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428results about "Material analysis using radiation diffraction" patented technology

Micron-sized speckle preparation method for quasi-in-situ OIM-DIC mesoscopic strain field analysis

A micron-sized speckle preparation method for quasi-in-situ OIM-DIC mesoscopic strain field analysis comprises the following steps: (1) polishing the surface of a sample to be detected to obtain a bright and scratch-free mirror surface; (2) preparing Si powder turbid liquid; (3) dipping speckles of a sample to be detected in the Si powder turbid liquid to obtain micron-sized speckles; and (4) observing and shooting speckle morphology, and if Si particles are uniformly distributed and dispersed, applying the Si particles to quasi-in-situ OIM-DIC mesoscopic strain field analysis. The method is simple, convenient and rapid, low in operation and construction cost, high in practicability, good in particle dispersity, high in precision, more suitable for calculation of a quasi-in-situ OIM-DIC mesoscopic strain field, controllable in preparation process, low in cost and free of damage to the surface of a sample, the definition and stability of speckle characteristics are remarkably improved, DIC mesoscopic micron-scale operation under a quasi-in-situ OIM mechanical test can be effectively achieved, and the method is suitable for large-scale industrial production. And the grain and mesoscopic strain field information is successfully coupled.
Owner:SHANDONG UNIV

Research method for vanadium enrichment mechanism in diagenetic stage of phosphorus vanadium ore

The invention belongs to the technical field of vanadium enrichment mechanisms of phosphorus vanadium ores, and discloses a research method of a vanadium enrichment mechanism in a diagenetic stage of phosphorus vanadium ores, which comprises the following steps: S1, sample collection and treatment; s2, rock ore identification and mineral composition analysis; s3, analyzing the occurrence state and microcell morphology of vanadium; s4, performing geochemical analysis on the whole rock; s5, in-situ microcell geochemical analysis is carried out; s6, phosphorus nodule analysis; s7, comprehensive analysis and mineralization model establishment; according to the method, mineralogy, total rock geochemistry, micro-area surface scanning and other multi-scale and multi-means research methods are comprehensively utilized, and the vanadium occurrence state, the ore-forming fluid evolution and the phosphorus-vanadium coupling relation are finely described; in-situ microcell geochemical analysis is introduced into phosphorus nodule analysis, the internal structure, the growth sequence and element distribution of the phosphorus nodule are directly revealed, obvious frontier and systematicness are achieved, and reliable theoretical support is provided for accurate exploration of vanadium ore resources and green and efficient dressing and smelting process research and development.
Owner:ANHUI UNIV

Evaluation method for permeability damage degree of low-permeability reservoir

The invention relates to the field of petroleum engineering, in particular to a method for evaluating the permeability damage degree of a low-permeability reservoir, which comprises the following steps of: 1) coring a target reservoir, and measuring by an experiment to obtain core mineral percentage content and rock mechanical parameters; 2) establishing a reservoir single proppant model, calculating the porosity change rate when the single proppant is embedded, and establishing a mechanical distribution function of the whole proppant and the rock wall surface according to the percentage content of the core minerals and the mechanical parameters in the step 1); and 3) converting the change of the permeability of the reservoir when the proppant just enters the stratum and is in a stable state into porosity change by combining the single-particle pore change rate and the rock mechanical distribution function, calculating a porosity change index, and evaluating the damage degree of the reservoir. According to the method disclosed by the invention, the reservoir damage and permeability reduction caused by propping agent embedding due to stress change are converted into a porosity change index, and the mine scale reservoir permeability damage degree is indirectly evaluated.
Owner:XI'AN PETROLEUM UNIVERSITY

Industrial digital X-ray imaging detection control system

The invention relates to the technical field of X-ray imaging detection, and particularly discloses an industrial digital X-ray imaging detection control system, which obtains the size misjudgment degree of a pore in a pore detection image corresponding to a high scattering superposition layer in a plurality of historical scattering detection periods, and performs correlation analysis on the size misjudgment degree and the scattering superposition degree. Whether the scattering superposition influences the pore size or not is evaluated, whether the pore size detection error is related to the scattering superposition phenomenon or not can be determined, the source of the detection error can be accurately found out, the detection sequence can be reasonably arranged, the area with the high misjudged superposition value can be preferentially processed, and if the influence is caused, the scattering control coefficient is obtained. The digital X-ray imaging is regulated and controlled according to the scattering control coefficient, the energy of a ray source can be properly increased, and parameters such as the distance or the angle between the ray source and a workpiece can be adjusted, so that scattering is reduced.
Owner:JIANGSU DIYE TESTING TECH CO LTD

