365 results about "Ceramic" patented technology

The invention belongs to the field of life, and particularly relates to a thermos bottle with visible water storage capacity. The thermos bottle comprises a shell and an inner container arranged inside the shell. A base capable of vertically moving is mounted at the bottom of the shell, an elastic airbag is fixedly connected between the upper end of the base and the lower end of the inner container, a vertical strip opening is hermetically connected onto the side wall of the shell, a transparent tube is fixedly connected into the strip opening, the lower end of the transparent tube is communicated with the elastic airbag, and a piston block is hermetically connected into the transparent tube. The quantity of water in the thermos bottle can be known by observing the position of a piston block, a piezoelectric ceramic is used for power generation when water is injected, an LED (light-emitting diode) lamp in the piston block can emit light, the quantity of the water in the thermos bottlecan be known conveniently by people, and scalding is avoided. In addition, by the aid of an annular air cushion, when the thermos bottle falls, a good buffering function can be achieved, and impact onthe inner container is reduced.

This invention discloses a grinding device for metal powder processing, relating to the field of metal additive manufacturing powder technology. It includes a collection box with a controller fixedly installed on one side of its outer wall. A grinding cylinder is fixedly connected through the top of the collection box. The inner wall of the grinding cylinder is made of silicon carbide ceramic, and a grinding mechanism is installed inside the grinding cylinder. A spiral feeding mechanism, a gear transmission mechanism, and a cooling mechanism are sequentially arranged outside the grinding cylinder. This invention uses multiple surface-mount temperature sensors to monitor the temperature of different areas of the grinding cylinder in real time. When the temperature rises, a circulating pump starts, and cooling water circulates within a hollow cooling ring, carrying away the grinding heat. Furthermore, a water temperature control component actively cools and stirs the cooling water to ensure a continuously low temperature. This closed-loop temperature control system effectively controls the temperature of the grinding zone, effectively preventing oxidation, phase transformation, or cold welding of the metal powder, thus ensuring the production and forming effect of the metal additive powder.

This invention discloses a high-voltage-gradient tin oxide varistor ceramic with adjustable nonlinear coefficients, its preparation method, and its applications, belonging to the field of functional ceramics and their preparation technology. This invention solves the problems of low voltage gradient, difficult-to-control nonlinear coefficients, and limited application in surge protection devices of existing SnO2-based ceramic materials. This invention employs multiple metal oxide composite doping and solid-state sintering to control the varistor performance of SnO2 ceramics through both doping and sintering processes.

This invention relates to the field of ceramic processing equipment technology, specifically disclosing a clamping fixture for processing ceramics, including a control component, a clamping component, and a support component. The clamping component is located on one side of the control component, and the support component is located below the clamping component. The three components work together to achieve stable clamping, flexible adjustment, and safe support of ceramics, adapting to the processing and clamping needs of round ceramics of different sizes. The control component includes a handle, an extension bracket, a secondary handle, a first control button, and a second control button. The extension bracket is fixedly installed on the outer wall of the handle, and the secondary handle is installed on the extension bracket near the bottom of the handle, forming a two-hand gripping operating structure. This invention solves the problems of existing ceramic clamping fixtures, such as cumbersome operation, poor coordination between clamping and support, insufficient operational safety, limited adaptability, and susceptibility to damage due to vibration during ceramic processing.

The utility model relates to related field of ceramic handicraft, especially a kind of multifunctional ceramic handicraft, including base, first ceramic handicraft, second ceramic handicraft, bluetooth speaker, humidifier, delivery pipe, discharge, motor, drive gear and gear ring etc..The utility model is convenient for ceramic handicraft to play music by being provided with bluetooth speaker, while humidifying component can adjust ambient humidity, and the humidifying component sprays water mist to create humid, peaceful atmosphere when bluetooth sound plays music, realize audio-visual combination, create a kind of comfortable, relaxed environment, it is more suitable to be placed in study, leisure room and the like place, to realize the multifunctionality of ceramic handicraft, can better satisfy people's more actual needs, and multifunctional ceramic handicraft is in the market competition in relatively advantageous position, improve the practicality of ceramic handicraft.

