180results about How to "Diffuse fully" patented technology

The invention relates to the technical field of high-temperature alloy powder metallurgy, in particular to a preparation method of a high-strength cellular distribution gamma'phase high-temperature alloy, which comprises the following steps: preparing high-temperature alloy powder; the prepared high-temperature alloy powder is loaded into a first sheath, and the first sheath is vacuumized and sealed; carrying out preheating treatment on the first sheath; the high-temperature alloy powder in the first package sleeve is dispersed; opening the first sheath, and transferring the high-temperature alloy powder from the first sheath into a second sheath through a charging bucket under a vacuum condition; performing hot isostatic pressing treatment on the second sheath filled with the powder to obtain a first workpiece; cooling the first workpiece to obtain a second workpiece; removing a second sheath outside the second workpiece to obtain a blank, and performing heat treatment on the blank to obtain a target alloy; the powder metallurgy technology is utilized, the preparation technology is adjusted, a specially-distributed gamma'phase is formed in the alloy, and therefore the tensile strength and the endurance strength of the alloy are improved.

A diffusion preparation method of a Fe-rich high-coercivity samarium-cobalt magnet belongs to the technical field of magnetic material preparation, solves the technical problems that the Fe-rich samarium-cobalt magnet is not easy to form a good cellular structure and the process flow is long, and comprises the following steps: S1, weighing a samarium-cobalt permanent magnet alloy raw material, and preparing an alloy ingot; s2, alloy particles are prepared through a mechanical crushing method, and the alloy particles are prepared into alloy powder; s3, the samarium-cobalt alloy powder is subjected to magnetic field orientation forming and cold isostatic pressing forming, and a green body is prepared; s4, performing sintering solution treatment on the green body to prepare a sintered samarium-cobalt permanent magnet blank, and processing the blank into a samarium-cobalt magnet sheet; s5, performing primary PrCu diffusion treatment on the samarium-cobalt magnet sheet; s6, the magnet sheet is subjected to secondary SnFe diffusion treatment; and S7, performing aging treatment on the secondary diffusion sheet to obtain the samarium-cobalt permanent magnet. The preparation method provided by the invention is easy to operate, control and industrialize, and the prepared Fe-rich sintered samarium-cobalt magnet is excellent in performance.

According to the method, a one-pot copolymerization method is adopted, MBAA and borax serve as cross-linking agents, zwitterionic polyelectrolyte hydrogel containing SBMA, PVA, THMA and AMPS is prepared, and the zwitterionic polyelectrolyte hydrogel has excellent adhesion performance and biocompatibility and is suitable for the field of biological medicine. According to the method, the physical characteristics of the hydrogel are enhanced due to crosslinking sites and hydrogen bonds of polyvinyl alcohol. The cationic and anionic groups of SBMA improve the adhesion performance, and the reaction monomer THMA provides hydrogen-bond interaction to further promote adhesion, so that the prepared hydrogel adhesive shows excellent adhesion performance and biocompatibility, and is suitable for biological medicine application of wound dressing, drug release systems, tissue engineering and the like.

The invention discloses a hydrogen embrittlement-resistant aluminum-lithium alloy and a preparation method thereof. In order to improve the hydrogen embrittlement resistance of the aluminum-lithium alloy, the element Li is injected into the two faces of the thin-plate-shaped aluminum alloy through vacuum ion injection treatment, then all the elements are fully diffused in a vacuum annealing mode, brittle Li H and Li3A1 H6 phases formed during smelting in the prior art are avoided, and then the aluminum-lithium alloy with the excellent hydrogen embrittlement resistance is obtained. In addition, the metal Hf is added into the aluminum-lithium alloy, so that the ductility of the aluminum-lithium alloy can be effectively improved. Researches show that with the increase of the content of the Hf element, the elongation of the aluminum-lithium alloy is in a trend of increasing first and then decreasing. And on the basis of metal aluminum, when the proportion of Hf is 0.9 wt%-3.5 wt%, the ductility of the alloy material is higher than 10%.

