33 results about "In situ study" patented technology

An impact test system for collecting hail storm data comprises a vehicle, a video recorder, a container, a plurality of dynamic force sensors, an atmospheric instrument system, a mounting fixture, and a data processing system. The plurality of dynamic force sensors is capable of detecting force generated by an impact of an object. The plurality of markers is capable of being used to determine an orientation of an incoming object. The mounting fixture is capable of holding a test specimen. The data processing system is capable of collecting data from the plurality of dynamic force sensors, the atmospheric instrument system, and the video recorder.

The invention discloses an electrochemical-optical combined in-situ study spectral cell. The electrochemical-optical combined in-situ study spectral cell comprises a cell body (5), a semi-cylindrical crystal light transmission window plate (1), a sample platform (8) and a reference electrode (9), wherein a layer of active substance film with the thickness at nanometer level is coated on the bottom plane of the semi-cylindrical crystal light transmission window plate (1) to be used as the a working electrode (12); a conducting line is led from the working electrode (12); the sample platform (8) is placed at the bottom part of the cell body (5) opposite to the working electrode (12); the reference electrode (9) is fixed relative to the working electrode (12) on the sample platform (8) by a conductive adhesive; and another conducting line is led from the reference electrode (9). By adopting the electrochemical-optical combined in-situ study spectral cell, spectral signals can be prevented from being absorbed by the solution; the real electrochemical reaction can be simulated; the electrochemical-optical combined in-situ spectral cell can be used in coupling with a spectrometer; the incident ray can be continuously adjusted from a smaller angle (15 degrees); and liquid in the cell body can flow so as to be exchanged.

The invention discloses a flexible array reference electrode, and a method for in situ researches of the corrosion of a metal weld by using the electrode. The flexible array electrode is composed of a flexible substrate, an array electrode arranged on the surface of the flexible substrate, and a leading wire packaged in the flexible substrate and connected with the array electrode, the array electrode is formed by arranging Ag / AgCl micro-electrodes in an array manner, surface potentials of different micro-areas of the metal surface can be simultaneously obtained, and the flexible substrate with small modulus and flexible deformation is adopted to realize in situ and real time monitoring of the corrosion potential of abnormal complex surface of a metal weldment. The measurement method adopting the flexible array electrode as a reference electrode realizes in situ, lossless, convenient and sensitive detection of the corrosion potentials of the surface weld area, the thermal influence area and the base material area of the metal welding sample in order to observe the generation, development and extinction process of corrosion of different positions of the surface of the metal weldment, and the corrosion resistances of different welding modes in different environments are compared to realize onsite real time monitoring of the corrosion state of the metal weld in the service, so the method is especially suitable for long-term tracking monitoring of the service safety of metal weldments of automobiles, ships, engineering machines and aerospace.

The invention relates to an electrode device for in-situ research on the atmospheric corrosion process under liquid droplets, which mainly solves the problems of complex structure and high price in the prior art. The present invention adopts an electrode device for in-situ research on the atmospheric corrosion process under liquid droplets, including an operating frame, a 3D operating platform, a gas inlet, a liquid droplet, a capillary salt bridge of saturated KCl agar, a counter electrode, a silver wire, a glass tube, and silica gel , silver chloride, saturated KCl solution containing AgCl, gas outlet, working electrode, test chamber, knob for adjusting the upper and lower heights, electrochemical workstation, lead-out line, and thermostat box solve the above problems well, and can be used in the original bit to study liquid droplets under atmospheric corrosion processes.

The invention relates to the field of material surface magnetism measurement, and discloses an in-situ measurement method for sample magnetism. The in-situ measurement method adopts a measuring device, wherein the measuring device comprises a light source, an aspherical mirror I, an aspherical mirror II, a field diaphragm, a polarizer, an aspherical mirror III, a translucent reflector, an objective lens, a laser device, a sample, a sample platform, a substrate, a stepping motor, an inclined plane bench, an ejection pin, a magnet, slit diaphragms, a photoelectric detector I, a compensator, ananalyzer, an aspherical mirror IV and a photoelectric detector II. According to the in-situ measurement method, the illumination region on the sample does not need to be changed by means of the diaphragm slits, the Kerr sensitivity in different directions is measured, the mechanical instability in the experiment is reduced, incident light intensity in different directions are adjusted through adjusting the number and the duration of turned-on LED lamps, the intensity of incident light is adjusted in real time according to the acquired image quality so as to obtain an image with good resolution, and especially for some magnetic samples with complicated magnetization directions of magnetic domains, the magnetoelastic property of the sample can be studied in situ through adopting the method of applying stress to the back surface of the sample.

The invention discloses a portable in-situ multi-field coupling loading device for neutron scattering. The device comprises a stress loading and testing assembly, a temperature loading assembly and amagnetic field loading assembly, wherein the stress loading and testing assembly comprises four parallel guide rods for supporting; a first fixing plate, a force sensor, a left clamp, a right clamp, aspring moving plate, a spring set, a second fixing plate and a stress loader are sequentially mounted on each guide rod from left to right; the temperature loading assembly comprises a left heating ring and a right heating ring which are correspondingly arranged on clamp heads of the left clamp and the right clamp; the magnetic field loading assembly comprises a support which his provided with two vertical arms, and the two vertical arms are correspondingly arranged at the front and back of a guide rod set. According to the device, the stress, temperature and magnetic field multi-field coupling loading is developed and achieved for the first time, and a foundation is provided to multi-site in-situ research of magnetic material type magnetic structures in evolving micromechanisms; and thedevice is applicable to different neutron source neutron scattering spectrometers.

