52 results about "Nickel base" patented technology

The invention relates to a forming method for composite electroplating of an MEMS (Micro Electro Mechanical System) probe. Structural patterns of a needle tip or / and a needle body are / is photoetched through a micro-electro-mechanical process, the needle tip or / and the needle body is / are formed through electroplating of a composite plating solution after pretreatment, the composite plating solution is obtained by mixing a metal base solution and a turbid liquid, the metal base solution is a nickel base solution and / or a rhodium base solution, and the turbid liquid is a nickel base solution and / or a rhodium base solution. The suspension is formed by suspending nano-powder in water through a dispersing agent. Compared with the prior art, the technology provided by the invention has the following advantages that the MEMS process technology is combined with the composite plating solution to be used for various probe structures, and the performance of the prepared material is greatly improved compared with that of a pure metal coating; the composite plating solution prepared from the plating solution and the second-phase particles is high in stability, and the electroplating process is easy to operate; the nickel-based composite plating solution can be used for obtaining a main body material with higher hardness, better wear resistance and better flexural property; the rhodium-based composite plating solution is used for preparing a needle point material, has higher hardness and wear resistance, and improves the brittle fracture problem.

The application provides a flat POGO PIN female head connector, which comprises a stainless steel back shell, a plastic front cover and a plastic upper cover arranged at the lower end and the upper end of the front side of the stainless steel back shell respectively, three upper stretch terminals equidistantly arranged on the plastic upper cover, three lower stretch terminals equidistantly arranged on the plastic front cover, and a plastic body integrally injection molded on the upper stretch terminals and the lower stretch terminals; the surface of the upper stretch terminals is sequentially plated with a nickel base layer, a palladium-nickel alloy layer and a gold layer, the surface of the contact area of the lower stretch terminals is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer and a platinum alloy layer to form an anti-electrolytic corrosion plating layer; the end of the upper stretch terminal is provided with a cantilever, and the ends of the three cantilevers are stacked and riveted with a flat plate part; and the front side of the plastic front cover is a flat surface. The flat POGO PIN female head connector realizes quick mutual matching, high-reliability power supply and signal transmission.

The present application relates to a kind of ruthenium doped nickel copper-based heterostructure catalyst and its preparation method and application.Wherein, ruthenium doped nickel copper-based heterostructure catalyst includes foam nickel base and in situ growth on foam nickel base on ruthenium doped nickel copper-based heterostructure Cu2O-Ni (OH) 2, Ru is doped in the crystal lattice of Cu2O-Ni (OH) 2 heterostructure.Ruthenium doped nickel copper-based heterostructure catalyst preparation method includes the following steps: surface cleaning is carried out to foam nickel;Oxalic acid, copper salt and ruthenium salt are dissolved in water, to obtain precursor solution;Foam nickel is placed in precursor solution and hydrothermal reaction is carried out, and ruthenium doped nickel copper-based heterostructure catalyst is obtained after washing and drying.The ruthenium doped nickel copper-based heterostructure catalyst disclosed in the present application can be applied to industrial-grade electrocatalytic decomposition of water hydrogen evolution reaction, and has good electrocatalytic hydrogen evolution performance.

The application discloses a kind of foam nickel load iron nickel bimetallic phosphide heterojunction catalyst and its preparation method and application, belong to electrocatalytic material technical field.The application is in situ grown by hydrothermal deposition in combination with low-temperature phosphorization process, and is prepared on foam nickel base Phosphide iron / Phosphide nickel heterojunction catalyst (Fe2P / Ni2P@NF).The prepared catalyst shows excellent performance in the electrocatalytic reduction of nitrate synthesis ammonia and high nitrate wastewater degradation.The preparation process of the catalyst of the application is simple, low in cost, and little to environmental pollution, and the self-supporting electrode prepared by integration can be directly applied to proton exchange membrane electrolytic cell, and has wide application prospect.

