157 results about "Glow discharge" patented technology

The present invention provides: a steel sheet which contains Ni, Cu and Sn, and has excellent chemical conversion treatability; and a component which includes said steel sheet.　A steel sheet and a component including the same according to the present invention are characterized by having a chemical composition containing, in mass %, 0.010-1.000% of Ni, 0.010-1.000% of Cu, and 0.003-1.000% of Sn, and by the emission intensities of Ni, Cu, and Sn in the surface layer of the steel sheet as measured by high-frequency glow discharge optical emission spectrometry satisfying the following relationships.　Ni: Surface layer maximum intensity / Bulk intensity ≤ 1.5 Cu: Surface layer maximum intensity / Bulk intensity ≤ 1.3 Sn: Surface layer maximum intensity / Bulk intensity ≤ 15

The present invention discloses a non-thermal plasma treatment of metal powders in order to improve their processability by additive manufacturing (AM). The invention consists in bonding primary particles constituted of metals or metal alloys to a plurality of secondary particles constituted of metals, metal alloys, ceramics or polymers by the mean of a non-thermal plasma treatment. The primary particles have a larger mean diameter than the secondary. Both particles are injected through a non-thermal plasma glow discharge and / or in its afterglow region (region downstream the plasma discharge) where their surfaces are cleaned by removing contaminants and / or oxide layer and activated to react between each other. The functionalized metal powders are then collected and afterwards processed by AM leading to high quality parts. The functionalized metal powders produced by this plasma treatment improve the processability of metal by AM.

The invention provides a spark discharge device and a spark discharge accurate control method, and relates to the technical field of spark discharge. The device comprises a pair of spark electrodes, a rotary switch, a capacitor and a power supply, wherein a gap exists between working ends of the spark electrodes; the spark electrode, the rotary switch and the capacitor are connected in series to form a discharging loop, and the capacitor and the power supply are connected in series to form a charging loop; the rotary switch comprises a rotatable rotor and a toothed bar connected with the rotor; a contact is arranged in the discharge loop, and when the contact is in contact with the toothed bar, the discharge loop is conducted. According to the invention, the discharge loop is rapidly switched on and switched off through the rotary switch, various parameters of spark discharge can be accurately and stably controlled, so that the spark discharge is not influenced by the environment, such as spark breakdown voltage, discharge frequency and the like, and the spark discharge can be prevented from being converted into corona, glow or arc discharge, for example, the spark discharge can be normally generated under low air pressure.

Provided is a steel sheet comprising a base steel sheet and a chemical conversion coating disposed on the surface of the base steel sheet. The steel sheet is characterized in that: the base steel sheet has a chemical composition containing, in mass%, 0.10-1.00% of Cr; and the S-maximum emission intensity and the Cr-maximum emission intensity of the chemical conversion coating as measured by a high-frequency glow discharge emission spectrometer (GDS) satisfy the relations of 1.1≤S-maximum emission intensity / S-emission intensity of base steel sheet≤20.0, and 1.1≤Cr-maximum emission intensity / Cr-emission intensity of base steel sheet≤5.0. Also provided is a component including the steel sheet.

The invention relates to the technical field of mass spectrometers, and discloses an analytical instrument based on glow discharge and quadrupole mass spectrometry combination, which comprises an ion source, an ion transmission system and an ion separator, wherein the ion source is a glow discharge ion source; the ion separator is a quadrupole rod mass analyzer, and the quadrupole rod mass analyzer comprises four electrodes which are arranged in parallel. Compared with an existing analytical instrument, the glow discharge ion source can directly analyze a solid sample without being pretreated into a solution, and compared with an inductively coupled plasma source, the glow discharge ion source is small in matrix effect and especially suitable for high-salt and high-carbon samples; the quadrupole rod mass analyzer is simple in structure, small in size, low in cost, especially suitable for commercialized popularization and high in scanning speed.