The present invention provides a heat exchanger capable of stably and continuously recovering heat over a long period of time, even when the target gas for heat recovery is an extremely corrosive gas, and an exhaust gas treatment device using such a heat exchanger. [Solution] The heat exchanger of the present invention is characterized by comprising a partition plate (14) made of refractory castable material that divides the inside of the casing (12) so that the low-temperature side fluid (LF) and the high-temperature side fluid (HF) flow in countercurrents, and a plurality of solid heat transfer rods (16) made of at least one ceramic selected from the group consisting of alumina, zirconia, silicon carbide, silicon nitride, molybdenum silicide, and lanthanum chromite, which are arranged to airtightly penetrate the front and back surfaces of the partition plate (14) and cross the flow paths of the low-temperature side fluid (LF) and the high-temperature side fluid (HF).

The present application relates to the technical field of ceramics, and particularly relates to a sanitary ceramic glaze, a preparation method and application thereof. The sanitary ceramic glaze is made of the following chemical components with mass percentage: SiO2 58.6-63.6%, Al2O3 6-11%, CaO 10-15%, MgO 1-5%, Fe2O3 0.05-2%, TiO2 0.02-1.2%, K2O 11-16%, Na2O 0.9-5%, and the sum of the mass percentages of the chemical components is 100%. The sanitary ceramic glaze provided by the present application has high hardness, excellent easy-to-clean and antibacterial properties, an antibacterial rate of more than 99% and significantly improved durability, meets the market demand of high-end sanitary wares, and overcomes the defects of the existing sanitary ceramic glaze technology, such as insufficient surface smoothness, non-durable antibacterial performance, and mutual restriction of easy-to-clean and antibacterial properties.

The application discloses an intelligent closestool with a smart cover plate and a ceramic bottom which is easy to clean, comprising a ceramic body and a smart cover plate. The smart cover plate is installed on the ceramic body. A hinge is arranged at the rear end of the closestool, one leaf of the hinge is fixed to the rear end of the ceramic body, and the other leaf is fixed to the rear end of the base of the smart cover plate. Thus, the smart cover plate can rotate relative to the ceramic body with the shaft of the hinge as the rotating shaft. A lifting mechanism capable of lifting the smart cover plate is arranged between the base of the ceramic body and the base of the smart cover plate. The closestool with the smart cover plate and the ceramic bottom is easy to clean.

This invention provides a broadband high-temperature resistant ceramic-based microwave absorbing material and its preparation method, belonging to the technical field of microwave absorbing materials. The microwave absorbing material uses silicon carbide powder with a particle size of 100-500 nm as the matrix material. Silicon carbide is mixed with acetylene black and polycarbosilane solution and ball-milled to prepare ceramic slurries containing different concentrations of acetylene black. The ceramic slurries are then poured into a steel mold and vibrated on a vibration table. The sample surface is then smoothed and dried in a vacuum freeze dryer. The dried green sample is then subjected to high-temperature pyrolysis under vacuum and bonded to obtain a silicon carbide ceramic-based composite material. This invention utilizes a concentration gradient multilayer structure to effectively improve the impedance matching of the material. Simultaneously, by utilizing the multiple reflection and scattering effects of electromagnetic waves between silicon carbide and acetylene black, as well as the interfacial polarization loss between silicon carbide and black, broadband high absorption of electromagnetic waves can be achieved under high-temperature conditions.

The application provides a bulletproof ceramic and a preparation method thereof. A composite coating group is fixed on a bullet-impact surface of a ceramic base body. The composite coating group comprises at least three layers of columnar crystal layers prepared by an electron beam physical vapor deposition (EB-PVD) method, which are sequentially stacked from bottom to top. A lubricating layer prepared by a physical vapor deposition (PVD) method is arranged between two adjacent columnar crystal layers. In the design of the application, at least three layers of columnar crystal layers and two layers of lubricating layers are included, that is, at least two groups of "columnar crystal layer-lubricating layer-columnar crystal layer" sandwiched slip structures are provided, the bullet can be deflected multiple times when penetrating, and the overall penetration resistance of the bulletproof ceramic is ensured.

