58results about How to "Reduce thermal effects" patented technology

The present invention relates to the technical field of optical fiber devices, and proposes a hollow-core fiber power combiner, including an optical fiber bundle and a hollow-core optical fiber, wherein the optical fiber bundle is formed by taper-forming n solid-core optical fibers; the input end of the optical fiber bundle is the large end of the optical fiber bundle, and the output end of the optical fiber bundle is the small end of the optical fiber bundle, wherein one of the n solid-core optical fibers in the optical fiber bundle is located at the center as the central optical fiber, and the remaining n-1 optical fibers are distributed around the center optical fiber; the hollow-core optical fiber is a nested anti-resonant hollow-core optical fiber, which includes an outer cladding, a nested ring and a hollow-core region from the inside to the outside, and n-1 nested rings are distributed around the periphery of the hollow-core region; the laser of the input optical fiber bundle is input into the hollow-core optical fiber through the small end of the optical fiber bundle, and the long-distance transmission of the laser is realized by using the hollow-core optical fiber. The present invention has a simple and compact structure, high coupling efficiency, can better maintain the purity of the beam mode, and has great application value and potential advantages for high-power long-distance transmission of optical fiber lasers.

A glass and metal laser welding method using a double-layer structure solder and its solder, the method includes: surface pretreatment, ultrasonic cleaning of the metal and glass surfaces, using pulsed laser deposition technology to sequentially deposit nano-Si and Al double-layer thin film pre-solder in the area to be welded on the glass surface; assembly, assembling the glass and metal according to the requirements of the connection joint, placing the glass solder with the pre-solder downward on the metal, and clamping the two with a clamp; nanosecond laser welding, focusing the laser on the contact surface of the thin film solder and the glass, and keeping the focus on the same plane, turning on the laser to scan and weld on the focal plane; post-welding treatment, using high-frequency nanosecond laser for post-welding heat treatment, and naturally cooling the joint after treatment. The present invention can accurately control the thermal effect generated in the tiny welding area, improve the wettability between the glass and metal interface, inhibit interface brittle compounds, and reduce thermal stress and residual stress.

The invention discloses a device and a method for manufacturing a laser three-dimensional body with a complex structure, and solves the problems of low processing precision and low processing efficiency of the existing femtosecond laser processing technology. The light beam position presetting unit, the dispersion compensation unit, the acousto-optic modulation unit, the optical relay compensation unit and the microscopic focusing unit are sequentially arranged on a light path where the processing laser is located in the emitting direction of the processing laser. The light beam position presetting unit is used for adjusting the optical axis space position of the processing laser; the dispersion compensation unit is used for performing dispersion compensation on the processing laser after the optical axis spatial position adjustment; the acousto-optic modulation unit is used for dividing the processing laser subjected to dispersion compensation into a plurality of sub-beams through amplitude modulation of electric signals with different and / or the same frequency, and adjusting the spatial position of each sub-beam; the optical relay compensation unit is used for adjusting the optical path of each sub-beam; and the microscopic focusing unit is used for focusing the sub-beams after the optical path adjustment.

The invention provides a smooth wire coaxial laser cladding method for a valve sealing surface, which is characterized in that a wire for smooth wire coaxial laser cladding, which has the diameter of 1.2-1.6 mm and is suitable for valve substrates made of carbon steel and stainless steel, is obtained through a bending-powder feeding-rolling sealing-diameter reducing process on the basis of optimal design of chemical components of a powder core wire. Afterwards, annular light spots are used for conducting preheating treatment on the powder core wire before laser cladding, meanwhile, double annular light spots with independently-adjustable middle core power / ring core power are adopted for conducting coaxial laser cladding forming on the powder core wire, the single-layer cladding thickness reaches 2-4.5 mm, the splashing phenomenon is eliminated, and the stability of a molten pool is improved; and high-quality and high-efficiency surface hardening treatment of the sealing surface of the valve is realized.