This invention relates to the field of laser technology, and more particularly to an energy storage and discharge device for a laser and its charging and discharging method. The discharge device includes a support frame, a discharge mechanism, and an energy storage mechanism. A first insulating plate and a second insulating plate are disposed within the support frame. The first insulating plate is located at the bottom of the support frame, and the second insulating plate divides the support frame into an energy storage cavity and a discharge cavity. The discharge mechanism includes a pair of electrodes, an anode electrical connection plate, a first current-guiding plate, and a second current-guiding plate. The pair of electrodes includes an anode and a cathode. The anode is connected to the support frame and the first insulating plate via the anode electrical connection plate, and the cathode is mounted on the second insulating plate. The first current-guiding plate is symmetrically disposed on both sides of the anode, and the second current-guiding plate is symmetrically disposed on both sides of the cathode. The energy storage mechanism is connected to the cathode and is used to store electrical energy and release energy to the pair of electrodes during discharge. The advantage of this invention is that it can achieve large-volume, high-energy, uniform glow discharge without the need for pre-ionization.

A galvanized steel sheet for hot stamping in which the component composition of a base steel sheet satisfies the following conditions: 0.15-0.50% by mass of C, 0.02-2.5% by mass of Si, 0.5-5% by mass of Mn, 0.03% by mass or less (including 0% by mass) of P, 0.02% by mass or less (including 0% by mass) of S, 0.010-1% by mass of Al, 0.005-0.080% by mass of Ti, and 0.0005-0.005% by mass of B, with the remainder being Fe and unavoidable impurities, and when elemental analysis is performed from the surface of a plating layer in the thickness direction of the plating layer by glow discharge emission spectroscopy (GD-OES), the content of Si in the plating layer in the thickness direction of the plating layer is less than 1% by mass. The carbon concentration [Cf] (mass%) at a position where the Zn concentration constituting the plating layer is 1.0 mass% and the bulk carbon concentration [Cb] (mass%) satisfy formula (1): [Cf] < = 0.65 [Cb].

The invention discloses a preparation method of a low-temperature plasma plating and permeating modified layer on the surface of a metal mold. The preparation method comprises the following steps: S1, precise pretreatment of a base body: sequentially carrying out mechanical grinding and polishing and ultrasonic cleaning on the base body, and then drying and putting the base body in a vacuum chamber; s2, plasma activation: after vacuumizing, introducing mixed gas of argon and hydrogen, generating glow discharge under the action of a pulse power supply, and performing sputtering activation on the surface of the substrate; s3, gradient transition layer plasma deposition is conducted, specifically, a pulse direct-current plasma source is adopted, a Ti target and a Cr target serve as sputtering sources, and a transition layer with components changing in a gradient mode is prepared; s4, plating and permeating a multi-element synergistic functional layer: preparing the functional layer by adopting a radio frequency-pulse direct-current composite plasma source, namely a Ti target, a Cr target, a Si-Al alloy target and a rare earth element target through synergistic sputtering; and S5, post-treatment optimization: performing vacuum cooling to room temperature after low-temperature annealing treatment to obtain a final modified layer. The permeation modified layer prepared by the method has high binding force, high hardness, high wear resistance and salt spray corrosion resistance.

The present invention belongs to the field of atmospheric pressure glow discharge and relates to a low-temperature plasma processing device controlled by a transverse magnetic field. The device comprises a power supply unit, a discharge unit with a built-in high-voltage spike electrode, an annular ground electrode, and an electromagnetic coil, a gas unit, a gas control unit, a magnetostrictive unit, and a sample unit for holding a treatment liquid or collecting gaseous products processed in the discharge unit. The discharge end of the high-voltage spike electrode is a pointed tip, and the radially inner side of the annular ground electrode is prefabricated with an axially symmetrical cut angle. A magnetic core is provided on the inner surface of the outer cylinder, and the magnetic core includes a first annular magnetic core and a second annular magnetic core. The device improves the efficiency of generating high-energy active particles in the low-temperature plasma by significantly increasing the discharge area. It can either utilize the discharge process of a specific dielectric gas to generate high-energy active particles for subsequent liquid treatment, or directly mix the gas to be treated with the dielectric gas in a certain proportion in the gas unit and then complete the treatment directly in the discharge unit.

The invention discloses a method suitable for on-site analysis of the valence state of thallium in water. The method comprises the following operation steps: step 1, collecting and separating a water sample; step 2, acidizing treatment; 3, Tl (I) and Tl (III) are separated; 4, total thallium is measured; step 5, Tl (I) determination; the invention relates to the technical field of atomic spectrum metal element analysis, and the method has the beneficial effects that by combining an electrochemical separation technology with a Chelex-100 solid-phase extraction column and cooperating with a portable liquid cathode glow discharge thallium measurement instrument, high-sensitivity field detection of Tl (I) and Tl (III) is realized, the detection limit is lower than 1.0 g / L, and the repeatability is RSDlt; the analysis period of a single sample is less than or equal to 30 minutes, the weight of equipment is only 5kg, battery power supply is supported, and acidification-separation-detection integrated operation can be completed outdoors without professional laboratory conditions.

