139 results about "Activation energy" patented technology

The invention discloses a solid electrolyte with high ionic conductivity, which comprises the following components: a matrix material: a halide super ion conductor with a LiMXCl4 structure, M being selected from at least one of Ta, Nb and Hf, X being O or F, a chemical general formula being LiM1-aX1-6Cl4, a being equal to 0.1-0.3, and an electrochemical window being regulated to 2.5-4.0 V through fluorine-chlorine mixed anion substitution; the second phase material is a core-shell structure compound, the core is Li3TiCl6, and the shell is a Li3PS4 interface layer; and the sintering aid is a compound of Li3BO3 and LiF. Through fluorine-chlorine mixed anion regulation and control and MO2Cl4 octahedron synergistic tilting mechanism, the ionic conductivity of the solid electrolyte is remarkably improved, the lithium ion conductivity at room temperature is greater than or equal to 10mS / cm, the activation energy is less than or equal to 0.2 eV and is superior to that of the traditional halide electrolyte, and meanwhile, the free volume between chains is optimized through Zr < 4 + > / Sn < 2 + > gradient doping, so that the performance of the solid electrolyte is improved. The core-shell structure compound and the silane coupling agent are combined for modification, so that the electrochemical window is effectively widened to 2.5-4.0 V, the interface side reaction is inhibited, and the composite material is adaptive to a high-voltage positive electrode material.

The invention relates to the technical field of electrochemical machining, in particular to an electroplate liquid additive automatic supply control method based on conductivity monitoring data. The method comprises the steps that the temperature, the original conductivity and the carbonate concentration of electroplating liquid are obtained, an activation energy coefficient is determined based on the change trend of the original conductivity and the temperature, dynamic thermodynamic decoupling treatment is conducted on the original conductivity, and the net conductivity of the electroplating liquid is generated; according to the cumulative variation of the net conductivity in the historical time period and the total amount of the additive in the historical time period, the transmission inertia factor of the electroplating liquid is calculated in combination with the carbonate concentration, and the retardation risk index is determined based on the evolution trend of the transmission inertia factor, so that a PID control algorithm is reconstructed, and the supply amount of the additive is obtained; and performing automatic replenishment control based on the replenishment amount. According to the method, the accuracy of automatic supply control is improved by evaluating the degradation state of the bath solution components and self-adaptive integral saturation suppression.

The invention discloses a polyanion halide solid electrolyte material as well as a preparation method and application thereof. The chemical formula of the halide solid electrolyte material is Li < 3 > YCl < 6-2x > Br < x > I < x >, wherein 0 < x < 3. The chemical formula of the halide solid electrolyte material is Li < 3 > YCl < 5.8 > Br < 0.1 > I < 0.1 >, Li < 3 > YCl < 5.6 > Br < 0.2 > I < 0.2 >, Li < 3 > YCl < 5.4 > Br < 0.3 > I < 0.3 >, Li < 3 > YCl < 5.2 > Br < 0.4 > I < 0.4 >, Li < 3 > YCl < 5.0 > Br < 0.5 > I < 0.5 >, Li < 3 > YCl < 4.8 > Br < 0.6 > I < 0.6 >, Li < 3 > YCl < 4.6 > Br < 0.7 > I < 0.7 >, Li < 3 > YCl < 4.4 > Br < 0.8 > I < 0.8 >, Li < 3 > YCl < 4.2 > Br < 0.9 > I < 0.9 >, Li < 3 > YCl < 4.0 > The invention provides a series of Li3YCl6-2xBrxIx by taking economical and efficient Li3YCl6 as a main body and combining with an anion mixing strategy, the Li3YCl6-2xBrxIx has high ionic conductivity of 1.98 mS cm <-1 > and low activation energy of 0.257 eV, and has good compatibility with a Li4Ti5O12 (LTO) positive electrode and a Li-In alloy negative electrode. The construction of the anion mixed state not only can reduce the binding effect of an anion frame on Li < + > migration and improve the ionic conductivity, but also can soften anion crystal lattices and reduce the activation energy. More importantly, due to the introduction of I <->, a LiI self-limiting passivation interface layer is generated in situ, so that the stability of a Li interface is enhanced.