The invention discloses a zinc-nickel battery cathode current collector and a preparation method thereof, and relates to the technical field of zinc-nickel secondary batteries. The negative current collector comprises a copper base material or a nickel base material and an electroplated layer arranged on the surface of the copper base material or the nickel base material, the electroplated layer comprises tin-bismuth alloy, the content of bismuth in the tin-bismuth alloy is 5-15 wt%, and the balance is tin. The tin-bismuth alloy electroplated layer is arranged on the surface of the current collector base material, so that the corrosion resistance and the conductivity of the negative current collector are effectively improved, the interface bonding force between the current collector and an active substance is improved, the cycling stability of the zinc-nickel battery is remarkably improved, and the technical problems that an existing current collector is easy to corrode in an alkaline electrolyte and the interface impedance is increased are solved. The preparation method can be widely applied to the field of preparation of negative current collectors of zinc-nickel secondary batteries and other alkaline secondary batteries.

The utility model discloses a PTC heater structure, including a plurality of PTC heating tube, a plurality of radiating fins and mounting seat, a plurality of PTC heating tube installation is positioned on mounting seat, and a plurality of radiating fins interval arrangement sets up on PTC heating tube, still be provided with corrugated elastic metal sheet between a plurality of radiating fins and mounting seat, the corrugated elastic metal sheet is nickel base alloy material quality, a plurality of radiating fins and mounting seat are all aluminum material quality, the contact surface of a plurality of radiating fins is close to PTC heating tube and has coated nano alumina heat conduction coating, like this, through the elastic deformation absorption vibration energy, and gradient thermal expansion design, reduce the thermal stress, reduce the mechanical stress between mounting seat and fin aluminum pipe, prevent the connection loose after long -term use.

The utility model relates to the field of power electronic devices, in particular to a damping ring for an electric reactor. Comprising an upper shell, a lower shell which is detachably connected with the upper shell, a ring shaft which is detachably arranged between the upper shell and the lower shell, and a winding type annular iron core which is sleeved on the ring shaft and is formed by winding an iron-nickel base alloy belt. According to the utility model, the structural design is further optimized while the good electromagnetic performance of the damping ring is maintained, and the installation convenience, the heat dissipation performance and the universality are improved.

The invention belongs to the technical field of battery pole pieces, and particularly discloses a nickel battery positive pole piece suitable for a three-electrode test and a preparation method of the nickel battery positive pole piece. The method comprises the following steps: carrying out surface pretreatment on a foamed nickel base material, and cutting the foamed nickel base material according to requirements to obtain a conductive substrate; mixing an active substance, a conductive agent, an adhesive (polyvinylidene fluoride), an additive (yttrium oxide) and a solvent to obtain electrode slurry; and then coating a conductive substrate with the electrode slurry, drying and removing floating powder on the surface to obtain the nickel battery positive pole piece suitable for the three-electrode test. The preparation process of the nickel battery positive plate is simple, feasible and novel, and the prepared nickel battery positive plate is relatively high in capacity, good in adhesiveness of active substances and long in service life.

The application discloses a method for preparing electrode materials by magnetic field-induced ion replacement and electrode materials, and belongs to the technical field of functional material preparation. The method comprises the following steps: loading a cobalt-containing metal organic framework material on the surface of a nickel base material through a self-assembly process, and then placing the loaded composite material in a multi-metal mixed salt solution to perform an ion replacement reaction under the driving of an external magnetic field. The method activates the soft magnetic characteristics of the base material by using a magnetic field, can overcome the steric hindrance and high replacement energy barrier caused by the large difference in ion radius, and can thus realize efficient replacement at normal temperature and pressure, form unique active sites and pore structures, and adjust the electronic properties and charge distribution of the material through the strain effect induced by the difference in ion radius, so that the oxygen evolution activity and stability are optimized. The method does not require complex equipment and harsh conditions, is controllable and simple in operation, has the potential for large-scale preparation, and provides a feasible scheme for reducing the cost and increasing the efficiency of an alkaline electrolytic cell.

The invention relates to a Nickel based superalloy and a component of it comprising (in wt%) 12,0% to 15,0% Chromium (Cr), 1,0% to 2,0% Molybdenum (Mo), 3,0% to 12,0% Tungsten (W), 1,2% to 2,0% Aluminum (Al), 1,2% to 2,0% Titanium (Ti) 5 1,2% to 2,0% Niobium (Nb), 0,03% to 0,13% Carbon (C), 0,005 to 0,025% Boron (B) 0,008% to 0,1% Zirconium (Zr), optionally: Silicon up to 0,2% and / or Manganese (Mn) up to 1,0%.