The application discloses a low-temperature normal-pressure sintering preparation method of silicon nitride ceramic for high-power electrothermal elements, and comprises the following steps: (1) mixing silicon nitride powder and nitride glass sintering additives, wherein the amount of the silicon nitride powder is 60%-93% based on the total weight of the mixed raw materials, and the amount of the nitride glass sintering additives is 7%-40%; (2) drying the mixture obtained in the step (1) to obtain dry materials; (3) forming the dry materials obtained in the step (2) to obtain formed materials; and (4) sintering the formed materials obtained in the step (3) under normal pressure. According to the method, the sintering temperature is reduced to a low-temperature interval of 1550-1680 DEG C by using the nitride glass sintering additives, the dependence on expensive and complex hot-pressing or gas-pressure sintering equipment is eliminated, the normal-pressure sintering of high-performance silicon nitride ceramic is realized while the energy consumption and cost are significantly reduced, and a process foundation is laid for large-scale and low-cost manufacturing.

The application discloses a preparation method of high-strength wide-burning-range prestressed magnesia daily-use porcelain and a product prepared by the method. A coating is introduced on the surface of a magnesia daily-use porcelain body through a coating technology, and the difference between the thermal expansion coefficients of different crystal phases is utilized, so that the thermal expansion coefficient of the surface of the body is reduced to generate a pre-compression stress, the effect of enhancing the bending strength of the body is realized, the thermal stability of the ceramic is improved, the demand problem of the magnesia daily-use porcelain for strength and thermal stability is solved, and the application has very important significance for the innovation and development of daily-use ceramic.

The invention discloses a surface nano oxide dispersion strengthening method for high-strength and high-toughness aluminum alloy powder and a powder material thereof, and relates to the technical field of powder metallurgy materials. Aluminum-zinc-magnesium-copper-zirconium pre-alloyed atomized powder is used as a matrix, and is dispersed by virtue of polyvinylpyrrolidone and anhydrous alcohol; the preparation method comprises the following steps: sequentially introducing magnesium aluminate spinel nanoparticles, optional magnesium oxide nanoparticles and passivated magnesium nanoparticles for dry coating, embedding a nano dot matrix into a surface layer through ceramic ball micro shot blasting, removing organic matters in a vacuum subsection manner, thermally activating at 405-435 DEG C, cooling, and adding zinc micro powder for low-energy coating. The method is suitable for canning degassing, hot isostatic pressing and hot extrusion workpieces. And large-scale production can be realized. The oxide in the obtained powder is converted into intragranular non-communicated dispersion particles from a prior powder boundary communicated interlayer, the boundary connectivity is reduced, the densification combination is improved, the fracture toughness, impact and high-cycle fatigue are remarkably improved, meanwhile, the powder fluidity is kept, and the consistency is improved.

This application discloses a method and its application for in-situ construction of hierarchical porous photocatalytic foam ceramics based on the pyrolysis of carbonates and / or oxalates. This method introduces a full spectrum of carbonate and / or oxalate precursors, including alkaline earth metals, transition metals, rare earth elements, and bismuth-based precursors, into an organic foam impregnation system. Combined with a gradient heat treatment process, during sintering, the following are simultaneously achieved: in-situ pyrolysis of the precursors to generate a highly dispersed metal oxide photocatalytic active phase; synergistic construction of micro- and macro-hierarchical channels through gas release and template decomposition; and in-situ construction of photocatalytic heterostructures based on a combination of metal cations. The resulting material possesses a three-dimensional interconnected pore structure, excellent mechanical stability, and broad-spectrum photocatalytic activity, enabling efficient degradation of recalcitrant emerging pollutants in water, such as antibiotics, perfluorinated compounds, and bisphenol A. This provides a structure-function integrated material solution for the engineering application of photocatalysis technology in environmental remediation.

The application relates to a grading wheel, which comprises a fixed ring, a grading ceramic and a sleeve pipe. The fixed ring is a circular ring. The grading ceramic is arranged on the outer edge of the fixed ring and is uniformly arranged along the circumference of the fixed ring. Each grading ceramic is provided with a through hole. The sleeve pipe is arranged in the through hole of the grading ceramic and is locked in the through hole by a fastener. When the grading wheel rotates, the rotation force generated by the rotation drives the fixed ring and the grading ceramic to rotate to grade the material, and the torque generated by the rotation force is borne by the sleeve pipe. The grading wheel provided by the application solves the problem that the existing grading wheel structure bears the torque and force by the ceramic, and effectively prolongs the service life of the grading wheel.