The invention relates to the technical field of thermal protection of hypersonic aircrafts, in particular to a multi-scale prediction method for an ablation behavior of a thermal protection structure based on data driving, which comprises the following steps: performing molecular dynamics simulation on a gas-solid interface of an ablation type thermal protection material to obtain simulation calculation activation energy; obtaining the experimental activation energy of the material; performing Bayesian optimization on the simulation calculation activation energy and the experiment measured activation energy to obtain optimized activation energy; performing macroscopic wall surface ablation simulation by taking the optimized activation energy as a boundary condition to obtain an ablation parameter database recording ablation wall surface temperatures, ablation rates and ablation depths corresponding to different flow rates, altitudes and time; training a radial basis function neural network based on the ablation parameter database, and establishing an ablation prediction model; obtaining a prediction result; the calculation efficiency and accuracy of the thermal protection structure ablation behavior multi-scale prediction method can be improved.

The invention relates to a multi-scale prediction method for the oxidative ablation behavior of a carbon / carbon porous heat-proof material, and belongs to the technical field of aerospace science, in particular to a multi-scale prediction model for the oxidative ablation behavior of the carbon / carbon porous heat-proof material. A chemical reaction standard enthalpy value and reaction activation energy are analyzed based on a gas-solid interface micro-model of a carbon / carbon porous heat-proof material, and then pore scale fluid mechanics calculation is performed in combination with a porous medium model; explaining an evolution mechanism between gas-solid interfaces by using a micro-scale and pore-scale simulation method, and predicting an ablation process surface evolution process; according to the invention, fluid flow, thermal reaction and heterogeneous chemical reaction in the porous medium in the ablation process can be coupled and simulated at the same time; according to the method, the action mechanism of the heterogeneous chemical reaction at the gas-solid interface in the oxidation ablation process of the carbon / carbon porous heat-proof material can be disclosed, and the distance change after ablation and the ablation surface roughness in the ablation process can be predicted more accurately.

The invention discloses a layered structure solid oxide fuel cell composite cathode catalyst as well as a preparation method and application thereof, and belongs to the field of solid oxide fuel cells. The invention aims to solve the problem that the electro-catalytic performance and low-oxygen reduction reaction activation energy of the existing medium-temperature solid oxide fuel cell are poor. The Sr2. 9Ca0. 1Fe2O7-CuO composite cathode catalyst is prepared by adopting a sol-gel method and a solid phase method, the components in a sol-gel system are in a nanometer range, the reaction is easier to carry out, the reaction temperature is low, the prepared materials are uniformly mixed, and the sol-gel method is carried out in a solution, so that even if the content of doped elements is very low, the doping can be easily realized; the material is prepared by adopting a solid phase method, and the method has the advantages of convenience in operation, simple synthesis process, uniform particle size, no agglomeration of powder particles, good filling property, low cost, high yield and the like, so that the electrochemical performance of the cathode catalyst is improved, and the method is convenient to operate and suitable for industrial production.

The invention discloses a ship tail gas dynamic purification method and device. A real-time monitoring network is constructed by collecting multi-point sensing data of ship tail gas and operation parameters of a purification device, a purification bottleneck area is recognized based on a closed-loop control loop, and encrypted arrangement of sensors is implemented to generate an encrypted monitoring field; collecting monitoring data from the encrypted monitoring field, performing disturbance compensation to form a steady-state measurement value, and constructing an adaptive control domain through the steady-state measurement value; absorbent activity evaluation is carried out on the self-adaptive control domain to extract attenuation characteristics, and the attenuation characteristics are reversely mapped into supplementary dosage to generate a feedforward control signal; analyzing and identifying a speed control step through microcell reaction kinetics, applying temperature regulation and control to the speed control step to generate activation energy compensation, and converting the activation energy compensation into a heating power instruction to form a thermal management sequence; a cooperative control sequence is generated based on coupling of a thermal management sequence and a stoichiometric balance table, the cooperative control sequence is decomposed into a fast and slow response control loop, and efficient and stable purification of ship exhaust is achieved.

The invention discloses an epoxy resin pyrolysis kinetics optimization method and device. The invention aims to accurately obtain the pyrolysis kinetic parameters (such as activation energy and pre-exponential factors) of the epoxy resin through a TG-FTIR combined technology (thermogravimetric analysis and Fourier transform infrared spectroscopy synchronous monitoring), and optimize the pyrolysis conditions (temperature, heating rate and retention time) based on the dynamic change of the product, so as to obtain the pyrolysis kinetic parameters (such as activation energy and pre-exponential factors) of the epoxy resin. Accurate acquisition of pyrolysis kinetic parameters, improvement of pyrolysis condition optimization efficiency, accurate control of a multi-stage pyrolysis path and balance of energy consumption and product value are realized.