The invention discloses a high-activity large-size water electrolysis hydrogen evolution electrode, and relates to the technical field of clean energy materials, the electrode comprises a foamed nickel substrate and a nickel oxide micro-nano structure layer generated in situ on the skeleton surface of the foamed nickel substrate through pulse laser ablation; according to the high-activity large-size water electrolysis hydrogen evolution electrode, the nickel oxide micro-nano structure layer is generated on the skeleton surface of the foamed nickel substrate in situ through ablation of the pulse laser, so that the nickel oxide micro-nano structure layer is firmly connected with the foamed nickel substrate, and the electron conduction efficiency and the structural stability can be improved; the stability of the electrochemical activity is further improved; meanwhile, the nickel oxide micro-nano structure layer shows high hydrogen evolution catalytic activity, low overpotential, high electrochemical activity and excellent long-term stability in alkaline electrolyte.

The application discloses a preparation method of a ruthenium oxide doped molybdenum oxide / nickel hydroxide full-pH electrolytic water catalyst, and belongs to the technical field of catalyst material preparation. The preparation method of the ruthenium oxide doped molybdenum oxide / nickel hydroxide comprises the following steps: firstly, mixing a molybdenum salt with a sodium dodecyl benzene sulfonate aqueous solution, and then placing the mixture into a foamed nickel base; subsequently, performing a hydrothermal reaction, and then performing a calcination treatment in a reducing atmosphere; finally, immersing the calcination product into a RuCl3 solution to obtain a self-supported heterojunction catalyst RuOx-MoO3 / Ni(OH)2. Through the composite structure design of the transition metal molybdenum / nickel base material and the noble metal ruthenium oxide cluster, the technical bottleneck of low activity and poor stability of the traditional ruthenium-based catalyst is effectively solved. The obtained catalyst exhibits excellent hydrogen evolution reaction (HER) activity and long-term stability in a wide pH range.

The utility model relates to an electrolytic photocatalysis device applied to the field of energy chemistry, which comprises reaction equipment, a reaction tube arranged at the inner end of the reaction equipment, a cushion block fixedly connected to the lower side of the inner end of the reaction tube, a quartz electrolytic tank placed at the upper end of the cushion block, a graphite anode and a nickel-based alloy cathode arranged at the inner end of the reaction tube, the graphite anode and the nickel-based alloy cathode extend into the quartz electrolytic tank, a sealing flange is arranged at the upper end of the reaction tube, a heat preservation tube plug is arranged at the inner end of the reaction tube, an air inlet valve is arranged in the middle of the upper end of the reaction tube, an air outlet valve is arranged on the right side of the upper end of the reaction tube, and a sealing electrode is arranged at the upper end of the reaction tube. The reaction equipment can support two working modes of the heating hearth and the solar simulator at the same time, is suitable for carrying out electrolysis and photo-thermal catalytic reaction on molten salt substances under the high-temperature condition, and can compare the performance difference of electrolysis products under the two heating modes.

This application relates to the field of battery technology, providing a highly conductive nickel-plated copper foil material, its application, and a method for preparing the nickel-plated copper foil material using a warm isostatic pressing (WIP) apparatus. The method includes the following steps: S100, pretreating the copper foil to obtain a copper foil substrate; S200, depositing a nickel base layer on at least a portion of the surface of the copper foil substrate via chemical plating to obtain a first intermediate product; S300, forming a nickel main layer on at least a portion of the surface of the first intermediate product via pulse electroplating to obtain a second intermediate product; S400, subjecting the second intermediate product to warm isostatic pressing to obtain the nickel-plated copper foil material. This application utilizes the deposited nickel base layer as a non-porous underlay, followed by pulse electroplating to refine a dense nickel layer, and finally, warm isostatic pressing under high temperature and high pressure to close pores and promote atomic diffusion at the copper-nickel interface to form a gradient bonding layer, eliminating defects and continuous conductive pathways, thereby improving conductivity, mechanical strength, and electrochemical stability.