The utility model discloses a plasma variable capacitance type boosting device, and relates to the technical field of electrical elements. The utility model aims to solve the problems that the conventional coil mutual inductance type boosting structure needs a large amount of copper materials, a high-quality mutual inductance magnetic core and a relatively complicated driving circuit, and meanwhile, a large amount of electromagnetic radiation exists and the conversion efficiency is low. The capacitor comprises a first conductive electrode, a second conductive electrode, a first dielectric medium, a second dielectric medium and gas, the capacitor formed by connecting the first dielectric medium, the gas and the second dielectric medium in series is integrally formed, and the first conductive electrode and the second conductive electrode are two electrodes of the capacitor. According to the utility model, the series capacitance value can reach a uF level or higher during gas glow discharge, the series capacitance value is smaller than the capacitance value of gas in a gas insulation state, the large-proportion change of the capacitance value is realized, the large-amplitude boosting effect is further realized, and the high-voltage boosting capacitor has the advantages of copper material saving, light weight, simple structure, low cost, energy conservation and environmental protection.

The invention discloses a magnetron sputtering winding coating machine, and belongs to the technical field of magnetron sputtering coating. The magnetron sputtering winding coating machine comprises: a vacuum system forming a vacuum chamber; the winding system is mounted in the vacuum chamber and is used for conveying the flexible base material; the magnetron sputtering device is installed in the vacuum cavity and comprises a plurality of magnetron sputtering assemblies, each magnetron sputtering assembly comprises a target material and a magnetic pole, glow discharge areas of the multiple magnetron sputtering assemblies of the same magnetron sputtering device at least partially coincide, and the arrangement directions of the multiple magnetron sputtering assemblies of the same magnetron sputtering device are relatively inclined. The central axes of all the magnetron sputtering assemblies of the same magnetron sputtering device intersect in the overlapped area of the glow discharge area. The multiple magnetron sputtering assemblies of the same magnetron sputtering device are obliquely arranged, and the glow discharge areas of the magnetron sputtering assemblies at least partially coincide, so that the production efficiency of sputter coating can be improved, and damage of sputtering particles to a deposited film layer is reduced.

The invention relates to a high-nitrogen stainless steel spectrum standard sample and a preparation method thereof. The preparation method comprises the following steps: a) smelting in a vacuum furnace, alloying and casting; b) forging the cast ingot to obtain a round ingot; c) processing the round ingot to obtain blocky samples, marking numbers on the blocky samples, and grouping the blocky samples; d) selecting more than 20 block-shaped samples from each group of block-shaped samples, carrying out homogeneity test by adopting direct reading spectrometry or glow spectrometry, and carrying out homogeneity statistics on each element according to a variance analysis method; and e) carrying out constant value analysis on the characteristic value, and taking the block sample with the element characteristic value meeting the requirement as a spectrum standard sample. The prepared spectrum standard sample can be used as a series of standard samples with known components for a direct-reading spectrometer, a glow spectrometer, a glow mass spectrometer and an X-ray fluorescence spectrometer; the method effectively solves the problem of rapid and accurate component detection of the high-nitrogen stainless steel, and has very important application value.

The utility model provides a preparation device of an ultrathin sheet sample for a glow discharge mass spectrometer. The preparation device comprises an external dustproof box and an internal sample preparation system, the dustproof box comprises an air port, an air outlet with a silencer, a dustproof box side door, a side door lock catch, an internal sample preparation system and a tool table; in the internal sample preparation system, fixed seats and a lower fixed mold are respectively arranged on two sides and the center of a bottom plate, and the upper ends of the fixed seats on two sides are connected with a guide rail; the two sliding plates drive the upper die to move downwards, so that the sample and the indium sheet are compressed; the center of the lower end of the upper die moving sliding plate is sequentially connected with an upper die pressing spring, an upper die and a pressing head. Tension springs, pressing claws and pressing wheels are sequentially arranged on the two sides of the center of the lower end of the upper die moving sliding plate. The lower ends of the air inlet pipes are connected with a manual control valve to drive the two sliding plates to move. The device has the advantages that the ultrathin sheet sample for the glow discharge mass spectrometer can be prepared, and the device is simple to operate and not easy to pollute. The sample center can be accurately positioned, and subsequent accurate testing is facilitated.