The invention discloses a method for screening a high-catalytic-activity nitrogen-doped graphene-loaded single-metal-atom ammonia synthesis catalyst, and belongs to the technical field of ammonia synthesis. The method comprises the following steps: constructing an original graphene configuration; constructing a nitrogen-doped graphene configuration; a nitrogen-doped graphene loaded monometal configuration is constructed; the Eform is formed to judge the stability; constructing an adsorption configuration of reactant molecules; analyzing the relaxation configuration to judge the activation degree; the adsorption stability is judged according to the adsorption energy Eads; determining a path of N2 thermal reduction reaction; adopting NEB and Dimer methods to construct a transition state spatial configuration; reaction heat and activation energy are calculated, and activity differences of different catalyst surfaces are analyzed. Based on density functional theory calculation, catalyst screening standards with formation energy, adsorption energy and activation energy barriers as indexes are established, the high-activity catalyst is screened out theoretically, the experiment trial and error cost is reduced, and the catalyst development efficiency is improved.

The invention discloses a sodium metavanadate-based catalyst activity gradient regulation and regeneration system and method, and relates to the technical field of industrial catalyst regeneration, the sodium metavanadate-based catalyst is of a unique layered structure, the sodium metavanadate-based catalyst comprises an outer layer, a middle layer and an inner layer from the surface to the interior in sequence, and active components and doping elements of all the layers are different; the outer layer is doped with high-content sodium metavanadate and manganese oxide, reactant molecules can be quickly adsorbed and activated in the initial stage of the reaction, the manganese oxide can provide additional active sites, reduce reaction activation energy and promote quick start of the reaction, and the middle layer is doped with a proper amount of sodium metavanadate and cerium oxide, so that the reaction is more stable in the process of the reaction. The cerium oxide can adjust migration and conversion of oxygen species on the surface of the catalyst, optimize the reaction path, improve the selectivity of a target product and reduce side reactions, the inner layer is doped with the low-content sodium metavanadate and tungsten oxide, and the structural stability of the catalyst under high-temperature and long-time reaction is maintained by means of the high stability of the tungsten oxide.

The invention relates to the technical field of materials and data processing, and discloses a method for constructing a damping layer material loss factor and temperature correlation model, which effectively overcomes the defect of insufficient adaptability of a traditional damping material model in a wide temperature range required by a thermal power plant by fusing a molecular chain segment dynamics mechanism and a macroscopic constitutive behavior. The method has the technical advantages that on the basis of the physical basis of a molecular motion energy barrier theory constraint model and in combination with a corrected temperature-frequency equivalent conversion mechanism, a cross-scale correlation framework with clear physical significance is constructed; through collaborative optimization of microscopic activation energy and macroscopic viscoelastic parameters, the reliability of thermal power plant all-working-condition temperature domain loss factor prediction is remarkably improved; an embedded real-time calculation framework is adopted, dynamic evaluation and compensation control of the material damping performance in an engineering scene are achieved, and more accurate technical support is provided for vibration reduction structure design, vibration fault diagnosis and prevention and service life prolonging of key equipment in the fields of thermal power plants, heavy machinery and the like.

The method comprises the following steps: firstly, putting a catalyst into a reaction system, and introducing a nitrogen source and a hydrogen source; wherein the catalyst comprises a carrier and a heterojunction material loaded on the surface of the carrier; and then illuminating, heating and applying an electric field to the reaction system at the same time, so that the N = N bond or N = O bond in the reaction system is adsorbed and cracked, and the ammonia is catalytically synthesized. The heterojunction material has a metal property, a thermoelectric property and heterojunction interface double active sites, and photoproduction local oscillation photoproduction of the metal heterojunction is precisely enriched at the interface double active sites under the thermoelectric synergistic effect, so that the charge density of the interface double active sites is remarkably improved; a traditional activation mode of single nitrogen atom in a single site adsorption N = N bond or N = O bond is changed, heterojunction interface charge-rich double-site synergistic adsorption and splitting of the N = N bond or N = O bond are realized, and a nitrogen source activation energy barrier is reduced, so that the yield of synthesis ammonia is remarkably improved.