The invention discloses a block anode for an aluminum electrolytic capacitor and a preparation method of the block anode, and belongs to the technical field of aluminum electrolytic capacitors, and the preparation method of the block anode for the aluminum electrolytic capacitor comprises the following steps: uniformly mixing dielectric substance coated aluminum powder, a binder and a solvent to obtain slurry, and drying the slurry to remove the solvent in the slurry to obtain mixed powder; the dielectric constant of the dielectric substance is greater than that of aluminum oxide; and briquetting and shaping the mixed powder to obtain a block, degreasing the block in an oxygen-containing atmosphere, and sintering in an oxygen-free atmosphere to obtain the block anode for the aluminum electrolytic capacitor. A later-stage anode cutting process is reduced through a block type integrated forming technology, and the problem that edge burrs are generated due to shearing friction between a metal cutter and anode foil is solved fundamentally. The dielectric constant of the block type anode dielectric layer is increased by introducing the dielectric substance, and the problem of low capacity of the anode foil of the aluminum electrolytic capacitor is solved.

The utility model discloses an inverter, which is characterized by comprising a case, a fan and a main radiator, the fan is arranged in the case; an air outlet is formed in the first side of the fan; the main radiator is arranged in the case, the main radiator is located on the first side of the fan, the main radiator and the fan are arranged at intervals, the main radiator comprises a first part and a second part which are arranged side by side, each of the first part and the second part comprises a plurality of first fins which are arranged in sequence, and a first radiating air channel is formed between every two adjacent first fins; the air outlet faces the first part and the second part, airflow exhausted by the air outlet can flow along the first heat dissipation air channels in the first part and the second part, and the distance between the air outlet and the first part is smaller than that between the air outlet and the second part. The diffusion space for diffusing the air flow is arranged between the fan and the first part and between the fan and the second part, and the air flow blown out of the air outlet can be diffused in the diffusion space, so that the main radiator also has better radiating efficiency.

The utility model relates to the technical field of rectification, in particular to an efficient rectification device which comprises a rectification tank, a reboiler and a condenser arranged at the top of the rectification tank, a feeding pipe is communicated with the middle of the side wall of the rectification tank, a feeding valve used for controlling feeding of the feeding pipe is arranged on the feeding pipe, a plurality of filter discs are evenly arranged in the rectification tank, and the reboiler is communicated with the condenser. A material scraping mechanism for scraping reaction materials on the inner wall of the rectification tank and preventing the materials from being adhered to the inner wall of the rectification tank during rectification is arranged in the rectification tank. When a gas phase and a liquid phase reversely flow in the rectification tank, the gas phase and the liquid phase are contacted on the filter discs for mass transfer due to the arrangement of the plurality of filter discs, so that the gas phase and the liquid phase are fully diffused on the filter discs, the contact area of countercurrent contact of the gas phase and the liquid phase is increased, the gas phase and the liquid phase are fully subjected to interphase heat and mass transfer, and the gas phase and the liquid phase are fully separated from each other. The volatile components in the liquid phase enter the gas phase, and the non-volatile components in the gas phase are transferred into the liquid phase, so that the rectification efficiency is improved.

The invention discloses a preparation method of a rod-like selenium nano-carrier, and belongs to the technical field of nano-pesticides. The rod-like selenium nano-carrier is formed by converting chitosan modified amorphous selenium (a-Se) into single crystal ash selenium (t-Se). The amorphous selenium is initially spherical, and after chitosan modification, the spherical amorphous selenium is converted into single crystal ash rod-shaped selenium nanoparticles. The length of the rod-like selenium nano-carrier is 590-610 nm, the diameter of the rod-like selenium nano-carrier is 20-25 nm, the effective average particle size of the rod-like selenium nano-carrier is 90-110 nm, the drug loading rate is 39.28% + / -2%, and the encapsulation efficiency is 64.90% + / -3%. In addition, the invention also provides an application of the rod-like selenium nano-carrier in a nano bactericide material.