Surface corrosion evaluation method for aluminum alloy plate with epoxy coating

The invention relates to the technical field of processing, testing or inspection of aircraft parts, and provides a surface corrosion evaluation method for an aluminum alloy plate with an epoxy coating, which comprises the following steps: acquiring an aluminum alloy plate sample with an epoxy coating at different time after being exposed in a coastal atmospheric environment, collecting two-dimensional closed corrosion area image data of the surface of the sample, and calculating the surface corrosion of the aluminum alloy plate with the epoxy coating according to the two-dimensional closed corrosion area image data; processing the image to extract a closed boundary of the corrosion area; calculating the boundary length of the corrosion area and the included corrosion area, and calculating the fractal dimension of the corrosion area based on the length and the area; according to the method, the correlation model between the fractal dimension of the corrosion area and the exposure corrosion time is established, the interval distribution of the fractal dimension under different corrosion time is determined, the method is used for evaluating the corrosion state and the development trend of the corrosion state, the limitation of parameter evaluation modes such as subjective judgment and single corrosion depth is avoided, and the accuracy and objectivity of a corrosion evaluation result are effectively improved.
Owner:AIR FORCE UNIV PLA

Deep high-temperature rock statistical damage constitutive model construction method

The invention relates to the technical field of oil and gas well wall stability and fracturing yield increase development, in particular to a deep high-temperature rock statistical damage constitutive model construction method which comprises the following steps: performing mineral component and microstructure analysis on a deep rock core by adopting XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscope) technologies, and performing quantitative statistics on mineral content to obtain a deep high-temperature rock statistical damage constitutive model. The method comprises the following steps: acquiring rock brittleness and plasticity characteristic basic data, performing a triaxial compression test by adopting a high-temperature triaxial compressor, and establishing a constitutive model capable of reflecting deep high-temperature rock damage; according to the mechanical characteristics of the deteriorated rock due to temperature rise, the provided model is verified to accurately simulate stress-strain curves of a sample in each stage of a single axis and a conventional three axis under different temperatures and confining pressures, the rationality of indexes is verified, and the deep high-temperature rock statistical damage constitutive model is obtained. The method solves the problem that in the prior art, a statistical damage constitutive model capable of accurately reflecting stress-strain characteristics of the deep high-temperature rock at each stage of a single axis and a conventional three axis under different temperatures and confining pressures is lacked.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Gold mineral exploration method, device and system and storage medium

The invention provides a gold mineral exploration method, device and system and a storage medium. Relates to the technical field of mineral exploration. The gold mineral exploration method comprises the following steps: acquiring a backscattered electron image of a sample to be detected, and screening bright mineral phase particles based on a preset gray threshold; performing energy spectrum analysis to obtain an actually measured energy spectrum corresponding to each bright mineral phase particle; and determining the gold-bearing minerals in the to-be-detected sample according to the actually measured energy spectrum. According to the method provided by the invention, the gold-bearing mineral is determined by analyzing the actually measured energy spectrum, and the identification accuracy and the automation efficiency of the micro-fine gold are improved; the method can effectively solve the problem of missed judgment caused by energy spectrum signal mixing and low matching degree due to fine or wrapped particles in a traditional method, so that more accurate process mineralogy data is obtained, and a reliable basis is provided for formulating an efficient dressing and smelting recovery scheme.
Owner:BEIJING MINING & METALLURGICAL TECH GRP CO LTD +1

Method for evaluating contribution of each component to resistivity of shale oil reservoir at high temperature and high pressure

A method for evaluating contribution of each component to shale oil reservoir resistivity at high temperature and high pressure is applied to the field of oil exploration and development. The method comprises the following steps: (1) analyzing the volume percentage of each clay mineral, the pore water content and the mineralization degree of the shale oil reservoir pressure-maintaining closed core; (2) when the fluid pressure is greater than 23MPa, measuring the resistivity of the pressure-maintaining closed rock core at each temperature point; (3) carrying out water balance treatment on pure clay minerals, namely kaolinite, montmorillonite, illite and chlorite, and measuring the resistivity at each temperature point when the fluid pressure is greater than 23MPa; (4) when the fluid pressure is greater than 23MPa, measuring the resistivity of each temperature point of the solution consistent with the mineralization degree of the pore water; and (5) constructing a resistivity evaluation model, and evaluating the contribution of each component to the resistivity of the shale oil reservoir under the condition of high temperature pressure.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Coal seam carbon dioxide groutability evolution whole process simulation device and method

