170 results about "Argon flow" patented technology

The invention provides an argon flow and micro-positive pressure linkage control method for an electroslag furnace. The method comprises the steps that the oxygen content and micro-positive pressure signals in the furnace are collected; the future furnace condition is predicted through the deep belief network model; optimizing initial parameters of the fuzzy PID controller in an off-line manner by using a particle swarm algorithm; on the basis of the real-time signal and the prediction result, adaptively adjusting controller parameters on line; and finally, an argon flow and dust removal valve opening control instruction is output in a linkage mode. According to the method, future furnace conditions are predicted through the deep belief network model, the control advancement is realized, and the problem of large lag of the system is solved; offline parameter optimization is carried out on the fuzzy PID controller through a particle swarm algorithm, and excellent initial performance adapting to different working conditions is provided for the fuzzy PID controller; the parameters of the controller are adaptively adjusted through online fuzzy reasoning, so that the system has robustness for coping with a dynamic process; finally, accurate and stable linkage control of the oxygen content in the furnace and the micro-positive pressure is achieved through linkage calculation of the argon flow and a dust removal valve opening instruction.

The invention relates to a continuous casting process optimization method for inhibiting slag entrapment of casting powder, which adopts a CFD (computational fluid dynamics) calculation mode to obtain the slag entrapment rate of the casting powder in a crystallizer and the rate of capturing slag drops by a wall surface, can intuitively reflect the slag entrapment condition in the crystallizer, and realizes accurate control of the slag entrapment rate and the slag drop capturing rate. Furthermore, numerical simulation of continuous casting crystallizer slag entrapment is carried out on the basis of computational fluid mechanics (hereinafter referred to as CFD) under the conditions of certain section width and thickness of the crystallizer, certain inner diameter and insertion depth of the submersed nozzle and certain argon flow, and different dip angles of the submersed nozzle are adopted under the conditions of different pulling speeds; therefore, slag entrapment of the crystallizer casting powder is inhibited, and the occurrence rate of the slag entrapment defect of the automobile outer plate casting powder is reduced. Compared with the prior art, the method has the advantages that the slag entrapment rate and the slag drop capturing rate can be accurately controlled, and the steel-making defect occurrence rate of the surface of the automobile outer plate can be greatly reduced.

The invention relates to the technical field of steelmaking dust removal fan frequency adjustment, in particular to a steelmaking dust removal fan frequency conversion adjustment method which comprises the steps that target steel grade information and information of the current smelting stage of molten steel are obtained; and obtaining the initial carbon content and the initial nitrogen content of the molten steel. And setting the target carbon content and the target nitrogen content of the molten steel according to the smelting stage information. And according to the initial carbon content and the target carbon content of the molten steel, the oxygen flow required by smelting is obtained. And obtaining the nitrogen flow required by smelting according to the initial nitrogen content and the target nitrogen content of the molten steel. And the argon flow required by smelting is obtained according to the oxygen flow. And according to the oxygen flow, the nitrogen flow and the argon flow, the flue gas flow in the smelting period is obtained. And controlling the frequency of the dust removal fan based on the flue gas flow. The power consumption of the dust removal fan can be reduced, the production cost is reduced, the influence on the environment and the health of workers is reduced, and the problem that the overall efficiency is low due to local optimum of the dust removal fan can be solved.

The invention provides a crystal pulling method for improving the BMD defect density in monocrystalline silicon and a monocrystalline silicon rod, and belongs to the technical field of monocrystalline silicon crystal pulling, and particularly relates to the following steps: stabilizing the oxygen content in a crystal in a relatively high interval by cooperatively regulating and controlling the argon flow, the furnace pressure, the crucible rotating speed, the crystal rod rotating speed and the pulling speed, providing a sufficient oxygen source for generation of BMD defects, and improving the BMD defect density in the monocrystalline silicon on the basis of stabilizing the oxygen content in the crystal in a relatively high interval. In the equal-diameter process, temperature compensation is carried out on a crystal bar through a preset temperature compensation device, diffusion and precipitation of oxygen atoms are effectively promoted to form BMD crystal nucleuses, the BMD body defect density and the axial distribution uniformity are remarkably improved, the specification lower limit of the BMD density is promoted to be improved to 1.0 E + 11 ea / cm < 3 > or above, the internal gettering capacity of a silicon wafer is finally enhanced, and the service life of the silicon wafer is prolonged. And a reliable guarantee is provided for improving the performance and yield of the device.