This invention, entitled "An Built-in Power Device, a Dexterous Finger, and Its Applications," belongs to the field of robotic dexterous hand technology. The technical problems it aims to solve are: existing robotic dexterous fingers suffer from problems such as external power devices, complex structures, large size, low power density and slow response due to the need for reducers in motor drives, poor stiffness and easy wear of tendon-wire transmissions, large return gaps, unstable positioning and grasping, and difficulty in directly and effectively driving joint rotation through the micro-displacement of piezoelectric ceramics. The key technical solution is: a built-in power device consisting of a piezoelectric ceramic power system and a hydraulic transmission system. The piezoelectric ceramic utilizes its inverse effect to achieve direct electro-mechanical conversion, providing mechanical power to the hydraulic transmission system. The hydraulic pump in the hydraulic transmission system is a reciprocating positive displacement pump, which provides pressurized oil to the hydraulic circuit through the periodic change of the working chamber volume.

The utility model discloses a ceramic homogenizer structure of chromatographic equipment, including inner ceramic homogenizer, the outer surface of inner ceramic homogenizer is provided with shell subassembly, the shell subassembly includes upper ceramic cover, upper limit post, upper limit boss, lower ceramic cover, lower limit post, lower limit boss, retainer and compression ring, the upper ceramic cover and lower ceramic cover all sleeve joint in the outer portion of inner ceramic homogenizer, and the upper ceramic cover is connected with lower ceramic cover screw thread, the inner top wall of upper ceramic cover is integratively provided with upper limit post, the inner side wall of upper ceramic cover is integratively provided with upper limit boss, the utility model discloses the outer portion of inner ceramic homogenizer installs detachable shell subassembly, can increase the size of ceramic homogenizer, realizes size adjustment to adapt to the extraction tube of different size, in addition, with the structure such as limit post, limit boss and retainer, can effectively limit the position of inner ceramic homogenizer, and the stability of structure has been improved significantly.

The utility model provides a piezoelectric ceramic packaging component relates to piezoelectric ceramic packaging technical field, including workstation, still include base, the base sets up in the middle part of workstation, the base includes fixed ring, the bottom fixed ring has the mounting panel, the mounting panel is fixed in the bottom of workstation, is equipped with the mounting hole on the mounting panel, and the mounting panel is fixed in the bottom of workstation through bolt, still include linkage component. This piezoelectric ceramic packaging component is when packing to the ceramic, first will be placed in the top of the locating disc ceramic, then starts the motor, and the motor will drive the locating disc rotation, and the locating disc will push the slider to move on the guide rod through the arc hole, and then make multiple rod body, pressure sensor and contact block move towards, when the pressure that pressure sensor detected reaches the set value, realize the clamping of ceramic, the device can be quickly positioned to the ceramic of different size, so as to carry out welding packaging subsequently.

In its most general sense, the present invention relates to a product, particularly a brake disc for a disc brake, the brake disc including a light-emitting insert, and a method for manufacturing the product. Specifically, the present invention relates to a light-emitting ceramic insert fixed to a side portion of a vehicle, preferably fixed to a portion of a braking system, the light-emitting ceramic insert comprising a body formed of a light-emitting ceramic material comprising powder including SrAl4O7 or SrAl2O4 doped with rare earth elements. The present invention also relates to a method for manufacturing the insert.

The application discloses a kind of heterojunction type indium oxide-based integral photocatalytic foam ceramics and its preparation method and PFAS degradation application. Indium oxide powder, hetero-structure component, various additives and reinforcing fibers are made into composite slurry, through organic foam impregnation forming, and then dried, degummed and sintered to prepare finished product. In the sintering stage, interface chemical bonding is realized by in-situ solid-phase reaction, S-shaped and Z-shaped charge transfer heterojunction is constructed, and the separation efficiency of photo-generated carriers is greatly improved. The material has high porosity and excellent mechanical strength, and relies on the advantages of double potential to build a redox synergistic defluorination system, generating multiple active species, which can effectively break the high-energy C-F bond and achieve efficient degradation and deep defluorination mineralization of PFAS pollutants such as PFOA and PFOS.

