherein the ceramic formula powder comprises ceramic powder and rare earth oxide powder in a mass ratio of 100:(6-30); the ceramic powder comprises one or more of silicon nitride powder, silicon oxide powder and aluminum oxide powder; preparing a ceramic slurry from the ceramic formula powder; the ceramic slurry comprises a first adhesive and a second adhesive; granulating the ceramic slurry to obtain ceramic particles; performing surface modification on the ceramic particles; and performing cold isostatic pressing on the modified ceramic particles through a radome profile forming die to obtain a ceramic radome blank body, so that the internal stress and the elastic aftereffect of different parts of the particle compression formed blank body after the large-size special-shaped structure blank body are released, the forming blank body does not crack, deform and is damaged, and the quality is controllable.

This invention discloses a heavy-duty gearbox shell based on gradient-optimized composite materials and its manufacturing process, relating to the fields of material design and equipment manufacturing technology. The shell body is an integrally formed gradient heterogeneous composite structure with the following gradient design: a core load-bearing layer located in the gear meshing area, bearing housing, and flange connection surface of the shell body, made of a composite powder of high-carbon chromium-molybdenum steel powder and nano-ceramic particles; a transition buffer layer connecting the core load-bearing layer and the lightweight support layer, made of a composite powder of medium-carbon alloy steel powder and short carbon fibers; and a lightweight support layer located on the sidewalls and non-stressed areas of the shell body, made of a composite powder of aluminum alloy powder and hollow ceramic microspheres. The thickness ratio of the core load-bearing layer, transition buffer layer, and lightweight support layer in the radial section is 1:1.4:1.6. This invention, based on a three-dimensional gradient heterogeneous composite structure, achieves precise matching of material properties and load distribution, optimizing and improving load-bearing capacity while maximizing lightweight design.

A firing support for a ceramic powder of alkali and / or alkali-earth oxide comprising a porous ceramic body for containing said powder, said body comprising a ceramic material consisting of ceramic grains linked by a matrix; said matrix representing by mass between 5% and 50% of said material and comprising a crystalline nitride phase of chemical formula MsAltOuNv, where M is a chemical element selected from Si, Mg, Li, Zr, and s, t, u and v are stoichiometric indices between 0 and 1 and normalized with respect to the highest, and where s+t > 0, and u ≥0, and v> 0; said grains of equivalent diameter greater than 150 micrometers and less than 300 micrometers representing by volume at least 10% of said material; said body having an open porosity of between 5 and 40%, and a median equivalent pore diameter of between 0.1 and 15 micrometers. No figure

The application discloses an Al2O3 fiber reinforced oxide composite material based on core-shell structure regulation of electromagnetic shielding performance and a preparation method, and belongs to the field of ceramic matrix composites and electromagnetic shielding materials.The continuous Al2O3 fiber is used as a reinforcing body, and the Al2O3-3YSZ@SiOC core-shell structure ceramic particle is used as a functional matrix, wherein the core layer is an Al2O3 and 3YSZ composite oxide, and the shell layer is a SiOC carbon-containing ceramic phase; the core-shell structure ceramic particle is prepared through hydrolysis and polycondensation of an organic silicon precursor and high-temperature pyrolysis, and the electromagnetic performance is adjusted by regulating the carbon content; then, the slurry impregnation, laminated forming and hot-pressing sintering processes are adopted to prepare the composite material.The application realizes the synergistic effect of the electric conduction loss and the polarization loss through the construction of a multiphase interface, realizes the adjustable conversion of the electromagnetic absorption and shielding performance while the high-temperature stability and the mechanical performance of the material are maintained, and the material is suitable for the fields of aerospace high-temperature structures and electromagnetic shielding integration.

This invention discloses a high-temperature melting and spheroidizing device for ceramic particles, specifically relating to the field of ceramic particle production technology. It includes a working frame, with a spheroidizing chamber fixedly installed on the top surface of the frame and an operating shell fixedly installed on the bottom surface of the spheroidizing chamber. A high-temperature generating component for high-temperature melting and spheroidizing ceramic particles is provided on the top surface of the spheroidizing chamber. A vibration component for auxiliary dispersion of the spheroidized ceramic particles is provided on one side of the operating shell. Through the synergistic action of the feeding hole, feeding shell, feeding hopper, first reduction motor, conveying column, spiral blades, and heating wire, forced dispersion and preheating of the ceramic particles are achieved. The rotating spiral blades propel and agitate the particles, breaking up agglomerated particles. The heating wires preheat and remove moisture, preventing particles from cracking due to thermal shock in the high-temperature zone and avoiding adhesion of multiple particles in the molten state, thus improving particle dispersibility and subsequent spheroidizing uniformity.

The utility model discloses a color antiskid pavement structure for tourist highway, including cement stable broken stone bottom base and cement or asphalt concrete base layer, characterized by: the upper of cement or asphalt concrete base layer is sequentially provided with adhesive layer, ceramic particle layer and surface protective agent layer, and adhesive layer is formed by the adhesive that is laid on cement or asphalt concrete base layer, and ceramic particle layer is constituted by the colored ceramic particle that is laid on adhesive layer, and the adhesive of adhesive layer upper part is immersed to ceramic particle layer, and surface protective agent layer is constituted by transparent cover surface agent that is coated on ceramic particle layer. The utility model discloses a color antiskid pavement structure for tourist highway, and the adhesive that is immersed in ceramic particle layer realizes firm fixing to colored ceramic particle, so that it does not separate under the long -term rolling effect of vehicle, and it is favorable to form durable, big friction, ceramic particle not easy to separate, not easy to fade pavement structure.

The utility model relates to crushing device technical field, specifically disclose a raw material crushing device, including bearing mechanism, the top of bearing mechanism is provided with crushing mechanism, the both sides of bearing mechanism still distribute and set up dust extraction mechanism, the bearing mechanism contains base, stand, mounting sleeve and store material cylinder, the crushing mechanism contains top board, hydraulic cylinder and rubbing head, the dust extraction mechanism contains air pump and dust cover, the scheme cooperates with the ceramic particle of the conical rubbing head and the inner wall of store material cylinder through crushing mechanism, and the rubbing bump no.

This invention provides a method for cleaning ceramic parts, comprising: a first cleaning process, in which a chemical solution is used to dissolve powdery particles generated during the molding process of the ceramic part; a second cleaning process, S21, rinsing the ceramic part with a specified acidic solution; S22, immersing the ceramic part after rinsing with the specified acidic solution in the specified acidic solution; S23, rinsing the immersed ceramic part with pure water; S24, wiping the ceramic part after rinsing with pure water with a polishing tool made of nanomaterials; S25, immersing the wiped ceramic part in deionized water and performing ultrasonic cleaning; S26, rinsing the ultrasonically cleaned ceramic part with pure water; and a third cleaning process, in which ultrasonic cleaning is used to clean the ceramic part to remove residual particles and solution. This invention can effectively remove suspended particles and damaged layers from ceramic parts, thereby solving the problem of excessive ceramic particle count and improving chip yield.

The present invention relates to a powder comprising solid ceramic particles, characterized that said particles have an inner porosity of at least 30%, preferably of at least 45% and preferably at most 65%, wherein said powder has a particle size with a d10 of at least 100 μm.