The invention discloses a totally-closed argon protection device, which relates to the technical field of die casting pouring, and comprises a steel ladle nozzle, a funnel brick, a central casting pipe, an upper argon ring, a lower argon ring and a cover body arranged between the upper argon ring and the lower argon ring, an upper argon gas outlet and an upper argon gas inlet are formed in the upper argon gas ring, the upper argon gas outlet is formed in the inner side of the upper argon gas ring, and an opening of the upper argon gas outlet faces the inclined upper portion; and the lower argon ring is provided with a lower argon outlet and a lower argon inlet. The upper argon outlet blows upwards obliquely, upper argon flow drives air around the upper argon ring to flow outwards at the moment, so that air in the cover body is exhausted, meanwhile, when the lower argon outlet blows towards the middle injection pipe, argon is in contact with the middle injection pipe and then escapes, and part of argon escapes towards the inside of the cover body. Meanwhile, along with continuous outward flow of air around the upper argon gas ring, the whole cover body is continuously filled with escaping argon gas blown out by the lower argon gas ring, so that the oxygen content in the cover body is reduced.

The invention relates to a production method of nitrogen-containing low-carbon aluminum killed molten steel. The method comprises the following steps: 1) smelting by adopting a top-bottom combined blown converter; (2) the converter smelting process is controlled; (3) controlling the smelting end point of the converter; (4) controlling molten steel sedation; (5) controlling tapping of the converter; and (6) refining of a molten steel argon blowing station is controlled, the molten steel fed with the aluminum wire is subjected to weak stirring, the argon flow is controlled to be 50-100 L / min, the molten steel is subjected to weak stirring for 6-8 min, finished molten steel is obtained, and the finished molten steel comprises, by weight, 0.02%-0.045% of C, smaller than or equal to 0.034% of Si, 0.2%-0.3% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.012% of S, 0.025%-0.06% of Al, 0.0035%-0.0065% of N, smaller than or equal to 0.0035% of T [O] and the balance Fe and residual elements. According to the method, the problem of accurate nitrogen increasing in converter smelting of the low-carbon aluminum killed molten steel is solved, the cleanliness of the molten steel is improved, the argon blowing direct feeding process of the nitrogen-containing low-carbon aluminum killed molten steel is achieved, and the smelting cost is reduced.

The present application provides a full-process intelligent refining system applied to an LF refining furnace, which relates to the field of iron and steel metallurgy and includes: a slag-making control module that calculates the addition amount of slag-making agent; a temperature prediction module that predicts and controls the molten steel temperature in real time; a blowing argon control module that establishes a relationship model between the exposed area of molten steel and the bottom blowing argon gas flow rate; a wire feeding prediction module that calculates the feeding amounts of aluminum wire and calcium wire; an alloy calculation module that automatically controls the alloy addition amount; a machine-assisted module that collects data and performs sampling and slag sticking work; a main control module that is used to control the system operation; and a server for data storage and interaction. The present application uses technologies such as statistical methods and mechanism calculations to establish mechanism models for each refining process, predict and automatically control the refining process, effectively improving the hit rate of alloy components and the temperature compliance rate, and at the same time reducing alloy consumption and power consumption.

The application discloses a low-ash-consumption converter smelting method, adopts single-slag smelting, controls the converter scrap steel ratio in 8% to 26%, controls the top blowing oxygen supply flow in 3.0 to 4.0 Nm 3 / (min·t), controls the bottom blowing argon flow in 0.03 to 0.10 Nm 3 / (min·t); the smelting process is improved by the cooperation of the gun position and the charging; the solid waste slag is added in the converter blowing process, the content of CaO in the slag is controlled in 45% to 55%, and the content of MgO is controlled in 5.5% to 7.5%; meanwhile, the dust removal pressure ball is added to improve the activity of FeO in the slag, and the terminal carbon content of the converter is controlled to be less than or equal to 0.05%. By adding the solid waste slag in the smelting process, the slag needed to oxidize a large amount of iron elements to generate FeO is reduced, so that the total iron content of the slag is reduced; by adding the synthetic slag, the liquidity of the slag is ensured, and the carbon-oxygen reaction is promoted; the total iron content of the low-carbon steel converter terminal slag is stably controlled to be less than 14.5%, the metal yield is provided; the lime addition amount can be reduced, the lime addition amount is controlled to be less than or equal to 10 kg / t, and the cost is reduced.