DEPCT6720 / 08 / 2567 Zirconia powder containing 2% by mol or more and 8% by mol or Less than that of the stabilizing element and 50 ppm or less of titanium (Ti) and containing Activation energies of 225 kJ / mol or more, and 300 kJ / mol or less, are provided. There is at least one zirconia powder that can produce sintered objects with high transparency. By using pressureless sintering, a method suitable for industrial production, the following can be employed: Zirconia powder production: methods for manufacturing calcined objects using zirconia powder and techniques. For the production of sintered objects using zirconia powder, the powder is desirablely manufactured by: The method involves the following steps: adjusting the pH of the raw material solution containing the source. Zirconium and its stabilized sources are at 3.5% or higher and 5.5% or lower. Heating the raw material solution to produce zirconia sol solution; mixing the zirconia solution. And alkaline solutions for co-sludge production and heat treatment of the co-sludge;

The invention relates to the technical field of silicon carbide devices, and discloses a nanowire preparation method which comprises the following steps: preparing a substrate wafer (1); coating a photoresist material layer (2) on the surface of the substrate wafer (1); a growth hole (21) is formed in the photoresist material layer (2) through a laser direct writing photoetching method; putting the substrate wafer (1) into a chemical liquid containing metal ions, and growing a metal structure in the growth hole (21) through electroplating; and removing the photoresist material layer (2) by using a chemical method or a physical firing method to form the metal nanowire (3). According to the invention, the diameter of the metal nanowires and the distance between the metal nanowires can be accurately controlled, and the distribution of the metal nanowires can be arbitrarily designed; the surface area of a metal pad of the chip can be greatly increased, and the surface activation energy is improved, so that the temperature required by the chip in the subsequent welding process is greatly reduced, and meanwhile, the welding strength of chip packaging is greatly improved.

The invention provides a method for extracting NBIT activation energy from a single PMOSFET (P-channel Metal Oxide Semiconductor Field Effect Transistor), which comprises the following steps of: respectively applying NBIT stress under constant voltage to the PMOSFET at different temperatures according to a stress time sequence, monitoring a change dynamic state of a transfer characteristic curve-along with the time sequence at different temperatures, respectively threshold voltage from the transfer characteristic curve-, obtaining a delta degradation dynamic state in a temperature rise process, and extracting the NBIT activation energy from the single PMOSFET. The stress time for generating the delta degradation dynamic state at other temperatures except the initial temperature is converted into the equivalent stress time for generating the delta degradation dynamic state at the initial temperature, and the multiple equivalent stress times are added to obtain the relation of delta-accumulated equivalent stress time; the value enabling the delta-accumulated equivalent stress time to fall on the extension line of the equivalent stress time of the delta-initial temperature is calculated, and a single PMOSFET is used for testing, so that the influence of the consistency difference among a plurality of devices on the activation energy can be avoided, and the result is accurate; and meanwhile, all degradation data are obtained on a single PMOSFET sample, so that the test time is short, and the extraction efficiency of NBIT activation energy and the utilization rate of the sample are improved.

To provide a thermal pyrolysis system.SOLUTION: Systems and methods that incorporate a kinetic booster component into thermal pyrolysis systems are disclosed herein. For example, a method according to the present technology can include receiving an input flow of the hydrocarbon reactant from a supply of a hydrocarbon reactant, then modifying the input flow to generate a modified input flow. The modified input flow can have a lower activation energy than an unmodified flow and / or can include one or more catalysts for a pyrolysis reaction. The method can then include heating the modified input flow within a pyrolysis chamber of a pyrolysis reactor. The hearting process can drive a pyrolysis reaction in the modified input flow that generates solid carbon and hydrogen gas. The method can then include removing at least a portion of the solid carbon from the hydrogen gas in an output flow from the pyrolysis reactor.SELECTED DRAWING: Figure 1

According to the invention, a one-pot synthesis strategy is adopted, a polyoxometallate with high proton conductivity and a pure inorganic three-dimensional frame structure is successfully synthesized by accurately controlling the reaction temperature, the pH value and the proportion of raw materials, and the chemical formula of the polyoxometallate is [H2N (CH3) 2] 8K3Na2H4 [Se4W35Ce2O124 (H2O) 4] Cl. 22H2O; based on the structural characteristics, the proton conductivity is further systematically tested under different temperature and humidity conditions; then, Arrhenius fitting is performed on experimental data, and activation energy of proton migration is calculated, so that a proton conduction mechanism is deeply discussed; the polyoxometallate prepared by the invention is of a pure inorganic three-dimensional frame structure, is completely composed of metal-oxygen bonds, and has important structural innovation significance; in addition, the polyoxometallate has the advantages of high proton conductivity, simple preparation process, good chemical stability and the like, so that the polyoxometallate becomes a solid proton conduction material with great application potential.