This invention belongs to the field of silicon nitride ceramic technology, specifically relating to a TEOS-coated silicon nitride ceramic powder, its preparation method, and its application. The TEOS-coated silicon nitride ceramic powder comprises a core layer and a coating layer; the core layer comprises silicon nitride; the coating layer is mainly prepared from tetraethoxysilane; based on the mass of SiO2, the mass of the coating layer is 0.5–15 wt% of the mass of the core layer. The TEOS-coated silicon nitride ceramic powder prepared by this invention can achieve a better refractive index match with photosensitive resin and a more uniform interface in photocurable ceramic forming processes, reducing light scattering and absorption unevenness problems, and significantly increasing the curing depth under the same exposure conditions. When used as a sintering aid, the TEOS-coated silicon nitride ceramic powder prepared by this invention can lower the densification temperature of silicon nitride ceramics while improving relative density and mechanical properties.

The utility model relates to the technical field of flow meters, in particular to a wear-resistant polyurethane ceramic flow meter which comprises a flow meter shell and an elastic lining body clamped and embedded in the flow meter shell, and a plurality of wear-resistant ceramic blocks are arranged in the elastic lining body. Any ceramic block is provided with a dovetail anti-falling block used for preventing the ceramic block from being abraded and falling off, by means of the arrangement of the elastic lining body clamped and embedded in the flow meter shell, a high-speed mixed medium is prevented from directly impacting the flow meter shell, meanwhile, by means of the arrangement of the ceramic blocks in the elastic lining body, the abrasion resistance of the flow meter is improved, and the service life of the flow meter is prolonged. The design of the dovetail anti-falling block on the ceramic block is utilized, the dovetail anti-falling block and the elastic lining body form a mutual embedding structure, and when the flowmeter is impacted and abraded by a high-speed mixed medium, the dovetail anti-falling block can effectively prevent the ceramic block from falling off from the elastic lining body due to impact and abrasion; it is ensured that the flow meter continuously and accurately meters fluid of a high-speed mixed medium, and the service life of the flow meter is prolonged.

Lightweight ceramics and their manufacture and additives used in the manufacturing process to induce porosity, reduce density and to lightweight the ceramic.

This utility model discloses a glazing device for daily-use ceramic production, belonging to the field of ceramic glazing. It includes a processing box and a glazing assembly. The glazing assembly includes a support plate fixedly connected to the inner wall of the processing box. A cylinder is installed at the top of the support plate, and a placement tray is fixedly sleeved at the top of the cylinder. A filling airbag is installed at the top of the placement tray, and an elastic hose is fixedly connected to the input end of the filling airbag. An air pump is installed on the outer wall of the processing box. Through the coordinated use of these devices, the stability of the ceramic container during glazing is improved, and the uniformity of glazing is enhanced. The combination of the support plate, cylinder, placement tray, and filling airbag allows for clamping from inside the container using filling airbags of varying sizes, ensuring the stability of the container during glazing and preventing unreachable areas during glazing, further improving the glazing effect of the ceramic container.

The present disclosure relates to a composition for underfill and a method for manufacturing the same, in which spherically and temporarily fixed high-thermal-conductivity shape-memory polymer composite particles are applied to the underfill, maintaining low viscosity during the filling process, and, at curing temperature, the particles are restored to a high aspect ratio shape to form a thermally conductive network between ceramics, thereby simultaneously achieving low filling viscosity and high heat dissipation performance.

The application discloses a preparation method of imitation volcanic stone foamed ceramic, which comprises the following steps: (1) preparing foamed ceramic powder: after a known foamed ceramic base material taking silicon carbide as a foaming agent is prepared into a base powder through ball milling and spray granulation, a pore-forming material is added and uniformly mixed, the mass ratio of the base powder to the pore-forming material is 70-85:15-30, and the particle size range of the pore-forming material is 6-30 meshes; (2) spreading the foamed ceramic powder according to a preset thickness in a refractory kiln, and scraping; (3) sending into a kiln for firing, the firing temperature is 1160-1170 DEG C, and the firing period is 8-13.5 h; (4) removing the refractory kiln after cooling out of the kiln, and thus imitation volcanic stone foamed ceramic is obtained. In step (1), the content of silicon carbide in the pore-forming material is greater than the content of silicon carbide in the foamed ceramic base material. The foamed ceramic after firing can form an imitation volcanic stone decorative effect with pores of different sizes.