The invention relates to the field of semiconductor packaging, and provides a semiconductor packaging structure and a forming method thereof, and the method comprises the steps: providing a glass substrate which is provided with a plurality of discrete glass through hole interconnection structures; an inorganic dielectric layer and a first interconnection structure located in the inorganic dielectric layer are formed on the upper surface of a glass substrate through the BEOL technology in the front-end manufacturing process of a semiconductor, and the density of the formed first interconnection structure is larger than that of a second interconnection structure formed on the lower surface of the glass substrate subsequently. The feature size of the first interconnection structure is smaller than that of a subsequently formed second interconnection structure; forming an organic passivation layer and a second interconnection structure located in the organic passivation layer on the lower surface of the glass substrate by adopting an RDL process in a semiconductor back-end process; and mounting at least one first semiconductor chip on the upper surface of the inorganic dielectric layer. The method improves the wiring density of the first interconnection structure on the upper surface of the glass substrate.

The invention discloses a resin plug hole detection machine with a reinspection function, a detection method and a detection system, and the machine comprises a workbench which is used for fixing a circuit board; the light detection module comprises a lamp panel, a polaroid and a camera, the lamp panel is provided with a white light source and an ultraviolet light source, and the polaroid can receive light reflected by the circuit board and emit light to the camera; the ultraviolet light source and the white light source are respectively matched with the camera to detect and recheck the circuit board; the first driving assembly drives the light detection module to move; the heat dissipation module is used for dissipating heat of the workbench; the cleaning module is used for scraping dirt on the end face of the workbench; the control system integrating the modules comprises an image display screen for displaying the camera. An ultraviolet light source is used for detecting the quality of the plug hole, a white light source is used for reinspection, and high-precision and high-efficiency detection of the resin plug hole of the circuit board is realized in combination with vacuum adsorption fixation, heat dissipation and cleaning of the workbench and an intelligent image analysis technology.

The invention provides a transcranial light adjusting method and system based on a laser light source and transmitting energy through an optical fiber bundle, relates to the technical field of physiotherapy, and mainly comprises a power supply, a controller, a laser, an optical fiber coupler, the optical fiber bundle, a lens group and the like. The optical fiber coupler couples laser output by the laser into the incident end of the optical fiber bundle; the emergent end of the optical fiber bundle is set as one or more sub optical fiber bundles, and the tail end of each sub optical fiber bundle is selectively butted with one lens group; when the emergent end of the optical fiber bundle is provided with a plurality of sub optical fiber bundles, the plurality of sub optical fiber bundles are respectively and correspondingly arranged at the back of the prefrontal lobe, the belly of the prefrontal lobe, the temporal lobe, the apical lobe and other physiotherapy positions which are effective for light; and when the tail ends of the plurality of sub-optical fiber bundles are not butted with the lens group, the emergent end of each sub-optical fiber bundle is set as an optical fiber array, and the optical fiber array is embedded into the light supply effective head position and is in contact with the scalp, so that the absorption rate and the reflectivity of the hair to near-infrared light are reduced.

The invention discloses a method for improving optical storage performance by superposing and rewriting a Type X structure based on femtosecond laser direct writing, and belongs to the technical field of optical storage, and the method comprises the steps: 1, determining a processing parameter window of the Type X structure; 2, determining a seed pulse parameter and a write-in pulse parameter; 3, random data writing and reading are carried out; according to the method, the storage points are superposed and rewritten by utilizing the erasable rewriting characteristic of the Type X, so that the limitation of optical diffraction limit can be bypassed, the storage capacity of the femtosecond laser permanent optical storage technology is improved by at least one order of magnitude, the number of pulses required by each storage point can be reduced, and the data writing speed is improved.

