38 results about "Diffusion reaction" patented technology

The invention discloses a Cu and secondary aluminum cast-rolling solid-liquid composite material and a preparation method thereof, and relates to the field of metal recycling, the Cu and secondary aluminum cast-rolling solid-liquid composite material comprises a Cu layer and a secondary aluminum layer, and the Cu layer and the secondary aluminum layer form metallurgical bonding at an interface through a cast-rolling process; a diffusion bonding layer with components changing in a gradient manner exists at the interface, the thickness of the diffusion bonding layer is 5-50 microns, and a continuous or discontinuous intermetallic compound layer is generated in the diffusion bonding layer; according to the Cu and secondary aluminum cast-rolling solid-liquid composite material and the preparation method thereof, through a pre-oxidation-cast-rolling composite technology, a compact Cu2O film is prepared on the surface of Cu in advance, and a controllable reduction-diffusion reaction occurs when the compact Cu2O film makes contact with a secondary aluminum melt; according to the process, an interface barrier is removed, and newly-generated active Cu atoms and Al atoms form a diffusion bonding layer with components changing in a gradient mode under rapid cooling and pressure of a casting roller.

The invention discloses a brazing method for an in-situ synthesis titanium-rich phase reinforced ceramic / metal joint. According to the method, the controllable in-situ reaction is realized in the ceramic-metal joint by designing the multi-element alloy brazing filler metal containing the Ti active element and matching with the gradient temperature control brazing process. The method specifically comprises the following steps: preparing multi-element alloy foil brazing filler metal containing 0.1-10wt.% of Ti; carrying out surface pretreatment on the connection surface; vacuum brazing is carried out by adopting two-section type heating and three-section type controlled cooling; and a titanium-rich reinforcement phase of 0.1-5 microns is generated in situ in the welding seam through a Ti element diffusion reaction. The method effectively solves the key technical problems that the mechanical strength of a ceramic / metal heterogeneous joint is reduced due to insufficient weld joint strength and concentrated accumulation of residual stress of the joint, and the like, and is particularly suitable for reliable connection requirements of precise components in the fields of aerospace, energy equipment and the like.

This invention relates to the field of metal matrix composite material preparation technology, and discloses a method for preparing a bundled vanadium carbide reinforced steel matrix composite material, comprising: immersing vanadium wire in a pretreatment chemical isolation liquid and drying it to form a precursor solid film on the surface; fabricating a preform from the vanadium wire with the solid film on the surface using a three-dimensional orthogonal weaving process; placing the preform in a vacuum sintering furnace and heating it to complete solid-phase pre-alloying; fixing the preform in a mold and preheating it under a protective atmosphere; melting a high-carbon steel matrix material until it is completely liquefied, injecting it into the mold to immerse the preform, and cooling it to obtain a composite preform block; subjecting the composite preform block to in-situ reaction diffusion heat treatment to obtain the composite material. This invention prevents the thermal loss of vanadium wire during liquid casting and, through in-situ diffusion reaction, allows the generated vanadium carbide to inherit the initial weaving morphology, achieving a three-dimensional bundled uniform distribution of the reinforcing phase within the steel matrix.

The invention relates to a preparation method and application of a Turing-shaped high-entropy alloy catalyst under an interlayer confinement range, and belongs to the technical field of catalyst preparation and electro-catalysis. According to the method, materials are ingeniously taken, commercialized crystalline flake graphite which is low in cost and resistant to acid and alkali corrosion is particularly selected to be combined with aniline to assist metal salt cation coordination, and simple mixing and sufficient intercalation are conducted firstly. And finally, performing in-situ pyrolysis on the metal salt ions confined between the carbon layers through low-temperature heat treatment, and promoting the formation of a Turing structure pattern with uniform size and uniform distribution by virtue of a confinement diffusion-reaction mechanism, so as to successfully obtain the Turing-shaped high-entropy alloy catalyst. In a performance test, the catalyst shows excellent three-function electro-catalysis HER / ORR / OER activity and stability under an alkaline medium. Furthermore, an oxygen electricity-hydrogen electricity sustainable energy system based on self-driving of the metal-air battery is constructed by virtue of the excellent multifunctional catalytic performance of the catalyst.