The invention discloses a method for preparing a strong-texture bismuth telluride-based thermoelectric material through construction molding, and the method specifically comprises the steps: respectively weighing Bi, Te and Sb elementary substances according to a design ratio, crushing the Bi, Te and Sb elementary substances into fine powder, sieving the fine powder, and carrying out ball-milling mixing to obtain a mixed material; dividing the obtained mixed material into two equal parts, and carrying out sintering molding by adopting spark plasma sintering equipment, so as to obtain a No.1 sintering blank and a No.2 sintering blank which are the same in size; carrying out mechanical grinding and polishing on one surface of the obtained blank to form a mirror surface; and putting the treated mirror surfaces into a mold in a contact manner, and sintering and molding by using spark plasma to obtain the constructed and molded strong-texture thermoelectric material. The method has the beneficial effects that through two times of spark plasma sintering, sufficient diffusion of alloy elements is facilitated, so that the traditional melting alloying step is omitted, the production efficiency is improved, and the cost is saved. Meanwhile, the orientation consistency of the thermoelectric material can be greatly improved through the secondary sintering forming technology, and the strong-texture thermoelectric material is obtained.

The invention discloses electroplating sewage treatment equipment and method, and relates to the technical field of sewage treatment. Comprising an equipment body, a medicament adding assembly and a cleaning assembly, the medicament adding assembly and the cleaning assembly are fixed to the outer wall of the equipment body, a screening assembly used for intercepting precipitates and an adsorption assembly used for pumping sewage are arranged in the equipment body, and the equipment body comprises a main box body; the agent adding assembly comprises a plurality of agent boxes fixed to the outer wall of the main box body, and adding pumps are fixedly connected to the tops of the agent boxes. According to the sewage treatment device, chemicals are added into the main box body in a small amount and multiple times according to a set sequence, so that the chemicals are fully diffused in sewage and fully react with the sewage, and precipitates generated in the reaction process can be continuously intercepted and screened out in the reciprocating lifting process of the lifting plate; the diffusion effect of the medicament in the sewage is better facilitated, the treatment capacity of the medicament is improved, and the influence of precipitates on the diffusion of the medicament is prevented.

The invention relates to the technical field of servers, in particular to a heat dissipation device for server equipment, which comprises a box body, a box cover is mounted at the upper end of the box body through a fixing mechanism, smoke sensors are fixedly connected to two corners of the rear part of the lower end of the box cover, and a heat dissipation seat is detachably mounted in the box body. The heat dissipation device of the server not only plays a role in heat dissipation during normal operation of the server, but also can play a role in extinguishing smoke and fire at the first time through combination of heat dissipation blowing and inert gas release when the server breaks down and smokes and catches fire, further damage to the server is reduced in time to the maximum extent, and the service life of the server is prolonged. And the difficulty of timely remedy of the server is reduced. Through mutual cooperation of the auxiliary blowing mechanism and the limiting mechanism, two-way release of inert gas can be achieved, the inert gas can be more fully diffused in the server, development of smoke and fire is further restrained, and the smoke and fire extinguishing effect is further guaranteed.

The invention belongs to but is not limited to the technical field of nickel-based alloy additive manufacturing, and discloses a heat treatment method and system for reinforcing and toughening an additive-formed heterogeneous nickel-based alloy, and the chemical components of the additive-manufactured nickel-based alloy are qualitatively and quantitatively analyzed by utilizing EPMA; carrying out homogenization heat treatment design by utilizing Thermo-Calc software; based on the obtained heat treatment temperature and dendritic crystal spacing, a linear curve of distribution of elements along with time diffusion is obtained, and the optimal temperature and time of homogenization heat treatment of the nickel-based alloy are obtained; and respectively calculating TTT phase diagrams corresponding to dendritic crystal nuclei and interdendritic crystal regions by utilizing a TTT phase diagram module in JMatPro software, and obtaining the optimal temperature and time of the stress relief heat treatment of the nickel-based alloy based on the characteristics of the precipitated phase of the nickel-based alloy. According to the method, a uniform grain structure is obtained after the material is rapidly cooled, the residual stress level in a component is reduced, and the strength and toughness of the material are improved.