The invention relates to a preparation method of an interskeletal fitting type stretchable knee pressure testing gasket, and belongs to the field of biomechanical measurement. According to the knee pressure testing gasket, the unique paper-cut conformal design is adopted, and the shape and the notch are specially designed, so that the gasket can be flexibly stretched during installation and perfectly fit the bone contour of a patient. By means of the design, the measurement precision and reliability are greatly improved, and guarantee is provided for the success rate of an operation. The method for designing the knee pressure measuring gasket in the operation through the paper-cut (Kirgami) conformal technology is an innovative method, and the fitness and flexibility of the gasket can be improved. According to the paper-cut technology, a structure capable of being unfolded and bent is formed through precise cutting in materials, and therefore the materials can better adapt to complex shapes. And finally, preparing the interosseous fitting type stretchable knee pressure testing gasket by combining paper-cut design with femtosecond laser-induced carbonization processing.

The invention discloses a method for designing a long-distance laser battery assembly array for space, which comprises the following steps of: arranging an annular laser battery array on a plane where a hybrid laser battery array is located, and filling laser battery monomers with different sizes in the annular laser battery array to complete the layout of the hybrid laser battery array; a substrate used for pasting the hybrid laser battery array is designed, the substrate comprises a heat dissipation substrate and a PCB substrate which are oppositely connected, and the heat dissipation substrate is provided with an air-cooled or water-cooled heat dissipation structure; according to the designed hybrid laser battery array layout, trace point punching sites are arranged on a heat dissipation substrate and a PCB substrate, circuit series-parallel connection design is conducted on the back face of the PCB substrate, and a battery electrode lead penetrates through the back face of the substrate to be welded; selecting a protective cover plate and pasting the protective cover plate on the front surface of the laser battery monomer; and then the laser battery monomers are attached to the heat dissipation substrate. Through the series-parallel connection optimization design of the laser battery assembly, the series-parallel connection loss is reduced, the heat accumulation of the assembly is reduced, and the efficiency of laser energy compensation is improved.

The invention relates to the technical field of molecular interaction analysis, in particular to a method for analyzing intermolecular interaction, which comprises the following steps of: adopting a rare earth material with ligand molecules modified on the surface as an up-conversion material, contacting the up-conversion material with target molecules in a solution system, and irradiating the solution system by using exciting light matched with the rare earth material to obtain the intermolecular interaction. The intensity of the emitted light is changed by continuously changing the intensity of the exciting light actually received by the up-conversion material in the dynamic process of continuously combining and dissociating target molecules with ligand molecules of the up-conversion material, and a molecular interaction dynamic constant can be calculated by recording a change curve of the intensity of the emitted light along with time. According to the present invention, the BLI technology has the binding rate constant (Kon), the dissociation rate constant (Koff), the affinity (KD) and the like, and the technical problems of low precision of the existing BLI technology, expensive SPR technology and the like are solved. Based on the principle, the invention also develops a series of experimental consumables, kits, sensors and analysis devices for molecular interaction analysis.

A narrow-pulse-width multi-wavelength laser based on LED pumping comprises a reflecting mirror, a first LED pumping module, an optical rotation crystal, a second LED pumping module, an acousto-optic Q-switched crystal and an output mirror which are sequentially connected in series. The LED pumping module comprises a laser rod located in the center, a glass sleeve is arranged on the periphery of the laser rod in the length direction, a supporting frame is arranged on the periphery of the glass sleeve, a plurality of sets of water-cooling copper blocks are evenly arranged on the supporting frame, and an LED stacking array is arranged on the side, close to the glass sleeve, of each set of water-cooling copper blocks. Each LED stacking array comprises an LED light bar and a PCB (Printed Circuit Board) for fixing the LED light bar, and the PCB is connected with the water-cooling copper block; cooling water circulation modules are arranged at the two ends of the laser rod in the length direction respectively, and water through holes are formed in the cooling water circulation modules and the water cooling copper blocks respectively. A laser resonant cavity system of the laser takes an LED as a pumping source, combines an acousto-optic Q-switching technology, and simultaneously realizes compression of laser pulse width and multi-wavelength output.