This invention discloses a method, system, equipment, and medium for controlling pollutant concentration in wastewater pipe networks, relating to the field of drainage system technology. The method includes: obtaining the mass flushing rate of pollutants under pipe scouring; collecting the amount of components generated by chemical reactions within the pipe; constructing a pollutant reaction model; and, based on convection diffusion, obtaining the concentration changes of sediments following wastewater, constructing a convection diffusion reaction model. The mass flushing rate, pollutant reaction model, and convection diffusion reaction model are coupled to obtain a pollutant concentration prediction coupling model. The pollutant concentration in the wastewater pipe network is predicted based on the pollutant concentration prediction coupling model, and the pollutant concentration is divided into multiple levels. Different flushing methods are selected within different levels to control the pollutant concentration in the wastewater pipe network. This invention can adopt different methods according to different actual scenarios, thereby controlling the pollutant concentration within a reasonable range.

The invention discloses a zero-dimensional inorganic metal halide luminescent material as well as a preparation method and application thereof, and belongs to the technical field of photoluminescent materials. The chemical formula of the material is K3SbCl6, the crystal structure of the material is composed of isolated [SbCl6] 3-octahedron and K < + > ions, and typical 0D structural characteristics are shown; k3SbCl6 can emit bright yellow fluorescence under the excitation of ultraviolet light, and shows excellent optical properties, including a remarkable broadband emission characteristic and an ultra-high photoluminescence quantum yield close to 100%. The material is synthesized by adopting a room-temperature solid-state interface diffusion method, a potassium-containing compound and an antimony-containing compound are in close contact under a room-temperature condition, and efficient synthesis of K3SbCl6 can be realized by utilizing an interface diffusion reaction between the potassium-containing compound and the antimony-containing compound; the method does not need harsh synthesis conditions such as high temperature and high pressure, significantly reduces the process complexity and energy consumption, and has good industrial application prospects.

A method for coating high-aspect-ratio (HAR) and high-surface-area (HSA) substrates via atomic layer deposition (ALD) wherein the temperature of the substrate is varied cyclically during the ALD process. An exemplary temperature schedule for each ALD cycle includes at least one predetermined lower temperature during a diffusion / reaction stage of the cycle, where the lower temperature prevents decomposition of the ALD precursors and further prevents other side reactions, and further includes at least one predetermined higher temperature during a purge stage of the cycle, where the higher temperature enables rapid purging of excess precursor and / or byproducts produced during the reaction stage of the cycle. The prevention of side reactions ensures that the ALD coating is uniform and has the desired composition with minimal impurities, and the rapid purging ensures reasonable total process time.

This invention discloses a method, device, system, and storage medium for predicting the thermo-oxidative aging performance of polyamide, including: acquiring experimental data of polyamide thermo-oxidative aging under various coupled conditions such as oxygen pressure, temperature, and sample thickness, and the corresponding tensile strength retention rate; constructing a modified response prediction closed-form formula based on the diffusion-reaction synergistic mechanism and introducing it as a soft physics constraint into the model; employing a multi-objective joint training strategy to simultaneously minimize data fitting error and physical equation residuals; evaluating and visualizing the performance of the trained model, solving for and outputting the model parameters. Using the technical solution of this invention, PINN driven by the reaction-diffusion synergistic closed-form formula is used to predict the thermo-oxidative aging performance of polyamide under multiple coupled conditions.

The application provides a method for boron diffusion of monocrystalline silicon, which comprises the following steps: pretreating monocrystalline silicon, growing a boron-affinity thin film layer on the monocrystalline silicon to obtain monocrystalline silicon with a boron-affinity thin film layer on the surface; reacting the monocrystalline silicon with the boron-affinity thin film layer on the surface in the presence of oxygen and a boron source to obtain a B2O3 thin film layer covering the boron-affinity thin film layer; performing a first boron diffusion reaction on the monocrystalline silicon with the two thin film layers under an oxygen-free condition, cooling, removing the film, performing a second boron diffusion reaction in the presence of oxygen, and then performing a boron removal reaction on the monocrystalline silicon in the presence of nitrogen and hydrogen to obtain boron-diffused monocrystalline silicon. The boron-affinity thin film layer and hydrogen-assisted propulsion technology are used to realize deep PN junction and high boron diffusion effect of sheet resistance under the condition that the temperature is not higher than 940 DEG C, the damage of high temperature to the silicon wafer body is effectively avoided, the conversion efficiency of the solar cell is improved, and convenience is provided for subsequent production of solar cells with complex structures.