The invention relates to a mechanical device for grouting and a grouting method. Comprising a grouting vehicle, a mechanical arm base, a driver, a mechanical arm arranged between the mechanical arm base and the driver, and a drilling and grouting integrated grouting device arranged at the tail end of the driver. The grouting device comprises a plurality of grouting pipes and water pumping pipes, each water pumping pipe is provided with a power device, and simultaneous grouting and water pumping are achieved through the grouting pipes and the water pumping pipes; the grouting vehicle is provided with a slurry stirrer and conveys slurry to the driver and the grouting pipe through a slurry conveying pipe, and grouting is achieved. And the grouting device and the mechanical arm can be folded and stored in the grouting vehicle. The device can be rotated and adjusted in multiple directions to reach a target grouting position, the number of the branch pipe supports and the number of the water pumping pipes can be selected according to the state of a grouting stratum and surrounding rock, and the device is convenient to disassemble and convenient to transport and construct; the underground water level is reduced through mutual cooperation of the water pumping pipe and the grouting pipe so that the slurry retention rate can be increased, grouting slurry can be diffused more evenly, and the expected grouting effect is achieved.

The present invention discloses a wafer electroplating device for wafer wet process equipment, comprising a plating tank shell with a cavity for electroplating, wherein the plating tank shell is provided with adjacent and detachable wafer hanger parts and a plating diffusion and shielding part, wherein the wafer hanger part is provided with a single-sided exposure port for exposing one side of the plating surface of the wafer, and the plating diffusion and shielding part is provided with a multi-stage guide surface directly opposite to the single-sided exposure port. The wafer electroplating device for wafer wet process equipment provided by the present invention has a compact overall structural arrangement, a sophisticated internal structure and comprehensive functions, and multiple wafers can be electroplated at the same time through the wafer hanger part, and each wafer is plated on only one side of the surface, and the plating liquid can be fully diffused through the multi-stage guide surface of the plating diffusion and shielding part to ensure that the plating liquid is evenly plated on the wafer to meet the requirement of uniform thickness.

The utility model discloses a medicament raw material mixing device capable of preventing precipitation in the technical field of medicament preparation, which comprises a stirring tank, a sieve tray is rotatably mounted in the stirring tank, a driving component for driving the sieve tray to rotate is mounted on the stirring tank, and a stirring component is mounted at the bottom of the sieve tray; a supporting pipe is installed in the center of the top of the stirring tank, a lifting adjusting assembly is installed in the supporting pipe, the bottom end of the lifting adjusting assembly is connected with a scraper blade and a grinding roller, and the scraper blade and the grinding roller can be driven to move reversely when the lifting adjusting assembly operates. According to the medicament raw material mixing device, the problems that when an existing medicament raw material mixing device is used for feeding medicaments, coagulated medicament blocks cannot be treated, the coagulated medicament blocks are directly fed into the tank body, and the agglomerated blocks are not easy to diffuse and are easy to precipitate, so that the concentration of actual mixed materials is influenced, and the medicament raw material mixing device is not favorable for people to use are solved.

The invention discloses a sea urchin-shaped material which is integrally in a spherical sea urchin shape, and the diameter of the sea urchin-shaped material is 3.0-6.0 [mu] m; nanotubes are arranged on the periphery of the spherical sea urchin shape; small spheres with core-shell structures are uniformly embedded in the interior of the base body of the spherical sea urchin-shaped material and at the tops of part of the nanotubes. The invention further discloses a preparation method of the sea urchin-shaped material and application of the sea urchin-shaped material to preparation of a hydrogen peroxide electrode material through an electro-catalysis two-electron oxygen reduction reaction. The sea urchin-shaped material disclosed by the invention has excellent electro-catalysis two-electron oxygen reduction performance.

The invention relates to the technical field of nozzles, and discloses a combined nozzle of a high-pressure water mist machine, which mainly comprises a fixed column, a movable mechanism and an auxiliary mechanism, a fixed cavity is formed in the center of the upper half part of the fixed column, and a sealing cavity is formed in the center of the lower half part of a nozzle shell; the fixing column is movably connected with the upper half portion of the movable mechanism through the fixing cavity, the spray head shell is movably connected with the lower half portion of the movable mechanism through the sealing cavity, and the movable mechanism is fixedly connected with the auxiliary mechanism. When the combined spray head is not used, a movable rod moves upwards under the action of a vertical spring and pushes an auxiliary mechanism to synchronously move upwards, so that an auxiliary circular plate is attached to a spray head shell, an upper auxiliary plate seals an outlet of a nozzle, the nozzle in the spray head shell is effectively prevented from being exposed outside for a long time, and the probability that dust enters the nozzle to cause blockage is reduced; and the fire extinguishing efficiency is improved.