The invention belongs to the technical field of coal bed gas exploitation and carbon dioxide geological storage, and relates to a coal bed carbon dioxide injectability evolution whole process simulation device and method, and the device comprises a true triaxial stress loading system, a temperature control system, a multi-mode gas injection system, a monitoring system, and a data processing system. The deep stratum stress state and the stratum temperature field are simulated, constant-pressure and constant-current mode carbon dioxide is injected into the true triaxial stress loading system to carry out groutability attenuation and recovery simulation, and nitrogen and pulse mode injection is switched to carry out temperature change regulation and control, phase change regulation and control and frequency change regulation and control so as to simulate groutability improvement. According to the method, a whole-process evolution mechanism of attenuation-recovery-improvement of carbon dioxide groutability is realized, meanwhile, data acquisition and permeability and stress calculation are performed through a monitoring system and a data processing system, and rapid conversion from original data to core parameters is realized; and accurate experimental data support is provided for on-site injection parameter optimization and regulation and control technology research and development.
Owner:SHIJIAZHUANG TIEDAO UNIV

Composite electronic detector, electronic detection equipment and detection method

The invention provides a combined type electronic detector, electronic detection equipment and a detection method, and belongs to the technical field of electronic microscopic imaging. The combined type electronic detector adopts a structure that yttrium aluminum garnet crystals are arranged to partially cover a split type silicon diode detector, so that physical replacement of any detection body is not needed, and the detection efficiency is improved. According to the invention, signals of different areas can be selected and read through an electronic mode, so that an optimal detection mode is called under different working conditions, detection can be realized under the condition of high acceleration voltage, detection can also be realized under the condition of low acceleration voltage, one machine with two purposes is realized, and the performance and the application range of electron beam equipment are greatly improved.
Owner:RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1

Rapid detection method for degradation performance of degradable plastic

The invention provides a rapid detection method for degradation performance of degradable plastics, and relates to the technical field of degradable plastics. The rapid detection method for the degradation performance of the degradable plastic specifically comprises the following steps: S1, establishing an auxiliary database; s2, designing rapid separation and purification; s3, using a Fourier transform infrared microscope; s4, detecting by using activated vermiculite; s5, debugging, and performing rapid separation and purification; and S6, combining the biodegradation rate and the heavy metal index. The rapid detection method for the degradation performance of the degradable plastic is very high in detection accuracy and reliability, supports a sustainable development policy and an ecological environmental protection target, and provides powerful technical support for improvement of the detection capability of enterprises in the industry.
Owner:ZHEJIANG TEXTILE TESTING & RES INST +1

Method for analyzing and determining aggregation structure in condensed state

The invention provides a method for analyzing and determining an aggregation structure in a condensed state, which comprises the following steps: step 1, measuring a same condensed state substance sample by adopting at least two structure determination means with different principles, at least another kind of structure measurement means is used for obtaining nanoscale or mesoscale aggregation structure information so as to obtain multi-source structure measurement data representing different structure hierarchies. According to the method, multi-scale structure measurement data is obtained by adopting at least two structure measurement means with different principles for the same condensed substance sample, and structure information of different scales is subjected to combined treatment in the same analysis process; and the structural characteristics of the aggregation structure on the atomic scale, the nanoscale and the mesoscale can be simultaneously included in an analysis range, so that the characterization integrity of the overall characteristics of the aggregation structure in the condensed state is improved.
Owner:JINING NORMAL UNIV

A method and system for identifying unknowns in oilfield processes

The application provides an oil field process unknown object identification method and system, which identifies and calibrates the shape information and smell information of a target unknown object; comprehensively analyzes the basic identification result of the target unknown object, separates the unknown object sample according to a matched separation method selected according to the target unknown object, and obtains an organic matter part sample and an inorganic matter part sample of the unknown object; then, the organic matter part sample and the inorganic matter part sample of the target unknown object are identified by using set identification rules, and the composition and information of the organic matter part and the inorganic matter part of the unknown object are determined; finally, the composition and information of the target unknown object are comprehensively analyzed by comprehensively analyzing the basic identification result, the composition and information of the organic matter part and the inorganic matter part of the target unknown object. The scheme can overcome the problem that the existing technology is not comprehensive in identification purposes, quickly and reliably identifies and analyzes the composition of the oil field unknown object, and accurately provides scientific guidance for the safety production of the oil field in a timely manner.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A method for early identification of component fatigue micro-damage based on nonlinear static component