The utility model discloses a standard screen device for nickel-based alloy. The standard screen device comprises a pressing plate, a tightening assembly, an upper cover, an upper-layer screen, a lower-layer screen, a base plate, an upper plate, an ultrasonic device I and an ultrasonic device II. The upper cover, the upper-layer screen, the lower-layer screen and the base plate are circles which are matched with one another, are sequentially, coaxially and horizontally stacked together from top to bottom, and are coaxially placed on the horizontally arranged upper plate; a pressing plate is horizontally arranged on the upper surface of the upper cover, and the upper cover, the upper-layer screen, the lower-layer screen and the base plate are fixed to the upper plate through cooperation of the pressing plate and the binding assembly. An ultrasonic device I is arranged on one side of the outer circumferential surface of the upper-layer screen, and nickel-based alloy powder is subjected to primary screening through cooperation of the ultrasonic device I and the upper-layer screen; an ultrasonic device II is arranged on one side of the outer circumferential face of the lower-layer screen, and nickel base alloy powder is subjected to double screening through cooperation of the ultrasonic device II and the lower-layer screen. According to the utility model, the screening efficiency and the screening precision are improved.

The invention relates to a nickel oxide powder granulation method for plasma spraying, which belongs to the technical field of granulation methods, and comprises the following steps: step 1, mixing a plurality of raw materials in proportion, adding a solvent, and heating and stirring by using a mixing device to form a stable solution; 2, adding nickel oxide particles with the particle size of 5-10 [mu] m by adopting a mixing device, and keeping stirring to form a stable turbid liquid; 3, a centrifugal spray granulation drying machine is used, nickel oxide particle powder with a certain diameter is formed through granulation under specific conditions, the nickel oxide powder is attached to the nickel base material through plasma spraying, the nickel oxide electrode is obtained, the bonding strength, corrosion resistance and electrochemical performance are improved, due to the fact that plasma spraying is high in temperature, materials are molten at the high temperature, and the corrosion resistance of the nickel oxide electrode is improved. When the coating is sprayed to the surface of a base material, the material is in a molten state, is partially reduced, is attached to the surface of the base material, and is cooled to form a high-strength coating with a certain structure, so that a better binding rate can be achieved, and the service life is prolonged.

The invention provides a surface treatment method of an alkaline electrolytic water hydrogen production electrode, which comprises the following steps: a first etching process: contacting a sand-blasted nickel base material with a first etching solution to obtain a nickel base material I; a second etching process: contacting the nickel base material I with a second etching solution to obtain a nickel base material II; the first etching solution contains nitric acid, citric acid and hydrogen peroxide, and the dosage mass ratio of the nitric acid to the citric acid to the hydrogen peroxide is 1: (0.1-2): (0.05-1); the second etching solution contains oxalic acid, phosphoric acid and acetic acid, and the dosage mass ratio of the oxalic acid to the phosphoric acid to the acetic acid is 1: (0.1-1): (0.1-1). According to the method, the nickel base material subjected to sand blasting is subjected to etching treatment twice, the surface of the base material is rapidly etched through rough etching to form a large microstructure, then the formed microstructure is further refined through fine etching, the surface is finer and more uniform, the mechanical bite force of the coating and the base material can be remarkably increased, and the corrosion resistance of the coating is improved. And defects in the coating can also be reduced.

The application discloses a kind of based on saccharide template modified ZSM-5 composite carrier load crystal face Ni2P hydrogen dechlorination catalyst and preparation method, belong to the preparation technical field of dechlorination catalyst.The method includes: first with polysaccharide modified porous ZSM-5 as main body, with LDH base carrier and be compounded to prepare LDH-multistage hole ZSM-5 composite carrier;Afterwards, nickel nitrate, citric acid and ethylene glycol are mixed, and impregnation solution is prepared, and the composite carrier of preparation load nickel base precursor;Finally, the composite carrier of load nickel base precursor is with sodium hypophosphite in nitrogen atmosphere, in situ induction Ni2P (201) Crystal face, Ni2P (211) Crystal face preferential growth, after cooling, passivation treatment, obtain immediately.The hydrogen dechlorination catalyst prepared by the application has excellent low-temperature activity, strong resistance to poisoning and high operating stability, and can achieve efficient and economic deep removal of organic chlorine in the low-temperature purification process of organic solid waste gasification fuel gas.