The invention discloses a method for prolonging the fatigue life of spring steel through rare earth treatment. The method specifically comprises the steps that the total adding amount of rare earth elements accounts for 0.02%-0.15% of the mass of molten steel; rare earth elements are added in the later stage of LF refining, after alloying is completed, small-gas-amount clean argon blowing is conducted for 10 min to 20 min, and the argon flow is 15 NL / min to 20 NL / min; after hot rolling, cooling to below 550 DEG C at the cooling speed of 10-20 DEG C / s; and heating the hot-rolled spring steel blank to 450-550 DEG C, keeping the temperature for 2-3 hours, and then performing air cooling. According to the method, molten steel is purified through rare earth elements, long-strip-shaped MnS and other inclusions are converted into spherical rare earth oxysulfide (such as Ce2OS), stress concentration sources are reduced, and the crack initiation probability is reduced. Austenite grain growth is inhibited through rare earth elements, so that the spring steel obtains a uniform and fine structure (the grain size is greater than or equal to 9 grades), and the crack propagation resistance of the material is enhanced. Through the synergistic effect of tempering treatment and rare earth treatment, the comprehensive mechanical property of the spring steel is improved, and the fatigue life is greatly prolonged.

The invention relates to the technical field of molten steel refining. The invention discloses an LF furnace dynamic argon blowing method, device and equipment and a medium. The method comprises the steps that the molten steel temperature, the oxygen activity, the average diameter of inclusions and the number of the inclusions are obtained; based on a preset argon flow estimation model, estimating the total argon flow in the current period according to the molten steel temperature, the oxygen activity, the average diameter of the inclusions and the number of the inclusions; and on the basis of a preset argon gas distribution rule, according to the total argon gas flow of the current period, the argon gas flow of each subarea in the current period is obtained, and the argon gas flow of each subarea is adjusted. The total argon flow is calculated according to the molten steel temperature, the oxygen activity, the average diameter of the inclusions and the number of the inclusions in multiple dimensions, the accuracy of the argon flow is improved, then the argon flow of each partition is dynamically adjusted in different periods according to the argon distribution rule, and the stirring uniformity is improved.

The invention discloses a continuous casting steel capillary hole ventilation rod head which comprises 12%-18% of white corundum, 34%-40% of fused alumina zirconia, 12%-14% of active a-Al 2O3 micro powder, 12%-14% of fused magnesite, 2%-4% of silicon carbide, 18%-22% of graphite, 1%-3% of olivine, 2%-4% of mica powder, 0.5%-1.5% of magnesium sulfate powder and 1.5%-2.5% of calcium sulfate. And the additional resin binder accounts for 14-16% of the total mass of the mixture. According to the continuous casting steel capillary hole ventilation rod head and the preparation method thereof, the argon flow is accurately controlled, the molten steel flow speed is accurately controlled, the molten steel quality is stable, the fluctuation condition of the liquid level of a crystallizer is improved, inclusion blockage is reduced, and the number of steel casting furnaces is increased.

A continuous casting long nozzle argon sealing structure, argon blowing control system and control process belong to the technical field of steelmaking, the continuous casting long nozzle argon sealing structure, including long nozzle body and the bowl part outer periphery of its covering shell, the shell is provided with argon inlet, the bowl part outer periphery is provided with annular groove, the volume of the annular groove gradually increases from the argon inlet to its opposite side, the beneficial effects of the present application are that the argon sealing structure designed in the application is simple, the manufacturing cost is low, the argon is uniformly and effectively distributed in the long nozzle circumferential direction, the argon blowing control system and process involved automatically adjust the argon flow of corresponding gear according to the net weight of molten steel in the ladle, the argon blowing effect of molten steel casting process is monitored in real time, the failure rate is reduced, and the quality of molten steel is effectively improved.

The invention relates to the field of semiconductor materials, in particular to a crystal pulling thermal field control method, a crystal pulling thermal field system and application. The crystal pulling thermal field control method comprises the following steps: in an equal-diameter growth stage of czochralski silicon, when the curing rate of a silicon rod is less than or equal to 30%, controlling the argon flow to be 90-120SLPM, and controlling the furnace pressure to be 800-1000Pa. According to the crystal pulling thermal field control method, in the initial stage of equal-diameter growth where the oxygen segregation effect is most sensitive, argon flow and furnace pressure are cooperatively controlled in a specific'low flow-low pressure 'window, and a process environment beneficial to oxygen volatilization instead of entering crystals is actively created. The segregation and doping of oxygen atoms to a solid-liquid interface are effectively inhibited from the aspect of dynamics, and the method is the most critical step for realizing the overall low oxygen content of the silicon rod, especially reducing the oxygen content of the head and improving the axial uniformity.