The invention provides a motor and a motor system, the motor comprises a casing, and a stator core, a rotor core and a rotating shaft which are located in the casing, the rotor core sleeves the rotating shaft, the stator core surrounds the rotor core and is fixed on the inner circumferential wall of the casing, an air gap is arranged between the rotor core and the stator core, a winding is arranged on the stator core, and the winding is wound around the rotor core and is fixed on the inner circumferential wall of the casing. An annular isolation cover is further arranged in the machine shell and comprises an annular partition plate and a cylindrical partition plate, the outer edge of the annular partition plate is fixed to the inner wall face of the machine shell, the cylindrical partition plate is connected to the inner edge of the annular partition plate, a containing cavity is formed between the cylindrical partition plate and the wall face of the machine shell, and the part, protruding out of the stator iron core, of the winding is located in the containing cavity. The casing is provided with a first injection hole, the outer side of the peripheral surface of the stator core is provided with a first flow channel, and one end of the first flow channel is communicated with the first injection hole and the accommodating cavity, so that the technical problem of poor cooling effect of the stator winding in the motor in the prior art can be solved.

The invention discloses a psychiatric relaxation and counseling device, which relates to the technical field of rehabilitation exercise, and comprises a bed frame and a kneading mechanism, wherein the kneading mechanism comprises a sandwich plate fixed to the bottom of the bed frame, a square cylinder shell is installed on the sandwich plate, an electromagnet and a mounting shell located above the electromagnet are fixedly installed inside the square cylinder shell, a pressing rod and a magnetic block are slidably connected inside the mounting shell, the pressing rod is infused with hypnotic essential oil, and the pressing head deflects and kneads the pressing position back and forth while pressing the muscle, so as to stimulate the muscle and soft tissue, promote blood circulation and metabolism, and thus achieve a better relaxation effect, and the acceleration of blood circulation accelerates the diffusion and absorption of essential oil molecules in the skin, so that this design can enable the human body to fully absorb the hypnotic essential oil, strengthen the use effect of the hypnotic essential oil, make the patient fall asleep more easily, effectively alleviate the patient's anxiety, irritability, insomnia and other problems, and achieve the effect of relaxation and counseling.

The utility model discloses a pool wall spraying maintenance device, which relates to the technical field of concrete spraying maintenance equipment, and comprises a pool wall, a spraying system, a support system, an automatic water supply system, a water delivery hose, a three-way joint and a water supply line, the spraying system is fixedly arranged on the support system, the spraying system is fixedly arranged on the pool wall through the support system, and the automatic water supply system is fixedly arranged on the pool wall through the water delivery hose. The water delivery hose and the water supply line are both communicated with the automatic water supply system, and the three-way connector is arranged on the water delivery hose and used for being connected with the spraying system in series. According to the device, the safety risk during maintenance construction of the pool wall of the water pool of the sewage treatment plant can be obviously reduced, the device needs manual intervention during installation, other working states are all automatic, the manual high-altitude operation time is shortened, and the probability of safety accidents during maintenance construction is reduced.

The invention discloses a high energy-saving multiphase flow rapid mixing reactor, which is characterized in that an inlet sleeve seat is provided with a liquid inlet A along the axial direction; a first-stage impeller is provided in a first-stage inlet shell, and a circuitous flow channel connected to a second-stage inlet shell is provided inside the first-stage inlet shell; a radial liquid inlet B is provided on the second-stage inlet shell; a second-stage cutting impeller is provided in the second-stage inlet shell, and a second-stage flow diversion guide vane is provided on the right side of the second-stage impeller; a third-stage impeller is provided in an interstage shell a, and a third-stage guide vane is provided at the left end of the third-stage impeller; a fourth-stage impeller is provided in an interstage shell b, and a radial liquid outlet is provided on the outlet shell. The advantages of the invention are simple structure, good stability, safety and reliability, fast full-interface mixing speed, high efficiency, and sufficient raw material reaction; the mixing time is greatly shortened, sufficient diffusion and propagation between molecules are achieved, and energy is saved.