The invention relates to the technical field of optical fiber devices, and provides a hollow-core optical fiber power beam combiner, which comprises an optical fiber bundle and a hollow-core optical fiber, and is characterized in that the optical fiber bundle is formed by tapering and bunching n solid-core optical fibers; the input end of the optical fiber bundle is an optical fiber bundle large-head end, the output end of the optical fiber bundle is an optical fiber bundle small-head end, one of n solid optical fibers in the optical fiber bundle is located in the center and serves as a central optical fiber, and the rest n-1 optical fibers are distributed around the central optical fiber in a center surrounding mode; the hollow-core optical fiber is a nested anti-resonance hollow-core optical fiber and sequentially comprises an outer cladding layer, nested rings and a hollow-core area from inside to outside, and n-1 nested rings are distributed around the periphery of the hollow-core area; laser of the input optical fiber bundle is input into the hollow-core optical fiber through the small end of the optical fiber bundle, and long-distance transmission of the laser is achieved through the hollow-core optical fiber. The device is simple and compact in structure and high in coupling efficiency, can well maintain the mode purity of the light beam, and has great application value and potential advantages for high-power long-distance transmission of the fiber laser.

The present invention discloses a porous composite foil, including a porous composite foil current collector; the porous composite foil current collector includes a polymer insulating layer and two metal conductive layers; the upper and lower sides of the polymer insulating layer are respectively covered with a layer of the metal conductive layer; a plurality of through holes are penetrated through the porous composite foil current collector; the outer side surface of each metal conductive layer in the porous composite foil current collector is respectively coated with a layer of mixed primer. The present invention also provides a positive electrode plate, a negative electrode plate and a semi-solid lithium ion battery and a preparation method. In view of the problem of large internal resistance of the original composite foil, the present invention introduces a mixed primer containing a conductive agent and an inorganic oxide solid electrolyte with good electronic conduction and ion conduction on the surface of the porous composite foil, thereby improving the bonding adhesion between the active material and the current collector, constructing a complete ion and electron transmission channel, reducing the internal resistance of the battery, and improving the rate performance.

The utility model provides a three-wavelength high-energy laser. A light source, a green stone crystal rod and a YAG crystal rod are arranged in the light gathering cavity, and the green stone crystal rod and the Nd: YAG crystal rod are arranged on the two sides of the light source; the focus lens is arranged on a light path on one side of light emitted by the green stone crystal rod; the bonding crystal can be selectively arranged on an emergent light path of the focus lens according to the emergent light requirement; the first beam splitter is matched with the second reflector to reflect light to the Nd: YAG crystal rod; an optical shutter between the first beam splitter and the second reflector is selected to be opened or closed according to the light emitting requirement; and selecting whether to arrange the frequency doubling crystal on the light emitting side of the Nd: YAG crystal rod according to the light emitting requirement.

The invention discloses a low-cost all-vertical gallium nitride Schottky barrier diode and a preparation method thereof. The diode comprises a transmission layer; the drift layer is located on the lower surface of the transmission layer; the positive electrode is located in the middle of the lower surface of the drift layer; the negative electrode is located in the middle of the transmission layer; the first dielectric layer is located on the lower surface of the remaining drift layer and the side wall and part of the lower surface of the positive electrode; the second dielectric layer is located on the upper surface of the remaining transmission layer and the side wall and part of the upper surface of the negative electrode; the positive electrode thickening layer is located on the lower surface of the first dielectric layer and the lower surfaces of the remaining negative electrodes; the conductive substrate is positioned on the lower surface of the positive electrode thickening layer; the additional positive electrode is positioned in the middle of the lower surface of the conductive substrate; the negative electrode thickening layer is located on the upper surface of a part of the second dielectric layer and the upper surface of the remaining negative electrode. According to the invention, a completely longitudinal conductive vertical device structure is realized, the forward current density of the device is improved, and the on-resistance is reduced.