The present invention discloses a smelting method for improving the bottom blowing air permeability of a newly launched ladle, comprising the following steps: Step 1, heating the bottom of the moving ladle; Step 2, before tapping, blowing argon at the bottom of the moving ladle; during tapping, blowing argon at the bottom of the moving ladle throughout the process. When tapping from the converter, the temperature is ≥1635°C, and only 0.4 - 0.5 Kg / t of metallic aluminum is added during tapping. The metallic aluminum is used as a deoxidizer and a heating agent; Step 3, after tapping is completed, adjust the argon flow rate to 300 - 500 L / min and perform strong argon blowing for 2 - 3 min. Stir through strong argon blowing to avoid cold steel condensation at the bottom of the ladle. After stirring, perform soft argon blowing for 30 - 60 s, then close the argon and connect the moving ladle to the moving small steam drum; Transfer the moving ladle to LF. During the transfer of the moving ladle to LF, maintain bottom blowing argon of the moving ladle through the moving small steam drum; Step 4, after the moving ladle enters LF, connect the ladle argon gas source, perform strong stirring to avoid cold steel condensation at the bottom of the ladle, and then perform normal refining; The present invention has the advantages of high molten steel refining air permeability, reducing the amount of cold steel formation, and preventing blockage of the porous plug.

The present application relates to a kind of multi-scene adaptive intelligent bottom argon blowing control method and system, comprising: the ladle reaches working position after determining gas permeability, receives the signal of sitting ladle, starts blowing argon, infrared thermal imager is opened to monitor picture and determine molten steel surface, fills complete all ladle liquid level area;Intelligent link all refining equipment PLC, according to different stages of metallurgical purpose, determine the bottom blowing stirring power, calculate the bottom blowing gas pressure, bottom blowing gas flow, the naked area of molten steel in continuous video stream, naked edge slag layer height and other related parameters are tracked and calculated in real time, further optimize bottom blowing control;Flow data instruction is issued to bottom blowing PLC, control the pressure and flow size of bottom blowing gas.The present application automatically receives argon blowing state molten steel video image continuously according to the need of on-site production, uses intelligent bottom blowing control to automatically distribute argon flow and pressure, ensure that each furnace reaches better bottom blowing stirring effect, give on-site production guidance, reduce production labor intensity.

The invention provides a tundish argon control system which comprises a control device, a first pipeline control valve, a mass flow meter and a second pipeline control valve, and a purging branch is formed by connecting the mass flow meter and the second pipeline control valve in series. The control device switches a control mode according to a tundish car position signal: a main pipeline control valve is opened when a tundish car starting signal is received, a main pipeline is closed and a purging branch is started after a casting position is reached, and the argon flow is accurately controlled by adjusting the opening degree of a branch control valve. The argon supply opportunity is advanced to inhibit molten steel oxidation, and the argon flow control precision is improved.

The invention discloses a high-performance N-type skutterudite thermoelectric material barrier layer with a composite structure and a preparation method thereof, and belongs to the technical field of thermoelectric conversion. The preparation method comprises the following steps that a Mo target is installed at a radio frequency target position, a W target is installed at a direct current target position, a skutterudite wafer substrate is fixed to a substrate, and the substrate is heated and vacuumized; and the argon flow is set and introduced, bias voltage is started, radio frequency and direct current power supplies are synchronously started to pre-sputter the target material, then radio frequency sputtering of the Mo connecting layer and direct current sputtering of the W barrier layer are sequentially carried out, and the W-Mo composite barrier layer is prepared. The method is used for solving the technical problems that due to the limitation of the high melting point of refractory metal W, a compact tungsten barrier layer is difficult to prepare through a common sintering process, the diffusion capacity of barrier elements is reduced, mismatch of thermal expansion coefficients of the metal W and a skutterudite matrix is large, and the barrier layer is prone to failure in a thermal cycle service environment.