The application provides a method for extracting NBTI activation energy from a single PMOSFET, wherein NBTI stress under a constant voltage is applied to the PMOSFET at different temperatures according to a stress time sequence, a transfer characteristic curve is monitored, a dynamic change of the transfer characteristic curve with time at different temperatures is monitored, a threshold voltage is obtained from the transfer characteristic curve, a delta degradation dynamic in a temperature rising process is obtained, stress time for generating the delta degradation dynamic at temperatures other than an initial temperature is converted into equivalent stress time for generating the delta degradation dynamic at the initial temperature, a plurality of equivalent stress times are added to obtain a relationship of delta cumulative equivalent stress time, a value is calculated to make the delta cumulative equivalent stress time fall on an extension line of the equivalent stress time at the initial temperature, the single PMOSFET test can avoid the influence of consistency difference between a plurality of devices on the activation energy, and the result is accurate; meanwhile, all degradation data are obtained on the single PMOSFET sample, the test time is short, and the extraction efficiency of the NBTI activation energy and the utilization rate of the sample are improved.

A Plasma Enhanced Anneal (PEA) includes a exposing a top surface region of a substrate to a plasma to reduce the required activation energy temperature to anneal dopants for microelectronic devices. The plasma in a PEA process bombards surfaces with ions and atoms created in the plasma which allows controllable kinetic energy and ion flux to be transferred to the top surface region of the substrate and activate dopants at temperatures as low as 300° C. The plasma energy of the ions is known to dissipate into a region only a few nanometers in depth with energy densities large enough to activate dopants. PEA processing may be a promising method for dopant activation at temperatures lower than thermal techniques alone. PEA processing may also result in reduced thermal budget necessary for form silicides, anneal silicides, and anneal high-k dielectric materials.

The present invention discloses a bimetallic nitride catalyst and its preparation method and application. The catalyst uses Ni, Co, and N as catalyst components, and its surface is densely covered with nanoflowers with a diameter of about 3-5 μm. The nanoflowers are stacked on each other, with a lateral size of hundreds of nanometers and a thickness of 2-10 nm. Its preparation method is a one-step hydrothermal and tubular furnace calcination to obtain NiCoN. A method for preparing a MgH2-based hydrogen storage material based on NiCoN is disclosed: under argon conditions, NiCoN is mixed with MgH2 and then subjected to forward and reverse ball milling. The obtained NiCoN-based MgH2-based hydrogen storage material is used as a hydrogen storage material. The NiCoN doping amount is 6wt%, the initial dehydrogenation temperature is 160-175°C; the dehydrogenation amount is 4.5-5.0wt% at 285°C; the hydrogen absorption amount is 2.5-2.9wt% at 75°C; the retention rate after 10 cycles is 96-98%; and the activation energy of the dehydrogenation reaction is reduced to 56.5kJ / mol.

The application relates to the technical field of carbon material processing, and particularly discloses graphene and a preparation method thereof, the preparation method comprising the following steps: performing first heating treatment on a carbon source material under a first temperature; applying a first electric field to the carbon source material subjected to the first heating treatment to obtain an intermediate product; performing second heating treatment on the intermediate product under a second temperature; applying a second electric field to the intermediate product subjected to the second heating treatment to obtain graphene; wherein the first temperature is not lower than 800 DEG C, the second temperature is not higher than 3000 DEG C and higher than the first temperature; the intensity of the first electric field is not lower than 500 N / C, and the intensity of the second electric field is not higher than 20000 N / C and higher than the intensity of the first electric field. The aforementioned preparation method has the characteristics of wide raw material sources, can effectively reduce the dependence on fossil-based carbon sources, and can obtain graphene with few defects, high crystallinity and excellent electric conductivity under a relatively low activation energy.