The present invention discloses a method for elemental imaging of single cells using LIBS-MS combined with flow cytometry, including preparing a single cell suspension labeled with a metal isotope label antibody, delivering the single cell suspension to an erosion area by flow injection, performing high-speed scanning of the erosion area by femtosecond laser ablation, performing LIBS detection and ICP-TOF-MS detection, and comparing the detection signals with each other to form a single cell comprehensive imaging. On the other hand, the present invention discloses an analyzer combined with LIBS-MS, including a single cell sample automatic injection system, a femtosecond laser ablation atomization module, a sample pool, a fiber optic spectrometer, and an inductively coupled plasma time-of-flight mass spectrometer. The LIBS-MS combination of the present invention obtains more comprehensive elemental information and a wider content dynamic range, combining the advantages of high throughput of flow technology, high number of detection channels of mass spectrometry detection, low interference between channels, and providing in-situ information of imaging technology; at the same time, the analyzer can also detect a variety of samples such as aqueous solutions and tissue sections, and is suitable for a variety of different detection scenarios.

The application provides a 1.7-micron-band single-frequency fiber laser based on a composite glass optical fiber, which comprises a long linear cavity, and the long linear cavity comprises, in sequence, a high-reflection Bragg grating (3), a composite glass optical fiber (4), a saturable absorber (5) and a low-reflection Bragg grating (6). 3+ The composite glass optical fiber is a multimode optical fiber, has a double-clad structure, and the core is Tb 3+ The inner cladding is Tm 3+ The outer cladding is undoped rare earth composite glass. The 1.7-micron-band single-frequency fiber laser is compact in structure, high in efficiency and narrow in line width, and can be applied to the fields of gas sensing, precision measurement, laser radar and the like.

The application discloses a rotary coating dehumidification system, which comprises a rotary coating dehumidifier in a cylindrical shape, and an adiabatic plate is arranged in the rotary coating dehumidifier along the axial direction of the rotary coating dehumidifier, and the adiabatic plate divides the rotary coating dehumidifier into a dehumidification zone and a regeneration zone. The air channels of the dehumidification zone and the regeneration zone each comprise a primary flow side and a secondary flow side, the two sides of the channels are distributed in an intersecting and spaced manner, the primary flow side is coated with different desiccants in sequence, and the secondary flow side is only used as a cooling air channel in the dehumidification zone. The direction from the air inlet to the air outlet of the primary flow side of the dehumidification zone and the regeneration zone is opposite, and the air outlet and the air inlet of the secondary flow side are distributed at the front end and the rear end of the upper edge of the dehumidification zone. The application has the beneficial effects that the dehumidification performance can be enhanced by using different desiccants to realize a graded adsorption-desorption process, the heat influence of the adsorption process can be effectively eliminated by using the cooling air of the secondary flow side of the dehumidification zone, and the adsorption heat, the residual heat of regeneration and the waste heat of the exhaust gas of regeneration can be recycled and utilized.

This invention discloses an irradiation crosslinking device for the production of special cables using irradiation crosslinking technology, comprising a housing (1), an electron accelerator irradiator (2) located in the upper part of the housing (1), reflective magnet structures (3) located on both sides below the ray outlet of the electron accelerator irradiator (2) located inside the housing (1), an air outlet (4) located on the side of the electron accelerator irradiator (2) located in the upper part of the housing (1), an ozone adsorption component (6) located at the air outlet (4), and a cold air curtain structure (5) located on the wire inlet side of the housing (1), with the air outlet of the cold air curtain structure (5) forming an angle of 25-40° with the wire core axis. This invention has the characteristics of effectively improving irradiation uniformity and reducing thermal effects.