The invention discloses an apparatus for studying electrochemical behavior of material corrosion, and an in-situ TEM method thereof, and belongs to the research field of corrosion electrochemistry behaviors. The apparatus comprises an upper plastic shell, a lower plastic shell, a platinum sheet and an aluminium conductive wire. The upper plastic shell is provided with a hole having a diameter of 2 mm; an upper surface of the lower plastic shell is embedded with the platinum sheet; the platinum sheet is connected to one end of the aluminium conductive wire; the other end of the aluminium conductive wire extends to the outer part of the lower plastic shell; the platinum sheet is provided with a pad, a TEM sample and the upper plastic shell in sequence; and the TEM sample contacts with electrolyte out of the apparatus through the hole on the upper plastic shell. The TEM sample is encapsulated in to an electrode by using the apparatus; then test of an electrochemical curve is carried out in the electrolyte to obtain electrochemical information; and the sample after the test is observed and characterized by TEM. The method can realize in-situ study of structural evolution in an electrochemical corrosion process in small size, thereby realizing corresponding observation of the electrochemical information and the structural evolution.

The invention relates to a temperature-controllable infrared in-situ reaction pool based on high vacuum conditions from low temperature to high temperature. The device consists of two parts, one part is fixed on the main part of the infrared cavity of the infrared spectrometer, including a cubic cavity with a light entrance window and a light exit window, a steel plate for sealing the spectrometer, an air system, and a vacuum pumping system interface , cold head interface, vacuum gauge interface and three-dimensional translation stage, and the other part is a detachable cold head part that integrates sample clamping and temperature adjustment and control. The in-situ cell can achieve air intake and vacuum maintenance under high vacuum conditions, and precise control from low temperature (110K) to high temperature (above 1000K), so that the gas adsorption and reaction of powder samples and film samples under different conditions can be studied in situ and It can effectively eliminate the influence of background atmosphere.

A portable, single-phase bioreactor provides the in situ study of mesophilic and thermophilic corrosion inducing microbial biofilms on metal surfaces by oil, chemical, petrochemical, oil refining, food, metallurgical, paper fluids. The bioreactor is a batch-type for turbulent and piston-driven laminar flow, operated by cycles, with continuous circulation of the fluid. A culture medium or industrial or production fluid containing microbiota is introduced into a homogenizing container. The bioreactor includes a support section having removable corrosimetric test coupons that contact the fluid under dynamic conditions corresponding to fluid-carrying pipelines, and promote the formation of the microbial biofilm for analysis of the kinetics of microbial biofilm development. The bioreactor produces turbulence to homogenize the fluid and maintain a temperature of 20 to 80° C. for the microorganism growth. The fluid has a salinity of 2 to 200 ppm (NaCl) and a pH of 2 to 10.

The invention provides a method for preparing a carbon nano tube through electron beam induced deposition. The method comprises the following steps of: withdrawing a single semiconductor nanowire; wrapping the surface with an amorphous carbon layer by the electron beam induced deposition technology so as to form a 'core-shell structure' with the nanowire and the amorphous carbon layer; loading a bias voltage; melting the nanowire and converting the amorphous carbon into stratified polycrystal under the effect of joule heat produced by current; and moving the molten nanowire out of the nano tube, thus obtaining a single carbon nano tube. With the adoption of the method, the length, diameter, wall thickness and other parameters of the carbon nano tube can be accurately controlled, the in-situ study can be performed for the formation process of the carbon nano tube, thus sufficient data can be provided for the study on the growth mechanism of the carbon nano tube; the method avoids inclusions and catalysts, so that the obtained carbon nano tube is relatively high in purity. The method can also be popularized to prepare carbon nano tube arrays.

The invention relates to a method for modifying a gold chip in situ with cellulase. Quartz crystal microbalance (QCM) and surface plasmon resonance (SPR) technologies are important tools for real-time and in-situ research on the adsorption of biomacromolecules on solid interfaces. ) and the energy dissipation value of the adsorbed layer (corresponding to the structure of the thin film on the sensor), the latter only studying the change of "dry matter". The traditional method of studying cellulase and substrate is to immobilize the substrate on a QCM or SPR chip, and then pass cellulase as the mobile phase to study the interaction between the two. The present invention combines cellulase with a gold chip by in-situ modification method, constructs a cellulase film with a uniform surface, and broadens the application range of QCM or SPR to study the interaction between cellulase and other macromolecules in the system .

The invention provides an experimental device for an in-situ research of an ecological niche of seawater micro-plastic and an application method, and belongs to the field of marine environments. The experimental device comprises an anchoring system, a bearing system, a ballasting system and a collection system, wherein the anchoring system is connected with the bearing system; the ballasting system is connected above the bearing system; the collection system is used for collecting an obtained sample. According to the experimental device provided by the invention, experimental conditions consistent to environment parameters including natural seawater water temperature, salinity, pH (Potential of Hydrogen), nutrient salt and the like are created to carry out an in-situ experiment; the disadvantages of uncertainty and complexity of investigating and collecting materials, shapes and sizes of the micro-plastic on the scene, and difficulty in recovering a real marine environment under laboratory conditions are overcome. Meanwhile, the ballasting system in the device realizes automatic upward floating and sinking of the bearing system, and a sample is convenient to feed and collect. Furthermore, the collection system has good shipboard operation coordination performance and is rapid in collection; the application of the device provided by the invention provides important guarantees for analyzing structure characteristics of the ecological niche of the micro-plastic and correlation with environment factors.