This disclosure discloses a method for predicting the environmental transformation performance of pollutants, comprising: obtaining a first target reactivity parameter of a target pollutant and a second target reactivity parameter of a target environmental medium, wherein the first target reactivity parameter includes at least one of the following: a first ionization potential, a first affinity potential, molecular hardness, and molecular softness; the second target reactivity parameter includes: redox potential; inputting the first target reactivity parameter and the second target reactivity parameter into a pre-trained activation energy prediction model, and outputting a target reaction activation energy, wherein the target reaction activation energy characterizes the reaction activation energy of the transformation of the target pollutant on the surface of the target environmental medium; and predicting the transformation performance of the target pollutant on the target environmental medium based on the target reaction activation energy.

The invention discloses a silicate glass fast ion conductor material and a preparation method thereof, the chemical component of the silicate glass fast ion conductor material is AnBmSieOkMyXq, A is a carrier and comprises one or more of Li, Na, K, Ag and Cu; b is a doping ion in a silicate glass structure and comprises one or more of P, B, Al, Zn, Ca, Y, In, Zr, Hf, La, Ce, Ti, Sb, Bi, C, Ge, Sn, Pb and Ga; m is one or more of Ta, Ti, Zr, Hf, V, Nb, Y, In and Ga; x is one or more of F, Cl, Br, I, O, S and N; n, m, e, k, y and q are all integers, 0 < n < = 6, 0 < = m < = 3, 1 < = e < = 6, 4 < = k < = 16, 0 < = y < = 2, and 0 < = q < = 4. According to the invention, the network polymerization degree and the softening point of the material are obviously reduced, the Young modulus is regulated and controlled, an ion migration channel is expanded, the activation energy is reduced, and the quick charge requirement of a solid-state battery is met.

The application relates to the technical field of metallurgical process control, in particular to a method for predicting the viscosity of smelting slag of oxidized-copper sulfide concentrate and application thereof. Based on the mass of specific raw material components in the slag of the to-be-detected oxidized-copper sulfide concentrate after oxygen-enriched top-blown smelting, the reference viscosity value of the slag is calculated by combining the pre-set smelting temperature, the pre-factor and the viscous activation energy; then the volume fraction of Fe3O4 obtained after oxidation is calculated according to the mass of the specific raw material components of iron; the predicted viscosity value of the slag is calculated by substituting the volume fraction of Fe3O4 and the reference viscosity value into an expression, which provides a basis for subsequent regulation and control of the smelting process based on the predicted viscosity value; and the problem of how to predict the viscosity of the slag of the oxidized-copper sulfide concentrate to optimize the smelting process is solved.

The invention relates to an RE-Mg-Ni-based hydrogen storage alloy containing double rare earth elements and a preparation method of the RE-Mg-Ni-based hydrogen storage alloy, belongs to the technical field of solid hydrogen storage alloy materials, and solves at least one of the problems that an existing Mg-based hydrogen storage alloy hydride is high in hydrogen desorption activation energy, slow in hydrogen absorption and desorption dynamics and low in hydrogen storage capacity. The chemical formula of the hydrogen storage alloy is Mg96-xLa4-yYyNix, x is greater than or equal to 2 and less than or equal to 6, and y is greater than or equal to 1 and less than or equal to 3; the grain size of the hydrogen storage alloy is 0.81-1.69 [mu] m, and the volume fraction of a precipitated phase is 20-40%. The elements La, Ni and Y are adopted to replace the element Mg, the grain size is refined, the crystal defect of alloy particles is improved, the phase structure is improved, the hydrogen desorption enthalpy change and the hydrogen absorption and desorption temperature are reduced, and the hydrogen absorption and desorption rate is increased; the alloy ingot is subjected to rapid quenching and recrystallization annealing treatment, so that the alloy grain structure is further refined, precipitation and uniform distribution of a phase state are promoted, more channels and nucleation sites are provided for hydrogen atoms to enter the alloy, the hydrogen absorption and desorption rate is increased, and the alloy hydride activation energy is further reduced.