The application discloses a component fatigue micro-damage early identification method based on a nonlinear static component, and particularly relates to the technical field of material nondestructive testing and structural health monitoring, which comprises the following steps: arranging an excitation probe and a receiving probe on the surface of a component to be measured; selecting an excitation frequency based on a frequency dispersion curve and generating a Hanning window modulated wave; collecting a propagation response signal; extracting a static component amplitude A and a fundamental wave amplitude A through time-frequency processing; calculating a nonlinear static parameter beta=A / A²; further calculating a first derivative S(N) and a second derivative ΔS(N) of beta with respect to a fatigue loading cycle N; and identifying a dislocation dominant stage, a dislocation saturation or rearrangement stage, a micro-crack initiation stage and a macro-crack formation stage according to the first derivative S(N) and the second derivative ΔS(N). The application can be used for early stage identification of the evolution process of component fatigue micro-damage.
Owner:EAST CHINA UNIV OF SCI & TECH

Electron beam detection electron microscope, related equipment module and electron beam scanning imaging method

The invention provides an electron beam detection electron microscope, a related equipment module and an electron beam scanning imaging method. The related equipment module comprises electron beam detection control equipment and a detection execution module. In the electron beam detection electron microscope, the electron emission module emits electron beams to a sample to be detected, and the detector module comprises a transmission detection unit and a non-transmission detection unit. The non-transmission detection unit is arranged between the electron emission module and the bearing surface of the sample bearing platform, detects non-transmission signal electrons generated when the electron beam focuses and scans the sample to be detected, and outputs non-transmission detection signals. The transmission detection unit is arranged on one side of the back side surface of the sample bearing platform and is used for detecting and collecting signal electrons of a transmission diffraction image generated by focusing transmission scanning of the sample to be detected by an electron beam and outputting a four-dimensional transmission detection signal, and the electron beam detection control equipment forms a scanning image according to a non-transmission detection signal and the four-dimensional transmission detection signal; the detection efficiency of the material characterization of the to-be-detected sample is effectively improved.
Owner:HUAWEI TECH CO LTD

Semiconductor material detection method and growth equipment calibration method

The invention relates to the technical field of optical chips, in particular to a semiconductor material detection method and a growth equipment calibration method. In the invention, the first semiconductor layer and the second semiconductor layer have bidirectional orthogonal selectivity of a corrosion solvent, and the first semiconductor layer can be used as an etching stopping layer of the second semiconductor layer; when the thickness of the second semiconductor layer is measured, different solvents can be adopted to respectively etch the first semiconductor layer and the second semiconductor layer, and the step tester is adopted to measure the thickness of each second semiconductor layer, so that the measurement result is more accurate, the thickness of the plurality of second semiconductor layers can be sequentially measured through one-time growth, the measurement is more convenient, and the measurement efficiency is improved. The test efficiency is higher; besides, a second semiconductor layer is sandwiched between the two first semiconductor layers to form a double-heterojunction structure, the second semiconductor layer between the two first semiconductor layers can obtain component information of the layer by measuring the spectrum of the layer through a PL, the component information is not influenced by the substrate, and the measurement of the component information is more accurate.
Owner:DOGAIN LASER TECH (SUZHOU) CO LTD

A method and apparatus for ultra-low dose coherent diffraction imaging

This application belongs to the field of coherent diffraction imaging technology, specifically disclosing an ultra-low dose coherent diffraction imaging method and apparatus. Based on a blind source separation strategy, this application uses principal component analysis to process the acquired diffraction signals, performing noise separation and updating in reciprocal space. This effectively separates mixed noise energy into noise components, thus avoiding crosstalk to the reconstruction process and significantly improving the convergence stability and robustness of coherent diffraction imaging when reconstructing diffraction signals with extremely low signal-to-noise ratios under ultra-low exposure doses. Simultaneously, this application constructs noise components separately for each scanning position and correlates noise components at different positions through low-dimensional spatial projection, achieving non-stationary noise separation. This enables more effective handling of random noise caused by the low quantum efficiency of ultra-short band detectors, thus maintaining extremely high noise robustness and reconstruction accuracy even under ultra-low exposure doses, achieving an effective improvement in resolution.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for synchronously detecting wall thickness and void of runner chamber