The embodiment of the invention provides an adsorption column experimental device. The adsorption column experimental device comprises a shell assembly and a sieve plate, the shell assembly is provided with a containing space, an air inlet channel and an air outlet. The sieve plate is arranged in the accommodating space so as to divide the accommodating space into an adsorption cavity and an overflowing cavity; the air inlet channel is communicated with the overflowing cavity, the air outlet is communicated with the adsorption cavity, so that an air flow path which passes through the overflowing cavity and the adsorption cavity in sequence from the air inlet channel to the air outlet is formed, and at least the position where the air inlet channel is communicated with the overflowing cavity is located on the side, close to the adsorption cavity, of the overflowing cavity. According to the adsorption column experimental device, airflow distribution in the accommodating space can be improved, so that the utilization rate of an adsorbent is increased.

A high-alloy steel electroslag ingot and its homogenization method are provided, comprising the following steps: S1, electroslag ingot pretreatment: removing surface oxide scale and crack defects, and grinding to a surface roughness Ra≤6.3μm; S2, staged heating: heating to 800-900℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1000-1100℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1200-1300℃ at a rate ≤150℃ / h and holding for 10h. -20h; S3, Stepped cooling: Turn off the heating device and cool with the furnace to 800-1000℃, hold for 2-6h; cool to 500-650℃ at a rate of ≤50℃ / h, hold for 2-6h; open the furnace door and introduce cooling air at a speed of 0.5-3m / s to cool to room temperature, obtaining homogenized high-alloy steel electroslag ingots; S4, Post-homogenization testing: the relative standard deviation of each alloying element is ≤5%; the average grain size is ≤10μm; the Brinell hardness fluctuation range is ≤15HBW. This invention eliminates component segregation, refines grain structure, optimizes process parameters, is highly efficient and energy-saving, easy to promote, and has strong practicality.

The present invention provides a method for improving the thermoplasticity of a hard-to-deform nickel-based powder high-temperature alloy, which solves the technical problem of the difficulty in processing the hard-to-deform nickel-based powder high-temperature alloy. The method steps of the present invention are: (1) determining the full melting temperature Ts of the γ′ phase of the hard-to-deform nickel-based powder high-temperature alloy, and obtaining the preheating temperature T1 as (Ts‑30)‑(Ts‑20)°C; (2) keeping the hard-to-deform nickel-based powder high-temperature alloy at the preheating temperature T1 for a time t; (3) cooling the hard-to-deform nickel-based powder high-temperature alloy in step (2) to 500‑1000°C at a slow cooling rate of 0.8‑1°C / h; (4) air cooling to room temperature, controlling the precipitation of harmful phases, and obtaining a nickel-based powder high-temperature alloy with a locally curved grain boundary and containing a coarse γ′ phase. The present invention can be widely used in the field of material processing technology.

The invention discloses a pulse detonation combustion chamber outlet gas pressure pulsation attenuation device. The device comprises an air inlet pipe, a cylindrical pressure stabilizing cavity, conical flow guide structures, perforated spoilers, a pressure stabilizing cavity extension section and an exhaust pipe, the air inlet pipe and the exhaust pipe are arranged on the two sides of the pressure stabilizing cavity respectively, and the conical flow guide structures are arranged in the pressure stabilizing cavity in a bilateral symmetry mode; the perforated spoiler is perpendicular to the conical flow guide structure and extends upwards from the maximum section of the conical flow guide structure until the perforated spoiler is flush with the inner side wall face of the pressure stabilizing cavity and the inner side wall face of the pressure stabilizing cavity extending section, a plurality of through holes are formed in the perforated spoiler to form a gas flowing channel, and the perforated spoiler extends outwards to be connected with the pressure stabilizing cavity extending section through a flange. The advantages of the pressure stabilizing cavity, the flow guide structure and the perforated spoiler are organically fused, the pressure pulsation amplitude of gas at an outlet of the pulse detonation combustion chamber can be effectively reduced, the stability and uniformity of gas at an inlet of a turbine are improved, and then the utilization efficiency of the turbine for unsteady-state energy of the gas is improved.