To provide a clad structure and battery terminal component that easily ensure bonding strength between aluminum and copper materials without requiring a diffusion reaction suppression layer composed of Ni, and which offers long-term reliability even for battery applications such as in automobiles.SOLUTION: A clad structure has a first shaft portion including a first shaft outer surface extending downward and a first shaft bottom surface at the downwardly extending end, and a flange portion having a flange top surface and a flange bottom surface extending radially from the upper end of the first shaft portion and perpendicular to the first shaft portion. A clad structure has a first surface made of an aluminum alloy material extends from the flange outer surface to the flange upper surface, and a second surface made of a copper material extends from the flange outer surface to the flange lower surface. An aluminum material containing 99 mass% or more of Al is present between the aluminum alloy material and the copper material. A battery terminal component uses the clad structure.SELECTED DRAWING: Figure 1

According to the copper-tungsten carbide electric contact material and the preparation method thereof, a nano titanium carbide transition layer capable of forming strong metallurgical bonding with WC and Cu is generated on the surface of tungsten carbide particles in situ through a collaborative process of ball milling coating and reduction diffusion reaction. According to the gradient interface structure, loads can be efficiently transmitted, WC particles are effectively prevented from being peeled off from a base body under electric arc impact, the electric arc ablation resistance of the material is improved by 70% or above compared with a traditional CuWC material, and the service life of a contact is greatly prolonged.

Method for producing a coated electrode wire for use in electrical discharge machining, comprising: Providing a central wire having a first diameter and formed from a first copper-containing metal, Hot-dip coating of the central wire for a desired time and at a desired temperature through a melt bath containing a second metal having an evaporation temperature lower than that of the first metal, wherein an alloy layer is formed on the central wire by means of a diffusion reaction between the first metal and the second metal, which has greater hardness and lower elongation than the first metal and the second metal, and wherein a coating layer is formed on the alloy layer, and Drawing the central wire, which has the alloy layer and the coating layer, so that a coated electrode wire with a second diameter is formed, whereby cracks are formed during the drawing step due to the high hardness and low elongation in the alloy layer and in the coating layer, characterized in that the resulting alloy layer and the resulting coating layer are porous with a sponge-like structure.

The invention discloses a one-way circulation Raman device which comprises a mobile phase bottle, two six-way valves, a current carrying unit, an input end, a Raman detection pool, a waste liquid bottle and a Raman detection unit, and the Raman detection pool comprises a liquid or solid Raman enhanced substrate. The one-way circulating Raman device can form a flow path in various states, when the flow path is in a circulating detection state, a sample can circularly flow in a pipeline system along with continuously and circularly flowing carrier current and passes through a detection pool area for multiple times, so that the mixing or reaction process of the sample can be more quickly completed, and the detection efficiency is improved. The one-way cyclic Raman device is simple in structure, easy to operate, low in cost and convenient to popularize, signals generated by a sample in different time dimensions and diffusion / reaction processes can be obtained, multi-dimensional information can be obtained, detection universality and accuracy are improved by means of the information, and the one-way cyclic Raman device is simple in structure, easy to operate, low in cost and convenient to popularize.

The application provides a surface treatment method of a fuel cell bipolar plate, comprising the following steps: providing a bipolar plate to be treated, and placing the bipolar plate in a closed chamber; vacuumizing the chamber; filling the chamber with a diffusion gas, wherein the diffusion gas comprises nitrogen, and at least one of unsaturated organic gas and oxygen; heating the bipolar plate to a preset temperature of a gas diffusion reaction, and keeping the preset temperature for a preset time, so as to form a diffusion reaction layer extending inward from the surface of the bipolar plate in the bipolar plate. The application can effectively improve the corrosion resistance of the bipolar plate. The application also provides a bipolar plate treated by the above surface treatment method and a fuel cell comprising the bipolar plate.

This invention provides a nano-low-iridium high-entropy oxide, its preparation method, and its application, which have the following advantages: (1) Preparation method: A high diffusion reaction environment is constructed, and the formation of high-entropy metal oxides at low temperature is achieved through kinetic acceleration, avoiding high-temperature sintering and facilitating the generation of two-dimensional nanostructures; (2) Two-dimensional high-entropy structure: The two-dimensional nanostructure fully exposes the active sites, and the high configurational entropy improves the intrinsic activity and dispersion of iridium and ruthenium sites, reducing the amount of iridium used while maintaining high activity; the high-entropy effect and delayed diffusion effect inhibit element segregation and improve stability. (3) Catalytic application: The nano-low-iridium high-entropy oxide can achieve a dual improvement in activity and stability in processes such as oxygen evolution reaction, urea oxidation, and biomass oxidation.