The application provides an evaluation method of lead and bismuth corrosion-resistant material, and relates to the field of lead and bismuth corrosion-resistant material, which comprises the following steps: calculating the root mean square displacement and diffusion activation energy of each element in the sample material in liquid lead and bismuth alloy, and screening each element of the sample material based on preset conditions; calculating the density and distribution characteristics of each element of the sample material at the solid-liquid interface, evaluating the compactness of the oxide film based on the root mean square displacement and diffusion activation energy of the screened qualified elements, obtaining the structure of the oxide film according to the distribution characteristics, and obtaining the corrosion resistance of the oxide film based on the compactness of the oxide film; and calculating the depth and quantity of lead and bismuth alloy atoms invading the sample material, obtaining the difference of the lead and bismuth corrosion resistance of the sample material without the oxide film, and determining the composition and content of the lead and bismuth corrosion-resistant material based on the corrosion resistance of the oxide film. The application can screen the material composition with strong lead and bismuth corrosion resistance in a short time, and has the advantages of short time, low cost, high safety and wide screening range.

The invention discloses a method for calculating explosion pressure load of charge with a shell based on chemical reaction of detonation products, which comprises the following steps of: obtaining detonation energy, detonation products generated by detonation and mass fraction of each detonation product, and determining further chemical reaction in the post-combustion process of the explosive and pre-exponential factors and activation energy of each detonation product; the explosion process is divided into a detonation stage, an adiabatic expansion stage and a post-combustion reaction stage; calculating the initial temperature and the initial pressure of an air mass generated by explosive detonation; constructing a finite element three-dimensional model of a detonation product air mass generated by the shell charge explosion in the closed space, and calculating related parameters of a detonation product at the end of the adiabatic expansion stage; and solving a time-history curve of the shell charging explosion pressure load in the post-combustion reaction stage. The method has the beneficial effects that the limiting effect of the shell on the chemical reaction of the explosive detonation product is introduced, the pressure load of the charge explosion with the shell is calculated, the analysis process does not depend on the specific test calibration working condition, and the universality is high.

The present invention discloses a method for testing the high-temperature activation energy of a damping material under the action of an electric current and a method for predicting the creep mechanism. The high-temperature activation energy testing method comprises: making a target damping material into a test sample of preset size specifications; mounting and fixing the test sample on a damping material test platform; using the damping material test platform to perform a damping test on the test sample under the action of an electric current to obtain the damping value of the test sample that changes with temperature at a certain current density and excitation frequency; and calculating the high-temperature activation energy of the damping material at a certain current density based on the damping value obtained from the test using a pre-constructed high-temperature activation energy calculation model for the damping material. The present invention can quantitatively describe the high-temperature activation energy of the damping material at a certain current density, temperature, and excitation frequency, and quickly predict the creep mechanism of the damping material under the action of an electric current at a certain current density. Therefore, the proposal of the present invention has certain scientific and engineering significance.

The invention discloses a perovskite anode catalyst layer material and a preparation method thereof, and belongs to the technical field of ceramic fuel cells. The perovskite anode catalyst layer material is prepared by adopting a plasma-assisted ball milling method, the molecular formula of the perovskite anode catalyst layer material is Sr < 2-x > Fe < 1.5-y > Ru < y > Mo < 0.5 > O < 6-delta >, x is equal to 0.05-0.10, y is equal to 0.05-0.15, and delta is equal to 0.10-0.35. A-site defect and B-site doping are designed on the basis of Sr2Fe1. 5Mo0. 5O6-delta perovskite, and performance breakthrough of the direct ammonia proton ceramic fuel cell at medium and low temperatures is achieved through the synergistic effect. Under the synergistic effect of argon plasma and mechanical force, nano-scale crushing and atomic-scale uniform mixing of raw materials are achieved, a large number of defects and active sites are generated on the surface of powder, subsequent solid-phase reaction activation energy is remarkably reduced, volatilization loss of ruthenium and molybdenum elements at high temperature is inhibited, and stoichiometric accuracy and structural uniformity of a final product are guaranteed.

The invention belongs to the technical field of copper-aluminum bimetal composite plate manufacturing. The method comprises the following steps: determining the mean square displacement of the copper ions at the current moment according to the temperature, the diffusion coefficient, the activation energy, the molar gas constant and the time dependence constant at the current moment; determining a copper ion mean square displacement curve at different moments according to the copper ion mean square displacement at different moments, and further obtaining a change rule of the copper ion mean square displacement; according to the method, the mean square displacement change curve of the fast diffusion of the copper ions is quantified, and the accurate prediction of the change rule of the mean square displacement of the copper ions is realized.