The utility model discloses a protection dragging cover for titanium alloy pipeline welding. The protection dragging cover comprises an outer protection body, a hose clamp, an air inlet pipe and a baffle. The outer protection body is composed of a C-shaped base, the hose clamp is fixedly arranged at one end of the outer side of the outer protection body through the connecting neck, and the air inlet pipe is arranged at the other end of the outer side of the outer protection body. An argon flow guide groove is formed in the bottom of the inner side of the outer protection body and communicates with the gas inlet pipe. A filter screen fixing groove is further formed in the inner side of the outer protection body and is close to the argon flow guide groove, and the filter screen is installed on the outer protection body through the filter screen fixing groove. The two sides of the inner side of the outer protection body are each provided with a baffle fixing groove, and each baffle fixing groove is provided with a baffle. A notch is formed in the end, close to the hose clamp, of the outer protection body. The welding device is simple and reliable in structure, convenient to operate and capable of preventing surface oxidation of a welding bead caused by welding heat in the welding process and improving the welding quality.

The invention relates to a preparation method of a niobium diselenide lubricating film serving for current-carrying friction. The niobium diselenide lubricating film is prepared by adopting a radio frequency magnetron sputtering method. Sputtering gas is argon, a sputtering target material is niobium diselenide, the niobium diselenide thin film which is compact in structure and has good mechanical performance, electrical performance and lubricating performance is prepared by changing argon flow and substrate negative bias pressure, stable lubrication in 100 thousand cycles can be achieved in the atmospheric environment, and the friction coefficient is 0.08. Under a current-carrying friction working condition, compared with a traditional molybdenum disulfide film, the contact voltage is only 1 / 4, and the wear rate is reduced by more than half. The technology can be widely applied to antifriction and wear-resistant treatment of electric contact sliding parts in the fields of aerospace, electric power systems, semiconductor manufacturing and the like.

The invention discloses a high manganese steel vacuum refining process, which relates to the technical field of metallurgy, and comprises the following steps: in the slagging process of a ladle refining furnace, controlling the calcium-aluminum ratio of a slag system to be 1.5-2.0; in the pretreatment process of the vacuum refining furnace, the argon flow is controlled to be 30-60 NL / min; and after the vacuum refining furnace enters the high vacuum keeping stage, the argon flow is controlled to be 100-120 NL / min. While the N and H requirements are met, it is guaranteed that the temperature loss of the molten steel is small, the molten steel does not need to be returned to a ladle refining furnace for secondary refining to adjust steel components, and the production operation rate and the molten steel purity are improved.

The invention provides a crucible feeding method in monocrystalline silicon preparation and application, and relates to the technical field of semiconductor material manufacturing. Specifically, when the charging amount of the granular silicon in the crucible is less than or equal to 200kg, firstly, a small material is charged into the bottom of the crucible, then the granular silicon is charged into the middle of the upper part of the small material, then the space between the granular silicon and the wall of the crucible is filled with blocky silicon, and finally, the blocky silicon is flatly laid on the upper part of the granular silicon; when the charging amount of the granular silicon in the crucible is greater than 200kg, firstly charging a small material into the bottom of the crucible, then paving the granular silicon on the upper part of the small material, and finally paving the small material on the upper part of the granular silicon; in addition, the argon flow in the re-feeding stage is controlled to be higher than the argon flow in the initial charging stage. According to the invention, the sputtering phenomenon in the process of initially charging the granular silicon can be effectively reduced, the sputtering of the granular silicon is obviously reduced by measures of improving the charging mode, optimizing the heating process, controlling the melt state and the like, and the quality of monocrystalline silicon is improved.

This invention discloses a method and system for preventing electrode breakage in refining furnaces using quantitative bottom blowing of hot slag with low current, belonging to the field of metallurgical technology. The method includes: pouring circulating hot slag at a temperature not lower than 1450℃ into the ladle to soften the crusted slag layer; quantitatively adjusting the bottom blowing argon flow rate, extracting the argon pore opening diameter using a visual sensor and establishing a calculation model to maintain liquid level stability; switching the electrode raising and lowering to manual mode, setting a low arc-starting current of 10000 amperes, and using a laser reference to control the three-phase electrode flatness error within ±5mm; acquiring electrical and acoustic signals at a period of not less than 100 milliseconds to construct a multi-dimensional model to determine successful arc ignition; after stabilization, increasing the power at a preset slope and switching back to automatic mode. Through hot slag modification, quantitative bottom blowing, low-current arc ignition, and multi-dimensional monitoring, the risk of electrode breakage in the early stages of arc ignition is significantly reduced, improving the safety and stability of the refining process.