The invention discloses a same metal welding method, and relates to the technical field of welding, and the same metal welding method comprises the following steps: selecting a welding flux, selecting a copper-tin welding flux based on a melting point and a welding area, forming an eutectic through copper and tin, and pretreating an oxygen-free copper workpiece to be welded, the method comprises the steps that abrasive paper one-way polishing, absolute ethyl alcohol ultrasonic cleaning and drying treatment are sequentially conducted, base metal is formed, the welding face of the base metal is evenly coated with copper-tin solder, brazing is conducted on the base metal, hydrogen and nitrogen generated through ammonia decomposition serve as a reducing atmosphere and a protective atmosphere respectively, and through cooperative regulation and control over temperature, pressure and time, the copper-tin solder is obtained. And performing diffusion reaction on tin in the copper-tin solder and the base material to form a copper-tin intermetallic compound bonding layer. The copper-tin solder is combined with brazing, base metal does not need to be melted, energy loss caused by high heat conduction of oxygen-free copper is prevented, effective combination can be achieved without multiple times of bottoming, the welding efficiency and the welding quality are improved, and the welding quality of the medium-thickness plate is excellent.

The invention discloses a polyamide thermo-oxidative aging performance prediction method, device and system and a storage medium. The polyamide thermo-oxidative aging performance prediction method comprises the following steps: acquiring polyamide thermo-oxidative aging experiment data and corresponding tensile strength retention rates under coupling conditions of different oxygen pressures, temperatures, sample thicknesses and the like; constructing a correction response prediction closed formula based on a diffusion-reaction synergistic mechanism, and introducing the correction response prediction closed formula into the model as a soft physical constraint; a multi-target joint training strategy is adopted, and meanwhile, a data fitting error and a physical equation residual error are minimized; and performing performance evaluation and visualization on the trained model, and solving and outputting model parameters. By adopting the technical scheme of the invention, the thermo-oxidative aging performance of polyamide is predicted under the multi-coupling condition based on the PINN driven by the reaction-diffusion synergistic closed formula.

The application provides an electrolyte and a battery comprising the electrolyte, wherein a first additive in the electrolyte is a pyridine silane compound, the pyridine silane compound can generate a stable interface film at a positive electrode, and the cycle performance of the battery is significantly improved. On the other hand, the silane group in the first additive can participate in film formation to generate a CEI film rich in inorganic components at a thermal shock temperature, and the thermal stability of the positive electrode interface can be improved; meanwhile, the pyridine ring is a weak base substance, can react with a Lewis acid at a high temperature, inhibit the diffusion reaction of combustion process free radicals, improve the flame retardancy, and the pyridine structure can be polymerized at a short circuit point at the thermal shock temperature, and the thermal shock performance of the battery is further improved.

The application discloses a zinc layer peeling control method based on galvanizing liquid alloy element proportioning, which firstly calculates diffusion and reaction parameters of alloy elements through a multi-component diffusion reaction coupling model based on CALPHAD, and constructs a diffusion reaction phase diagram; simulates atomic motion through a molecular dynamics-evolutionary neural network analysis algorithm, extracts key characteristic parameters, and establishes a mapping relationship between the key characteristic parameters and the bonding performance of a zinc layer; then collects real-time process parameters through a SIMATIC PCS 7 system of Siemens, integrates multidimensional data through a MES for Metals platform, analyzes parameter correlation and identifies a main influence range, and generates an alloy element proportioning adjustment scheme; finally, the scheme is converted into a control instruction through the SIMATIC PCS 7 system of Siemens, and dynamic regulation and control are realized. The method solves the problem of data disconnection, improves regulation and control accuracy and stability, reduces the probability of zinc layer peeling, and improves product quality consistency.

The application relates to the material field, in particular to a FeCoCr film, a preparation method and application thereof, the FeCoCr film comprises a multilayer structure, the multilayer structure comprises a substrate layer and a FeCoCr layer, and a Pt layer arranged between the substrate layer and the FeCoCr layer; after the Pt layer is introduced, a diffusion reaction occurs between the Pt layer and the FeCoCr layer, thereby generating an L10-FePt phase in the film, forming a new hard magnetic phase, and the coercivity of the FeCoCr film is greatly improved; meanwhile, the Pt element effectively promotes the alpha phase amplitude decomposition in the FeCoCr film into a strong magnetic phase and a Cr-rich non-magnetic phase, the Cr-rich non-magnetic phase plays a role of pinning magnetic domains in the film, and the coercivity of the material is further greatly improved; through the synergistic effect of the two mechanisms, the coercivity of the FeCoCr film is greatly improved, therefore, code disc material prepared by using the FeCoCr film has higher performance, and the code disc signal has higher stability and anti-interference ability after being written.