The application discloses a metal powder negative electrode for an aqueous metal-air battery, the aqueous metal-air battery and a preparation method thereof, and relates to the technical field of batteries. The metal powder negative electrode comprises a foamed nickel base body, a porous structure is formed in the foamed nickel base body, metal powder is filled in the porous structure, and a leakage prevention layer is arranged on the foamed nickel base body and used for preventing the metal powder from leaking out. The PPI of the foamed nickel base body is 10-110, and the diameter of the metal powder is 0.018mm-0.18mm. The metal powder negative electrode has good corrosion resistance, adjustability, processability and low cost, the contact between the metal powder and the current collector is stable, the corrosion and passivation of the metal powder negative electrode are greatly alleviated, and the utilization rate of the metal powder and the discharge performance of the metal-air battery are improved. The metal-air battery has excellent discharge capacity and discharge time under high current density.

The utility model provides a nickel base alloy welding device with a water cooling structure. The nickel base alloy welding device with the water cooling structure comprises a device main body, a motor box is fixedly connected to the device main body, a motor base is fixedly connected to the motor box, a rotating motor is installed on the motor base, a driving wheel is arranged on the rotating motor, a belt is arranged on the driving wheel, and the water cooling structure is arranged on the device main body. A driven rod is rotationally connected to the device body, a grinding block is fixedly connected to the driven rod, a driven wheel is fixedly connected to the driven rod, a first fixing block is fixedly connected to the driving wheel, a second fixing block is fixedly connected to the device body, and a shielding scraper is fixedly connected to the device body. The nickel base alloy welding device with the water cooling structure has the effect of prolonging the service life of alloy.

The utility model discloses a clamping device for welding a thin-wall nickel base tube, which comprises a supporting tube, a clamping device, a driving device, a clamping device, a clamping device and a clamping device, and is characterized in that the supporting tube rotates under the driving of the driving device and is parallel to the thin-wall nickel base tube; the multiple sets of clamping pieces are arranged at intervals in the length direction of the supporting pipe; any clamping piece comprises a first supporting plate, a second supporting plate and a third supporting plate. The first supporting plate is fixed to the supporting pipe. The fixed end of the pushing device is fixed on the first supporting plate; the pushing end of the pushing device is connected with the pressing block, and the thin-wall nickel base pipe is located between the first supporting plate and the pressing block. By means of the collaborative design of the multiple sets of clamping pieces and the supporting pipe, uniform stress of the thin-wall nickel base pipe is achieved, plastic deformation caused by local stress concentration is avoided, and the welding seam position precision and the fusion depth stability are guaranteed.

The utility model belongs to the technical field of economizers, and discloses a self-ash-cleaning low-temperature economizer which comprises a tube bundle, the tube bundle is arranged in a snake shape, and the outer surface of the tube bundle is plated with a gradient composite coating. The outer surface of the tube bundle is wrapped with a dust collecting bin, a plurality of nozzles are arranged above the tube bundle and located in the dust collecting bin, the nozzles are communicated with an external high-pressure air supply system through air inlet channels, a lower dust collecting hopper is arranged below the tube bundle and installed on the bottom wall of an inner cavity of the dust collecting bin, and a dust discharging device is installed at the bottom of the dust collecting bin. The tube bundle adopts an asymmetric reducing design, the tube diameter of the flue gas inlet end of the tube bundle is larger than that of the outlet end of the tube bundle, and the gradient composite coating comprises a nickel base alloy layer, a silicon carbide enhancement layer and a hydrophobic ceramic layer which are sequentially arranged from inside to outside. According to the utility model, ash of the economizer can be conveniently removed, the tube wall is not damaged, and the tube bundle can be prevented from being corroded, so that the service life of the tube bundle is prolonged.