The invention discloses a Cr-rich multiphase six-element non-noble metal high-entropy alloy and a preparation method thereof, and belongs to the technical field of magnetic high-entropy alloys. The preparation raw materials comprise 65 to 70 at.% of Cr, 1 to 5 at.% of Fe, 1 to 5 at.% of Co, 1 to 5 at.% of Ni, 10 to 15 at.% of Al and 10 to 15 at.% of Mo, and the total amount is 100 at. The preparation method comprises the following steps: (1) uniformly mixing the raw materials; (2) continuously introducing argon; (3) raising the temperature at a constant speed, synchronously increasing the argon flow velocity, keeping the temperature at 1200 DEG C for 16 hours, and reducing the argon flow velocity; (4) cooling at a constant speed, synchronously increasing the argon flow velocity, keeping at 900 DEG C for 10 hours, and reducing the argon flow velocity; and (5) cooling at a constant speed, keeping the argon flow speed, and rapidly cooling to room temperature. According to the preparation method, a precise six-element non-noble metal element doping strategy is combined with a one-step heat treatment and staged rapid cooling process, so that cooperative regulation and control of high Curie temperature Tc and low saturation magnetization Ms are realized at low cost, and the key bottlenecks of high magnetic loss, poor magnetic stability and the like of a traditional magnetic material are effectively broken through; and a material basis is provided for development of new-generation high-frequency and high-temperature magnetic devices.

The utility model discloses an argon pressure reducer which comprises a device body, an air inlet is formed in the side surface of the device body, an air outlet is formed in the lower surface of the device body, a barometer head is arranged on the upper surface of the device body, a meter barrel is arranged on one side of the barometer head, and a floating column is arranged in the meter barrel. And fan blades are arranged in the device main body and are positioned below the meter barrel. According to the pressure reducer, the fan blades are additionally arranged in the pressure reducer, argon can drive the fan blades to rotate in the flowing process in the pressure reducer, then a power source is provided for use of the wind power lamp, along with rotation of the fan blades, light of the wind power lamp is turned on to illuminate the meter barrel, and therefore workers can observe the height of the floating column conveniently; therefore, the flow and pressure conditions of the gas can be known, an auxiliary lighting device is not needed, and the practicability of the pressure reducer is greatly improved.

This invention discloses a method for producing high-nitrogen steel with nitrogen enhancement, comprising: Step 1, converter smelting: using bottom blowing mode with nitrogen blowing throughout the process; Step 2, refining LF furnace: the LF furnace is bottom-blown with nitrogen before the third power supply and bottom-blown with argon after the third power supply. Slag formation, deoxidation, and alloying are performed during the refining LF furnace process, and the composition of the molten steel is controlled and tested; Step 3, refining RH furnace: nitrogen is used as the vacuum treatment driving gas, and the nitrogen content is controlled by adjusting the high and low vacuum times. After RH furnace vacuum breaking, calcium treatment is performed, carbonized rice husks are added to cover the molten steel surface, and argon flow is adjusted for soft blowing. Samples are taken to confirm the nitrogen content; Step 4, continuous casting: continuous casting is performed using a continuous casting machine. This application achieves precise control and stable maintenance of the nitrogen content in high-nitrogen steel by using nitrogen blowing throughout the converter process, nitrogen enhancement in the refining LF furnace before the third power supply, and nitrogen enhancement in the refining RH furnace, thus meeting the quality requirements of high-nitrogen steel. The production process is simple, which is beneficial for improving production efficiency and reducing production costs.

This invention relates to a method for preparing a hole transport layer in a perovskite solar cell and its application. The method requires no annealing throughout and specifically includes: S1. Using a nickel target, a first nickel oxide layer is prepared on a substrate surface by magnetron reactive sputtering at a pressure of 0.2–0.4 Pa and an argon gas flow rate of 200–600 sccm, wherein the argon to oxygen flow rate ratio is 20–30%; S2. Using a nickel oxide ceramic target, a second nickel oxide layer is obtained by magnetron physical sputtering at a pressure of 0.3–0.5 Pa and an argon gas flow rate of 200–600 sccm, wherein the oxygen to argon flow rate ratio is 1.5–5%. The technical problem to be solved is how to provide a method for preparing a hole transport layer that combines nickel reactive sputtering with nickel oxide ceramic target physical sputtering using magnetron sputtering equipment, requiring no annealing throughout the process, significantly reducing preparation costs, and forming a film structure more conducive to hole transport.