Method for manufacturing a component by means of hot isostatic pressing, comprising the steps: • Coating a surface (7) of a workpiece (2) with at least one first reactant and one second reactant, • Forming a container (8) for hot isostatic pressing on the surface (7) of the workpiece (2) without melting or powder metallurgical processes of the first and second reactants by means of a solid-state diffusion reaction between the first reactant and the second reactant, wherein a temperature is applied for the solid-state diffusion reaction which is below the melting temperature of the first and the second reactants, wherein the container (8) formed by the solid-state diffusion reaction of the first reactant and the second reactant has a melting temperature which is higher than the temperature during hot isostatic pressing and • hot isostatic pressing of the workpiece (2), wherein either the first reactant is aluminium and the second reactant is iron or the first reactant is copper and the second reactant is nickel.

The invention discloses a zinc layer shedding control method based on a zinc plating liquid alloy element ratio, and the method comprises the steps: firstly calculating diffusion and reaction parameters of alloy elements through a CALPHAD-based multi-component diffusion reaction coupling model, and constructing a diffusion reaction phase diagram; atomic motion is simulated through a molecular dynamics-evolutionary neural network analysis algorithm, key feature parameters are extracted, and a mapping relation between the key feature parameters and the zinc layer bonding performance is established; a Siemens SIMATIC PCS 7 system is used for collecting real-time process parameters, an MES for Metaals platform is used for integrating multi-dimensional data, parameter relevance is analyzed, a main influence range is identified, and an alloy element proportion adjustment scheme is generated; finally, the scheme is converted into a control instruction through a Siemens SIMATIC PCS 7 system, and dynamic regulation and control are achieved. According to the method, the problem of data disjunction is solved, the regulation and control accuracy and stability are improved, the zinc layer falling probability is reduced, and the product quality consistency is improved.

The invention discloses a multi-scale coupling modeling method for an adiabatic axial fixed bed reactor, and relates to the field of chemical process modeling and reaction engineering.The modeling method comprises the following steps that S1, a three-level basic structure unit is constructed; s2, establishing a physical-chemical coupling calculation model; s3, embedding wide modulus parameter dynamic adaptation logic; s4, acquiring micro-scale reaction kinetic parameters, mesoscale transfer characteristic parameters and macro-scale equivalent performance parameters; s5, establishing a diffusion-reaction coupling equation of a single catalyst particle, and obtaining a comprehensive reaction-transfer parameter of the particle size; s6, establishing a macroscopic coupling model, describing a flow process in the reactor, and realizing cross-scale real-time coupling calculation of flow-diffusion-reaction-heat transfer; and S7, based on a cross-scale real-time coupling calculation result, extracting target performance parameters of the whole reactor. According to the method, the prediction precision of the model is improved, reactor hotspot control and safety production are effectively served, and the stability of industrial production is guaranteed.

A separator for a fuel cell includes a reaction region, a pair of manifold regions on opposite sides of the reaction region and through which a plurality of manifolds pass, configured to introduce or discharge reaction gas or coolant, and a pair of diffusion regions between the reaction region and the manifold regions, configured to diffuse a flow of the reaction gas or coolant. Diffusion ribs in the diffusion regions are spaced apart from each other along the manifolds. The diffusion ribs may be spaced apart such that diffusion flow fields formed between the diffusion ribs have different cross-sectional areas for respective regions at ends adjacent to the manifold regions.

The application discloses in-situ synthesized layered Fe-Fe3Al composite material and a preparation method thereof, and belongs to the technical field of layered products composed of metals. The method comprises the following steps: (1) pretreatment, (2) room temperature rolling, (3) wrapping and compacting, and (4) high-temperature hot rolling. Based on the characteristics of Fe-Al diffusion reaction, the in-situ synthesized Fe-Fe3Al layered structure composite material has simple process, can realize industrial scale production, and does not need to prepare the material through the liquid solidification method, so that various metallographic defects in the solidification process are avoided. The application further provides a layered Fe-Fe3Al composite material. The non-uniform layered structure material can effectively realize spatial homogenization of local deformation when the material is stressed, so that coordination between two phases is realized when the material is deformed, and good strength and toughness are achieved.