The invention provides a runner chamber wall thickness and void synchronous detection method, and relates to the technical field of hydro-power engineering nondestructive testing, S1, modular calibration: preparing a combined simulation block of a metal standard plate and an organic material plate, establishing a concrete water content inversion model and a void depth model segmented according to the thickness of a steel lining, and outputting calibration parameters; s2, field data acquisition: arranging measuring lines along a vertical welding seam and a longitudinal rib plate of the runner chamber, acquiring ultrasonic echo time and a thermal neutron counting rate, correcting the wall thickness in combination with the temperature of a steel lining, performing secondary verification on an abnormal measuring point, and outputting an original data set S = {}; and S3, machine learning signal processing: performing wavelet packet decomposition to extract energy ratio characteristics, and calculating thermal neutron counting rate fluctuation characteristics. Precise collaborative detection of the wall thickness and the void is realized through a link-by-link process of modular calibration, field data acquisition, machine learning signal processing, segmented collaborative modeling and Internet of Things data management.
Owner:CHINA YANGTZE POWER

Quantitative evaluation device and method for shale oil oxidation thermal stress permeability enhancement

This invention relates to the field of unconventional oil and gas development technology, and to a device and method for quantitatively evaluating the permeability enhancement caused by oxidative thermal stress in shale oil. The former includes a triaxial core holder housed within a constant-temperature chamber, and confining pressure injection system, oxidation medium injection system, detection medium injection system, gas collector, upstream storage tank, downstream storage tank, chromatograph, and acoustic emission sensor spaced apart outside the chamber. This application provides a dynamic multi-field coupled physical simulation system capable of simulating real formation conditions. By collecting pressure, product composition, acoustic signals, and nuclear magnetic resonance relaxation data, it utilizes a mathematical model for dynamic inversion of porosity and permeability using the pressure pulse attenuation method. It integrates acoustic emission RA-AF source identification and nuclear magnetic resonance fractal evaluation to analyze the multi-field coupling effects of thermal, flow, force, and chemical fields generated during air injection, and quantitatively evaluates the degree of improvement in shale permeability and pore structure caused by oxidative expansion.
Owner:中国石油大学(北京)克拉玛依校区

In-situ characterization electron microscope for material surface interface damage of multi-factor coupling corrosion

The application provides an electron microscope for in-situ characterization of material surface and interface damage under multi-factor coupled corrosion, relates to the technical field of in-situ detection equipment, and aims at solving the technical problem that the scanning electron microscope in the prior art cannot realize the research on the damage mechanism of the material under a specific corrosion environment in-situ. The electron microscope for in-situ characterization of material surface and interface damage under multi-factor coupled corrosion comprises an electron microscope bin, a support frame, a corrosion-resistant loading table, a laser heating device and a gas needle. The corrosion-resistant loading table clamps a sample after salt spraying and applies stress to the sample. The laser heating device and the gas needle are integrated in the electron microscope bin. The sample is heated by the laser heating device, the hot salt environment under the stress state of the service of the sample is simulated, trace reaction gas is introduced to the surface of the sample through the gas needle, the test environment is closer to the actual environment, and thus the damage mechanism of the material under a specific environment is more truly revealed, thereby laying a foundation for establishing a hot, force and electrochemical multi-field coupled corrosion damage theory and a corrosion damage evaluation model.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

A method for preparing and testing a powder diffraction standard for determining internal residual stress

This invention provides a method for preparing and testing powder diffraction standards for determining internal residual stress, belonging to the field of residual stress detection. The powder standards prepared by this invention possess shape retention capabilities, meeting the requirements of the transmission diffraction optical path in non-destructive diffraction determination of internal residual stress. The powder, after being bonded with an adhesive, forms a blocky solid form, and standards of different sizes can be prepared according to the penetration depth of different diffraction sources on different substrate materials. Furthermore, the ratio of powder to adhesive can be adjusted to obtain different diffraction volume ratios. By testing the uniformity of diffraction peak intensity distribution in translational and rotational degrees of freedom, the uniformity of the internal lattice distribution and orientation of the standard sample can be determined, thereby testing and judging the uniformity of the standard sample.
Owner:UNIV OF SCI & TECH BEIJING