The present invention relates to the technical field related to bionic ligament medical devices, and in particular to a bionic ligament auxiliary device based on plasma and super-freezing technology, comprising a shell, an inlet is opened on one side of the upper surface of the shell, a tension sensing mechanism is fixedly installed on the inner side of the shell, an electric slide is fixedly installed on the inner side of the shell, one end of the electric slide is fixedly connected to a pressure rod, surface treatment mechanisms are fixedly installed on both sides of the inner wall of the shell, and placement racks are fixedly installed on both sides of the inner surface of the shell, a pulse power supply is placed above the placement rack, and a pulse controller is placed below the placement rack. The bionic ligament auxiliary device based on plasma and super-freezing technology achieves minimal damage to the bionic ligament and optimizes its mechanical properties through three unique and ingenious designs of a pulse plasma system, a super-freezing device, and a guide rail and a tension adjustment system.

This invention discloses a strained quantum well vertical-cavity surface-emitting laser, comprising a top reflector and a bottom reflector, with a top spacer (p-spacer) and a bottom spacer (n-spacer) between the top and bottom reflectors. A first active region and a second active region are disposed between the top and bottom spacers, and a tunneling junction is disposed between the first and second active regions. This invention employs a dual-active-region structure, designing a tunneling junction structure between the two active regions. This allows the injected carriers to undergo two optical gain cycles within the dual-active-region structure, thus multiplying the output optical power and improving the photoelectric conversion efficiency.

This invention belongs to the field of rare-earth luminescent materials and optical sensing technology, specifically disclosing an upconversion temperature probe excited by NIR-I, its preparation method, and its application. The probe includes a matrix core material, which is a fluoride crystal; and dopant ions, specifically holmium ions (Ho) doped into the matrix core material. 3+ Ho 3+ As the sole luminescent center, it is excited by a near-infrared I light source with a wavelength of 880-920 nm to generate Ho. 3+ Characteristic green upconversion luminescence and red upconversion luminescence. This invention employs the aforementioned NIR-I excited upconversion temperature probe, its preparation method, and its application, utilizing Ho... 3+ The unique energy level competition mechanism of ions enables high-sensitivity temperature measurement over a wide temperature range, and the temperature measurement signal is unaffected by fluctuations in excitation power.

The invention discloses a power connector and a power terminal assembly. The power supply connector comprises an insulation body and at least one pair of power supply terminal assemblies. In the pair of power supply terminal assemblies, each power supply terminal assembly comprises a first power supply terminal and a second power supply terminal which form an overlapped type so as to ensure that large current transmission can be carried out. A first airflow channel is formed between the first fixing plate of the first power supply terminal and the second fixing plate of the second power supply terminal, a second airflow channel is formed between the first conducting strip of the second power supply terminal and the second conducting strip of the second power supply terminal, and the second airflow channel is communicated with the first airflow channel. The power supply terminal assembly can realize optimal balance between large current transmission and low temperature rise.

The utility model relates to the technical field of power distribution networks, and discloses a structure for preventing a large-current conductor from passing through a roof to generate circulating current, which comprises an installation structure, the installation structure comprises a connecting piece and at least three installation pipes passing through the roof, the connecting piece is made of non-magnetic materials, steel bars are provided with gaps, and the connecting piece is fixed on the steel bars and communicated with the gaps. The mounting pipe is fixed to the supporting framework, and the concrete is filled on the periphery of the mounting pipe and wraps the connecting pieces, the steel bars and the mounting pipe. Non-magnetic connecting pieces are adopted to replace steel bars to be connected between the mounting pipes, electromagnetic fields around the cables are effectively isolated, the three-phase cables are prevented from forming closed loops respectively, the three-phase cables are made to be located in the same closed loop, and therefore current circulation is restrained, electromagnetic induction is reduced, and the heat effect between a split-phase bus and the steel bars is reduced; and therefore, the waterproof performance and the structural strength of the roof are prevented from being influenced by cracks of the roof caused by bursting of the concrete due to heating.