The utility model discloses iron-nickel-based composite board polishing equipment which comprises a mounting base, the mounting base is provided with a driving wheel, a driven wheel and a motor, the motor is in transmission connection with the driving wheel, an abrasive belt is arranged between the driving wheel and the driven wheel, the mounting base is further provided with a tensioning wheel, the periphery of the tensioning wheel is provided with a plurality of protruding edges distributed in parallel to the axial direction of the tensioning wheel, and the protruding edges are connected with the motor. The protruding edges are distributed around the axis of the tensioning wheel at equal intervals. An air blowing device is arranged at one end of the tensioning wheel, and the air blowing direction of the air blowing device faces the outer surface of the abrasive belt. Due to the arrangement of the tensioning wheel, the abrasive belt can be in a tensioning state, and the polishing effect of the abrasive belt is improved; when the tensioning wheel rotates, the protruding edges arranged on the tensioning wheel can impact the inner surface of the abrasive belt, so that chippings attached to the outer surface of the abrasive belt fall off or loosen, then the chippings are blown off through high-pressure air blown out by the air blowing device, covering of the chippings on abrasive materials on the abrasive belt is reduced, and the polishing effect of the abrasive belt is improved.

The invention relates to the technical field of catalysts, in particular to a preparation method of a NiFeCe-DHDBC MOF composite catalyst and application of the NiFeCe-DHDBC MOF composite catalyst in electrolyzed water.The catalyst takes nickel salt, iron salt and cerium salt as metal sources, a specific organic reagent as a regulator and a mixed solution of DMF and deionized water as a reaction medium, a foamed nickel substrate is subjected to standing reaction in the mixed system, and the NiFeCe-DHDBC MOF composite catalyst is obtained. In-situ loading of the NiFeCe-DHDBC MOF material on the surface of the foamed nickel is achieved, and a composite catalytic system is formed. According to the NiFeCe-DHDBC MOF material prepared by the invention, by virtue of a synergistic effect among ternary metals, unique advantages of an MOF structure and good interface bonding brought by in-situ loading, the OER catalytic activity obviously superior to that of a traditional nickel-iron-based catalyst and a pure foamed nickel substrate is shown in an alkaline electrolyte, and the material has good operation stability in a high-current density interval; the method is suitable for an industrial application scene of hydrogen production by electrolysis of water, provides a new technical path for development of an efficient non-noble metal OER catalyst, has technical innovation and practical application value, and has a wide industrial prospect.

The application discloses an electrolytic water hydrogen evolution composite catalytic electrode and a preparation method thereof. The composite catalytic electrode comprises a nickel base, a composite catalyst layer loaded on the nickel base, and a metal oxide protective layer coated on the surface of the composite catalyst layer; wherein the composite catalyst layer comprises platinum, ruthenium, palladium noble metal catalysts and catalytic additives, the metal oxide protective layer is a nano-porous metal oxide layer, and the metal oxide is one or more of valve metal oxides and rare earth metal oxides. The electrolytic water hydrogen evolution composite catalytic electrode comprises a platinum, ruthenium, palladium and additive composite catalyst layer and a metal oxide protective layer coated on the outside; the metal components in the composite catalyst layer can be stably combined with the metal base, the metal oxide protective layer is similar in structure to the oxides in the composite catalyst layer, and can be firmly covered on the surface of the composite catalyst layer; so that the composite catalytic electrode can exhibit high electrolytic water hydrogen evolution catalytic activity, high structural stability, long-term stability, strong anti-reverse polarity and strong anti-deposition capacity.

The invention relates to a production method of a high-chromium high-aluminum high-titanium-iron-nickel base alloy billet, which adopts a short flow process of electric furnace-AOD furnace-VOD furnace-LF refining furnace-continuous casting for smelting, and specifically comprises the following steps: continuous casting adopts vertical bending type casting, and specifically comprises the following steps: starting casting when the temperature of a rotary table steel ladle is lower than 1450 DEG C, controlling the superheat degree to be less than or equal to 35 DEG C, performing argon sealing on a continuous casting long steel nozzle, and performing continuous casting on the continuous casting long steel nozzle; argon is injected before tundish casting is started to well protect casting, the casting speed is 0.8-1.0 mm / s, EMS is started, and the electromagnetic stirring current is 600-1200 A; the wide surface of the cold mold water of the crystallizer I is 2900-3100L / min, and the narrow surface of the cold mold water of the crystallizer I is 320-360L / min; weak cooling is adopted for secondary cooling mold water, the steel billet is placed in a window to be rapidly air-cooled after being produced, and finally a continuous casting sheet billet is obtained. The molten steel is high in purity, nodulation and blockage are avoided during casting, and a casting blank is free of surface cracks.