Method for evaluating suitability of negative electrode active material

Disclosed herein relates to an evaluation method of a negative electrode active material for a lithium secondary battery and a negative electrode for a lithium secondary battery including a negative electrode active material determined to be suitable according to the method, wherein the evaluation method can determine the material suitability of a negative electrode active material contained in a secondary battery with high reliability by quantifying the degree of side reaction of the negative electrode active layer that may occur after activation in a non-destructive manner, and the negative electrode active material so determined has the advantage of having excellent high temperature stability and excellent life characteristics when applied to a negative electrode.
Owner:LG ENERGY SOLUTION LTD

Sample table for table type X-ray diffractometer

The invention provides a sample table for a table type X-ray diffractometer, and relates to the field of diffractometers, the sample table comprises a sample rack, a sample table structure is inserted in the sample rack, the sample rack is provided with a lifting locking part used for limiting the sample table structure, the lifting locking part comprises a first T-shaped tube mounted at the bottom of the sample rack, and the first T-shaped tube is provided with a second T-shaped tube; a second T-shaped pipe is inserted into the bottom end of the first T-shaped pipe, a second T-shaped rod is connected to the second T-shaped pipe in a penetrating mode, a first T-shaped rod is connected to the top end of the second T-shaped rod, the top of the first T-shaped rod penetrates through the sample frame and extends into the sample frame, and the top of the first T-shaped rod makes contact with the bottom of the sample table structure. According to the sample table structure, the lifting locking part is arranged, the lifting locking part can complete locking of the sample table structure in a mode of rotating after lifting, the lifting locking part can complete unlocking action by moving downwards and resetting after rotating, operation is convenient and fast, use is facilitated, and the abrasion problem of traditional screw adjustment is avoided.
Owner:EDU NANOTECHNOLOGY (SHANGHAI) CO LTD

Heating method of in-situ transmission electron microscope heating chip for simulating ignition powder combustion

The embodiment of the invention discloses a temperature rise method of an in-situ transmission electron microscope heating chip for simulating ignition powder combustion, relates to the technical field of heating chips, and can accurately simulate the temperature change in the ignition powder combustion process. The method comprises the steps that the relation between the temperature and time in the ignition powder combustion process is determined; according to the relationship between the temperature and the current in the heating process of the heating chip of the in-situ transmission electron microscope, determining the relationship between the current and the time of the heating chip in the process of simulating the combustion of the ignition powder; configuring a circuit system of the heating chip by using the relationship between the current and the time; a temperature measuring piece is arranged on the heating chip, and a circuit system of the heating chip can adjust the current of the heating chip according to the temperature measured by the temperature measuring piece. The method is suitable for an in-situ transmission electron microscope simulation ignition powder combustion scene.
Owner:UNIV OF SCI & TECH BEIJING

In-situ acetylation-co-crystallization method and application of in-situ acetylation-co-crystallization method in organic molecular structure determination

The invention discloses an in-situ acetylation-co-crystallization method and application of the in-situ acetylation-co-crystallization method in organic molecular structure determination, and the in-situ acetylation-co-crystallization method comprises the following steps: synthesizing a cyclic trinuclear silver (I) complex as a crystallization partner, and carrying out an in-situ acetylation reaction in an organic molecular sample, after the reaction is completed, adding a crystallization partner for co-crystallization; the application of the in-situ acetylation-co-crystallization method in the determination of the organic molecular structure comprises the following steps: preparing a co-crystal from an organic molecule to be detected through the in-situ acetylation-co-crystallization method, collecting crystallographic data of the co-crystal, and analyzing to obtain a crystal structure of an acetylation product of the organic molecule to be detected; and determining the chemical structure and the spatial configuration of the to-be-detected organic molecule according to the crystal structure of the to-be-detected organic molecule acetylation product. The method can be used for structure determination of a series of acetylated organic molecules such as alcohols, phenols, amines and the like.
Owner:JINAN UNIVERSITY

Laminated mold battery for in-situ transmission XRD (X-Ray Diffraction) and use method thereof