The application belongs to the technical field of metal materials, and discloses a high-strength and high-toughness medium-manganese steel based on warm rolling and deep cryogenic treatment and a preparation method thereof. The preparation method comprises the following steps: combining a specific warm rolling process (720 DEG C~760 DEG C) with liquid nitrogen deep cryogenic treatment (soaking for 0.3~0.6h) and supplementing low-temperature tempering (180 DEG C~220 DEG C). The process induces deformation through warm rolling, promotes the transformation and refinement of austenite into martensite in combination with deep cryogenic treatment, and then eliminates internal stress and precipitates fine carbides through low-temperature tempering, so as to synergistically control the microstructure. The technical bottleneck that the strength and plasticity of traditional medium-manganese steel are difficult to be compatible is effectively solved, and the organization is super-refined and the stability is improved. The obtained medium-manganese steel has a good match between ultra-high strength and excellent plasticity, the yield strength is greater than 1800MPa, the tensile strength is as high as 2300MPa, the elongation after fracture is more than 17%, and the comprehensive mechanical properties are significantly improved.

The invention discloses a high-stability rubidium-boron-silicon superhard compound and a preparation method thereof, and belongs to the technical field of superhard materials, the superhard compound is a composite structure block material formed by taking rubidium-boron-silicon as a basic framework and introducing an alkali metal regulator; the composite structure comprises a high-entropy ceramic matrix and nano twin crystals distributed in the matrix; the high-entropy ceramic matrix is a solid solution consisting of rubidium, boron, silicon and alkali metal cations introduced by the alkali metal regulator; the nano twin crystal is a lamellar crystal structure with coherent twin boundaries; through collaborative innovation of a material system and a preparation process, the rubidium-boron-silicon superhard compound with ultrahigh hardness and excellent thermal stability is developed, and a brand new solution is provided for superhard materials serving in an extremely high-temperature environment.

The present application discloses an optical lens and an electronic device. The optical lens includes, in order from the first side to the second side along the optical axis: a first lens with negative optical power, whose first side is convex and whose second side is concave; a second lens with optical power, whose first side and second side are at least convex; a third lens with optical power, whose first side is concave and whose second side is convex; a fourth lens with positive optical power, whose second side is convex; a fifth lens with positive optical power, whose first side is convex; and a sixth lens with positive optical power, whose second side is convex; the optical lens satisfies R1 / TTL≥4 and ‑6≤R6 / T34<0, wherein R1 is the radius of curvature of the first side of the first lens, TTL is the distance from the center of the first side of the first lens to the imaging surface on the optical axis, R6 is the radius of curvature of the second side of the third lens, and T34 is the air interval between the third lens and the fourth lens on the optical axis.

This application provides a diffusion furnace, comprising a diffusion furnace body, a containment space enclosed by the diffusion furnace body, a support boat, and temperature control rods. The support boat is disposed within the containment space along a first direction, and the temperature control rods are disposed within the containment space along a second direction, on the side away from the support boat. The first and second directions are perpendicular to each other. The containment space includes multiple different temperature control zones, and multiple temperature control rods are respectively disposed within the multiple temperature control zones and fixed to the inner wall of the diffusion furnace body corresponding to the temperature control zones. Thus, this structure allows for temperature adjustment of different temperature control zones within the containment space via the temperature control rods, ensuring the uniformity of the diffusion gas within the containment space, resulting in sufficient chip diffusion and thereby improving chip yield.

The utility model discloses a submerged plant planting appliance, and belongs to the technical field of submerged plant planting. Comprising a water tank, a sucking pump is fixedly connected to one side of the outer wall of the water tank, a moving frame is arranged in the water tank, a fixing plate is fixedly connected to the interior of the moving frame, a plurality of inserting holes are formed in the fixing plate in a penetrating mode, air is injected into a fixing sleeve through the sucking pump, the air impacts fan blades of cross-shaped overturning blades, and the fan blades are driven to rotate. Under the pushing of air, the cross overturning blade rotates, meanwhile, the air is exhausted from the filter head, the air increases oxygen needed by plants in the nutrient solution, the situation that the growth and health of submerged plants are affected due to insufficient air in water is prevented, the cross overturning blade rotates to drive the rotating rod and the stirring blade to rotate synchronously, the stirring blade rotates to constantly stir the nutrient solution, and the nutrient solution is stirred continuously. Oxygen injected into the nutrient solution can be fully diffused, and meanwhile, a natural water environment is simulated, so that plants can adapt to the natural environment when the plants are transplanted in the later period.