The invention relates to the technical field of aircrafts, in particular to a precooling heat exchanger for an aircraft and the aircraft.The precooling heat exchanger comprises a heat exchange core, the heat exchange core comprises at least three partition plates which are stacked and arranged at intervals, and an air flow channel is formed between every two adjacent partition plates; wherein a heat exchange working medium runner is formed between the other two adjacent partition plates, the heat exchange core body sequentially comprises a high-temperature section area, a medium-temperature section area and a low-temperature section area in the first direction, the partition plates of the high-temperature section area and the heat exchange fins are made of nickel base alloy materials, the partition plates of the medium-temperature section area and the heat exchange fins are made of titanium aluminum alloy materials, and the partition plates of the low-temperature section area are made of titanium aluminum alloy materials. The partition plates and the heat exchange fins of the low-temperature section area are all made of aluminum alloy materials. The partition plate of the high-temperature section area is connected with the partition plate of the medium-temperature section area through a flexible expansion compensation piece, and the partition plate of the medium-temperature section area is connected with the partition plate of the low-temperature section area through a flexible expansion compensation piece; and in the second direction, part of the plate sections of the partition plates form sawtooth-shaped plate sections, so that the risk of deformation and failure of the heat exchanger is reduced, and the light weight of the heat exchange core body is achieved.

The application discloses a kind of bifunctional catalyst electrode materials and preparation method and application thereof, the method comprises: nickel source, molybdenum source and sulfur source are sequentially dissolved in glycol aqueous solution, then with foam nickel base together sealed and carried out hydrothermal reaction, again the reaction product is washed with pure water and dried, obtains bifunctional catalyst electrode material.The method selects abundant reserves, relatively lower price transition metal as main active component, avoids using expensive noble metal, so that bifunctional catalyst electrode material can be obtained at lower cost.The bifunctional catalyst electrode material has unique structure design and good chemical stability, has high activity for glycerol electrooxidation and hydrogen evolution reaction after being applied to the electrode of the preparation of double-function electrolytic cell, and can maintain the stability of catalytic performance in long-time electrolysis process, thereby effectively promoting glycerol oxidation coupled hydrogen evolution, which is conducive to reducing hydrogen production cost and promoting large-scale application of hydrogen energy.

The utility model relates to the technical field of a tailstock, and discloses a tailstock mechanism with a brake, which comprises an upper tailstock body, a clamping plate main body is fixedly arranged on the outer side of the upper tailstock body, a clamping device main body is arranged on the outer side of the clamping plate main body, a lower tailstock body is fixedly arranged below the upper tailstock body, and a brake is arranged on the lower tailstock body. And a position sensor is arranged below the clamping plate main body. According to the tailstock mechanism with the brake, the upper tailstock body and the lower tailstock body are made of gray cast iron materials, so that the upper tailstock body and the lower tailstock body have excellent wear resistance and shock absorption performance, and the wear resistance and the shock absorption performance of the device are improved; the tensile strength of the clamping plate is remarkably improved compared with common steel, the extremely high mechanical stress of a hydraulic clamping device is improved, then the stability of the structure is improved, meanwhile, through the sprayed nickel-based alloy coating, the high-temperature oxidation resistance and toughness are achieved, and the temperature resistance of the clamping plate body is improved.

The invention relates to the technical field of preparation of electrode materials, in particular to a preparation method of an AEM-WE anode material, and the preparation method specifically comprises the following steps: S1, pickling a metal nickel base material; s2, preparing an acidic etching solution; s3, putting the metal nickel base material into an acidic etching solution, and preparing an anode material precursor by an etching method; s4, preparing an alkaline deposition solution; and S5, placing the anode material precursor in an alkaline deposition solution, and depositing to obtain the anode material. The anode material is prepared by adopting an etching method and a deposition method, and the preparation method is safe, simple, short in time consumption, low in equipment requirement, low in energy consumption and easy for large-scale production; the prepared anode material has excellent uniformity and mechanical and structural stability.