The invention relates to the technical field of semiconductor lasers, in particular to a narrow linewidth laser based on an external cavity grating waveguide and a DFB chip. The high-reflection film is arranged on the left end surface of the DFB laser chip in a plating manner; the first antireflection film is arranged on the right end surface of the DFB laser chip in a plating manner; the grating optical waveguide chip is arranged on the right side of the DFB laser chip, and the left end face of the grating optical waveguide chip abuts against the right end face of the DFB laser chip; the second antireflection film is plated on the left end surface of the grating optical waveguide chip; the third antireflection film is plated on the right end surface of the grating optical waveguide chip; the grating optical waveguide chip comprises a waveguide substrate, and the waveguide substrate is made of an insulating transparent material. The method has the following beneficial effects: 1, the filtering sufficiency and the line width compression effect are remarkable; 2, the advantages of low loss and low power consumption are outstanding; 3, mode regulation and control are flexible, and stability and tunability are both considered; and 4, the compatibility is high.

A battery pack includes a battery module and a pack case. The battery module includes a plurality of cylindrical batteries each including, at one end in a specified direction, a battery exhaust valve that opens in response to an increase in internal pressure; and a battery holder including a plurality of housing parts for the one ends of the cylindrical batteries in the specified direction to be inserted. The pack case houses the battery module and internally includes an exhaust passage for gas exhausted from at least one of the plurality of cylindrical batteries to be exhausted out of the pack case. Each of the plurality of housing parts includes a lid part facing the battery exhaust valve of a corresponding cylindrical battery. The lid part includes an opening cover part that creates a larger holder opening with a greater outside diameter than the battery exhaust valve, and the opening cover part includes a ring-shaped or incomplete ring-shaped outer periphery that is defined by a weak part with less strength than a part external to the opening cover part.

The invention discloses an actinide iron hoop body thin film material as well as a preparation method and application thereof, and belongs to the technical field of iron materials. The actinide iron ring body thin film material is a crystal thin film prepared by a spin coating method, and chemical components of the actinide iron ring body thin film material comprise cyclodextrin, actinide ions and alkali metal ions. Firstly, the actinide cyclodextrin crystal thin film is prepared on a substrate through a spin-coating method, and the thin film is good in compactness and controllable in thickness; and high-efficiency controllable reduction of the crystal film is realized through two ways of irradiation reduction or LED photoreduction, so that the iron ring body film is obtained. The actinide iron hoop body thin film material has the basic properties of iron hoop bodies, and lays an important foundation for development of iron hoop body devices.

The invention relates to a metal denudation resistance testing method which comprises the following steps: 1, preparing a metal material to be detected into a metal sample target; 2, detecting and analyzing the metal sample target by using a nano ion probe; 3, testing the three-dimensional shape of the metal sample target to obtain longitudinal depth data of the denudation pit; and 4, evaluating the denudation resistance of the metal sample according to the longitudinal depth of the target denudation pit of the metal sample. According to the method, the condition parameters of the analysis process of the nano ion probe are optimized, so that the primary ion beam can be vertically focused in the longitudinal direction of the metal sample, the problem that the metal bombardment surface is irregular due to high dispersivity of ion beam energy is avoided, and the denudation capability of different ion beams on metal can be accurately tested.

The invention relates to the technical field of coating preparation, in particular to a preparation method of a wear-resistant coating of a wind power bearing. The preparation method comprises the following steps: preheating a to-be-deposited area of the substrate by utilizing high-frequency electromagnetic induction, and performing solid deposition on the coating particles. According to the method, the interface bonding strength of the metal deposition body can be greatly improved; meanwhile, the preheating time is short, the heat influence on a base body is small, high efficiency and energy conservation are achieved, and the heat efficiency reaches 90% or above; the method is completely suitable for deposition of high-laser-reflection metal and alloy such as gold, silver, copper, aluminum and platinum. Meanwhile, compared with laser preheating, the method has the advantages that the heat influence of laser reflection on other parts of the solid deposition equipment is eliminated, and the gun blocking phenomenon caused by nozzle temperature rise is avoided; operation is easy, the failure rate is low, the production cost is greatly reduced, and resources are saved.