The application relates to the technical field of ceramic production, in particular to a grouting equipment for daily-use ceramic production. The application provides the grouting equipment for daily-use ceramic production which can produce qualified ceramics. The grouting equipment for daily-use ceramic production comprises a mounting plate frame, a ceramic mold, a liquid storage tank, a liquid outlet, a liquid guide pipe and a shaking mechanism, the ceramic mold is placed in the mounting plate frame, the left side of the mounting plate frame is connected with the liquid storage tank, the upper side of the mounting plate frame is provided with the liquid outlet, the ceramic mold is located directly below the liquid outlet, the liquid guide pipe is in communication between the liquid outlet and the liquid storage tank, and the mounting plate frame is provided with the shaking mechanism for shaking the ceramic mold. The air in the piston cylinder is flowed into the ceramic mold through the air guide pipe by starting the motor and moving the limiting frame left and right to drive the ceramic mold and the raw materials to shake, so that the effect of shaking and pressurizing is realized, the raw materials are uniformly distributed in the ceramic mold, and the qualified production rate is improved.

This invention relates to the field of high-performance ceramic material preparation technology, specifically an ultra-high pressure discharge plasma sintering system, comprising a six-sided press body, a high-power DC pulse power supply, and a high-pressure synthesis assembly block. The six-sided press body has a frame providing ultra-high pressure and a hydraulic drive system. Its six carbide hammers together form a cubic space for placing the high-pressure synthesis assembly block containing the sample. The two poles of the high-power DC pulse power supply are respectively connected to two upper and lower large pads through two conductive copper strips. The ends of the two large pads are fitted with steel rings, and the ends of the steel rings are embedded with carbide hammers. This ultra-high pressure discharge plasma sintering system achieves rapid and uniform bulk heating of the sample. The synergistic effect of the two systems enables the densification sintering preparation of ultra-hard ceramics at temperatures far lower than those of traditional high-temperature and high-pressure methods in a short time.

This invention provides a wide focal length ultrasonic probe, comprising a housing with an internal cavity, at least one end of which is open; a first wedge and a second wedge, mirror-symmetrically arranged within the cavity, each wedge having a top surface with two or more inclined angles; a piezoelectric ceramic corresponding to each inclined surface, with the piezoelectric ceramics on the same wedge operating in parallel; and a sound-insulating block disposed between the first and second wedges. By processing the top surface of a single-sided wedge into an inclined surface with two or more inclined angles, and by arranging a piezoelectric ceramic on each inclined surface and connecting the piezoelectric ceramics on the same wedge in parallel, this invention expands the focal length span of the probe compared to ultrasonic probes with only one pair of piezoelectric ceramics, thereby expanding the optimal area for beam focusing and achieving full coverage of medium-thick plates, improving defect detection rate and accuracy.

The invention belongs to the technical field of medical equipment, and particularly relates to a miniaturized transducer integrated ultrasonic tong head. In order to solve the problems that in the prior art, an ultrasonic knife mostly adopts an energy converter to convert ultrasonic waves into waveguide tube vibration and then convert tissues into heat energy gasification tissues, a large structure is needed, and the energy conversion efficiency is low, the ultrasonic knife comprises an upper clamp head and a lower clamp head which are hinged to each other; a plurality of working spaces are arranged in at least one of the upper plier head and the lower plier head, and independent piezoelectric ceramics are mounted in the working spaces respectively; and the piezoelectric ceramics are conductively connected through the internal space of the clamp head, and the positive electrode of the piezoelectric ceramics in the working space faces the inner surface of the upper clamp head / the lower clamp head. According to the ultrasonic knife, the working space is formed in the forceps head to contain the piezoelectric ceramic, the transducer is directly miniaturized, ultrasonic waves are directly converted into heat energy to cut tissue, miniaturization of the ultrasonic knife is achieved, and the energy utilization efficiency is improved.