The invention discloses a lamination mold battery for in-situ transmission XRD (X-Ray Diffraction) and a use method thereof, and belongs to the technical field of lamination mold batteries. The problems that existing in-situ XRD testing methods of the laminated mold battery are all based on the reflection type principle, and the requirement for an in-situ testing pool is high are solved. The laminated mold battery comprises an A-side in-situ pool, a B-side in-situ pool, a laminated cell and an electrolyte, the laminated battery cell is clamped and fixed in a sealed cavity formed by the battery cell fixing shells of the A-side in-situ cell and the B-side in-situ cell, a negative electrode lug region and a positive electrode lug region of the laminated battery cell extend out of the sealed cavity and are respectively in contact with conducting strips on the two sides of the battery cell fixing shells, and the electrolyte is injected into the sealed cavity. The laminated mold battery is simple in design and convenient to assemble and disassemble, and richer phase structure information of the positive electrode active material and the foil, the negative electrode active material and the foil and the like under the in-situ electrochemical condition can be obtained at the same time.
Owner:NORTH CHINA UNIVERSITY OF TECHNOLOGY +1

High-speed chopper wheel scanning imaging method

The invention relates to the technical field of radiation imaging, and discloses a high-speed chopper wheel scanning imaging method, which comprises core structure configuration and imaging operation steps, and specifically comprises the following steps: core structure configuration: (a) preparing an annular chopper wheel by adopting a lead material with the density equal to or higher than that of a steel plate, four equidistant beam outlets are uniformly distributed in the peripheral direction of the chopper wheel, penetrate through the inner side and the outer side of the chopper wheel and are used for collimating X-rays; (b) an X light source is fixedly arranged in the annular central area of the chopper wheel, and a transmitting end faces a beam outlet; and (c) a detector is fixedly arranged outside the chopping wheel, and the receiving surface of the detector corresponds to the emergent direction of the beam outlet and is used for receiving X-ray energy reflected by the scanned object. According to the high-speed chopper wheel scanning imaging method, by optimizing the chopper wheel structure design and the imaging process, synchronous improvement of energy collection efficiency, imaging precision and scanning speed is achieved, the imaging algorithm is simplified, and the core pain point in the prior art is solved.
Owner:WUHAN AIWEI TECH CO LTD

Material surface and interface damage in-situ characterization system for multi-factor coupling corrosion

The invention provides a material surface and interface damage in-situ characterization system for multi-factor coupling corrosion, and relates to the technical field of in-situ detection equipment. The technical problem that in the prior art, in-situ microscopic observation cannot be conducted on a material surface interface in a simulated service environment, and the dynamic evolution rule of surface interface corrosion behaviors in the same area in the corrosion process cannot be accurately tracked is solved. According to the material surface and interface damage in-situ characterization system for multi-factor coupling corrosion, simulation of heat, salt and force multi-field coupling corrosion is achieved through a salt mist generating device, a multi-point heating module and a corrosion-resistant loading table, an X-ray diffractometer is allowed to conduct in-situ diffraction testing through an X-ray incident window and an X-ray emergent window, corrosion product in-situ phase analysis under the simulated working condition is achieved, and in-situ phase analysis of the corrosion product under the simulated working condition is achieved. And the corrosion-resistant loading table can enter the electron microscope for micro-area structure and micro-area component analysis, the multi-point heating module can keep the consistency of the sample state in the X-ray diffractometer and the electron microscope, and different heating sites can be used for heat, salt and force environment experiments.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Maintenance device for water quality and flue gas on-line monitoring equipment

The utility model discloses a maintenance device for water quality and flue gas on-line monitoring equipment, and belongs to the technical field of maintenance devices. The water quality and flue gas on-line monitoring equipment maintenance device comprises a base assembly, a leak detection assembly, a damage detection mechanism and a blowing mechanism, the leak detection assembly is used for carrying out leak detection on a gas path system of the flue gas on-line monitoring equipment, and the damage detection mechanism is used for carrying out surface and internal damage detection on an optical probe of the water quality on-line monitoring equipment. The air blowing mechanism is used for conducting blow-drying maintenance and air blowing cleaning on sampling probes of the water quality online monitoring equipment and the smoke online monitoring equipment respectively, the leak detection assembly and the air blowing mechanism are installed on the two sides of the top face of the base assembly respectively, the damage detection mechanism is arranged on the top face of the leak detection assembly, and the leak detection assembly comprises an installation box. A pair of leak detector bodies is installed in the installation box body, the damage detection mechanism comprises a pair of connecting plates and a connecting frame, and a scanning electron microscope and a transmission electron microscope are installed on the two sides of the bottom end of the connecting frame respectively.
Owner:CHENGDU KEKONG ENVIRONMENTAL ENG CO LTD