The invention relates to a novel method for realizing helical carbon growth by using an electro-deposition nickel catalyst, which comprises the following steps: (1) cutting a copper foil into a required size, and sequentially carrying out ultrasonic cleaning in ethanol and acetone to obtain a sample; (2) carrying out electro-deposition on the sample in a nickel plating electrolyte; (3) placing the Cu foil sample plated with the Ni film on a quartz boat, placing the quartz boat at the central position of a horizontal tube furnace, and introducing argon before heating; and (4) raising the furnace temperature, after the temperature is stable, introducing acetylene as a carbon source, maintaining the argon flow, reacting for several minutes, generating a carbon micro / nano coil on the surface of the Ni catalyst, stopping supply of acetylene after deposition is finished, and naturally cooling the sample to room temperature under the condition of continuously introducing Ar atmosphere so as to avoid oxidation. According to the method disclosed by the invention, extensible, repeatable and high-yield synthesis of the carbon micro / nano coil is realized, and a new technical approach is provided for high-performance electromagnetic wave absorption and preparation of a multifunctional composite material.

The application discloses a preparation method of an electrolytic alkaline water nickel-based electrode and belongs to the technical fields of electrolytic hydrogen production and material surface engineering. The electrolytic alkaline water nickel-based electrode is prepared by adopting pure nickel as an outer skin of a flux-cored wire, and the inner part is wrapped with 5-20 wt.% aluminum powder and 1-5 wt.% zinc powder. The specific steps include: cleaning and grit blasting the surface of a substrate; preparing an array of welding spots on the pretreated surface of the substrate by adopting a pulsed metal-arc additive process, and the process parameters are as follows: current 100-120 A, voltage 22-23 V, argon flow rate 15 L / min, dry elongation 10-11 mm, welding speed 15-35 mm / s, and pulse frequency 10-50 Hz; and the obtained electrode sample is placed into a mixed solution of potassium hydroxide and potassium sodium tartrate for water bath heating, so that the electrolytic alkaline water nickel-based electrode is obtained. The electrolytic alkaline water nickel-based electrode has high double-layer capacitance and low hydrogen production overpotential, and has good electrocatalytic performance.

The invention relates to a preparation method of a copper seed layer, and the preparation method comprises self-ionization plasma sputtering, and when the copper seed layer is deposited, the argon flow is 1sccm to 10sccm, the direct current sputtering power is 10kW to 20kW, the radio frequency bias power is 150W to 250W, and the initial temperature is 20 DEG C to 30 DEG C. The preparation method provided by the invention is carried out under the condition of relatively low initial temperature, so that damage and stress accumulation of high temperature to silicon dioxide are avoided; the method is carried out under the condition of high direct-current sputtering power, sputtering particle energy can be balanced, and compact deposition of Cu atoms is promoted. Due to the arrangement of radio frequency bias power, Ar atom bombardment can be enhanced, Cu atoms are migrated to low-energy crystal lattice sites, and surface protrusions are reduced; plasma can be stabilized by setting the argon flow, and uniform deposition of the copper seed layer is ensured. Therefore, according to the preparation method provided by the invention, the TSV electroplating quality can be improved, and the SIP interconnection reliability is improved.

The present invention discloses a method for manufacturing patterns on the surface of a flexible carbon nanotube film, comprising S1: placing a ceramic tray with a carbon nanotube film and a shielding module in the furnace of a tube furnace; S2: checking the smoothness of argon flow at the front and rear ends of the tube furnace, setting the tube furnace heating rate, reaction temperature, and reaction time, and starting the heating program; S3: when the temperature inside the tube furnace reaches the set reaction temperature, injecting a carbon source and hydrogen into the tube furnace to react and grow an amorphous carbon layer to obtain a patterned carbon nanotube film. The method of the present invention, namely covering the surface of the carbon nanotube film with a shielding module of a special shape, and secondary vapor deposition to grow a silvery amorphous carbon deposition layer, this amorphous carbon deposition layer has good hardness and is bonded to the surface of the carbon nanotube film through C-C chemical bonds, with good bonding firmness, forming an additive pattern with controllable size and shape without damaging the carbon nanotube film.