The invention relates to a sintered neodymium-iron-boron magnet diffusion reaction system and method. According to the technical scheme, the device comprises a diffusion furnace bin and further comprises a plurality of material boxes installed on a bearing plate of a driving mechanism, a plurality of neodymium-iron-boron blanks are borne in the material boxes, a separation assembly is movably installed between every two adjacent neodymium-iron-boron blanks and used for separating every two adjacent neodymium-iron-boron blanks, and the neodymium-iron-boron blanks are arranged in the material boxes. And after the material box is installed, the material box is separated from the neodymium-iron-boron green body. According to the method, all positions of the neodymium-iron-boron green body can be in full contact with the heavy rare earth permeation source, and the problem that the coercive force and the residual magnetism performance of the magnetic element are improved unevenly due to the fact that the spacer material may hinder effective diffusion of heavy rare earth elements to the side surface of the magnetic element is solved.

The application belongs to the technical field of optical fiber materials, and particularly relates to a preparation method of a PMN-PT ferroelectric crystal core glass cladding composite optical fiber. The application pre-increases the PMN-PT concentration in the cladding glass, that is, PMN-PT crystals are pre-filled in the cladding glass, diffusion reaction is carried out under certain high-temperature conditions, ions in the PMN-PT crystals are pre-diffused into the inner hole of the cladding glass, the concentration gradient between the PMN-PT ferroelectric crystal core and the cladding glass is reduced, the further diffusion of the fiber core crystal to the cladding glass can be effectively inhibited, and the diffusion loss of the fiber core is correspondingly reduced. The pre-diffusion layer is combined with the cladding glass closely, the pre-diffusion layer can isolate the fiber core and the cladding glass, inhibit the diffusion reaction from occurring in the subsequent heat drawing and single crystallization process, protect the material form and functional integrity of the fiber core, ensure that the material composition of the fiber core is unchanged, and make the composite optical fiber maintain the original function.

This invention relates to the field of nuclear reactor technology, specifically to a method and apparatus for predicting boron migration distribution within an oxide corrosion product deposit layer in a pressurized water reactor. The method includes: obtaining the total heat flux density of the outer surface of the oxide corrosion product deposit layer; determining the outer surface temperature of the oxide corrosion product deposit layer based on the distribution principle of the total heat flux density to convective and boiling heat transfer; determining the growth rate of the oxide corrosion product deposit layer and updating its thickness based on the outer surface temperature; determining the temperature distribution within the oxide corrosion product deposit layer according to the outer surface temperature, thickness, and energy conservation equation; and obtaining the boron migration distribution within the oxide corrosion product deposit layer based on the convective-diffusion reaction transport equation and temperature distribution related to boron. This invention enables the prediction of boron migration changes during the growth of an oxide corrosion product deposit layer.

The invention provides a preparation method of a titanium-based silicide. The preparation method comprises the following steps: providing a substrate of which the surface material is silicon; then carrying out surface melting treatment on the surface of the substrate so as to convert silicon on the surface of the substrate into molten silicon, and cooling to obtain pre-activated silicon with a metastable-state surface; and sequentially depositing titanium and titanium nitride on the surface of the pre-activated silicon to form a metal laminated layer containing the titanium and the titanium nitride, and then carrying out heat treatment so as to enable the interface of the titanium and the pre-activated silicon to generate solid diffusion reaction and directly form the titanium-based silicide with the crystal form of C54 phase. The invention further provides an application of the titanium-based silicide.

This invention relates to the field of phototherapy technology, and more particularly to a method and system for intelligent adjustment and monitoring of phototherapy dose. An initial dose plan is generated based on the initial physiological state information of the skin area to be treated. The area is divided into multiple spatial sub-regions, and baseline tolerance thresholds and conduction coefficients are recorded. The response intensity of each sub-region is monitored in parallel. The cross-influence between adjacent sub-regions is calculated using a diffusion-response coupling equation. A cumulative matrix of cross-influence is constructed and superimposed on the baseline tolerance threshold to obtain the predicted tolerance threshold and remaining tolerance margin. While maintaining a constant overall cumulative energy density, the differentiated light intensity adjustment amount is calculated based on the remaining tolerance margin and then executed. This achieves intelligent and personalized phototherapy dose adjustment, improving treatment safety and effectiveness.