The invention discloses an intelligent multi-channel glow discharge device, which is characterized in that a positive electrode discharge unit and a negative electrode discharge unit have high integration degree and high safety degree through a multi-layer integrated design, and the distance between electrodes can be accurately regulated and controlled through an accurate electrode position detection and control unit. The flow of each channel and the size of liquid drops can be in an optimal state through independent monitoring and independent control of fluid of multiple channels, and the whole glow discharge process is efficient, intelligent, accurate, safe and controllable through an innovative multi-channel cooperative feedback control technology, an intelligent self-adaptive adjustment algorithm and an integrated safety protection system in the aspect of control. The method is particularly suitable for the fields of catalyst preparation and the like, and can effectively reduce the risk of manual operation while remarkably improving the production and preparation efficiency and the quality consistency of the catalyst.

The invention discloses a tantalum film preparation method and system, a chip and equipment, and relates to the technical field of chips. The method comprises the following steps: connecting a tantalum target material and a substrate with two poles of a direct current source; in a vacuum environment at room temperature, the power of the direct current source is adjusted to be within a first power range, so that the first gas generates a glow discharge phenomenon, plasma generated by the first gas due to the glow discharge phenomenon bombards the tantalum target material to sputter tantalum, and the tantalum is deposited on the substrate to generate a pure alpha-phase tantalum film; wherein the temperature range of the room temperature is 20-40 DEG C, and the first gas is a non-reaction gas relative to the sputtered tantalum. According to the embodiment of the invention, the pure alpha-phase tantalum film can be directly generated on the substrate in a room temperature environment, the substrate does not need to be heated to a high temperature (such as more than 400 DEG C), and a seed layer does not need to be prepared on the substrate in advance, so that the preparation efficiency of the pure alpha-phase tantalum film is effectively improved, and the preparation cost of the pure alpha-phase tantalum film is reduced.

Provided is a plated steel sheet comprising a base steel sheet and a plating layer formed on a surface of the base steel sheet, wherein the plating layer has a predetermined chemical composition, and when measuring the plating layer by glow discharge spectroscopy (GDS), a ratio of “Al concentration at center of plating layer” / “Al concentration at position of plating layer where Fe concentration is 50% of base steel sheet” is 0.10 to 1.50.

The invention discloses a high-temperature in-situ diffuse reflection infrared device applied to low-temperature plasma, and relates to the technical field of in-situ diffuse reflection infrared measurement. The ceramic cover plate is detachably arranged at the opening of the stainless steel tank body, and a sealed high-temperature accommodating cavity is formed when the ceramic cover plate covers the opening of the stainless steel tank body; the ceramic fixing flange penetrates through a bottom plate of the stainless steel tank body and is in sealed connection with the stainless steel tank body, the top of the ceramic fixing flange is located at the position, close to the center, of the high-temperature containing cavity, and a material containing space with the diameter larger than that of a through hole in the ceramic fixing flange is formed in the top of the ceramic fixing flange; the high-voltage electrode is arranged in the ceramic fixing flange in a penetrating mode, the top of the high-voltage electrode extends into the material containing space, and the top end of the high-voltage electrode is lower than the top of the ceramic fixing flange. The beneficial effects are that the central high-voltage electrode and the annular electrode are cooperatively designed, the central high-voltage electrode is used as a discharge electrode, and the glow-like discharge phenomenon is generated between the central high-voltage electrode and the annular electrode, so that a uniform discharge area is formed.

The invention provides a preparation method of a structural component, the structural component and electronic equipment, and the preparation method of the structural component comprises the steps that a coating chamber, a target material and a base material are provided, and the base material comprises an outer surface; the target material and the base material are placed in a coating chamber, and working gas is introduced into the coating chamber; positive voltage is applied to the target material, the working gas generates arc discharge, and the material of the target material is deposited on the outer surface of the base material; negative voltage is applied to the target material, the working gas generates glow discharge, and the material of the target material is deposited on the outer surface of the base material; and alternately performing the step of applying the positive voltage to the target material and the step of applying the negative voltage to the target material so as to form a metal texture layer on the outer surface. According to the preparation method of the structural part, the surface of the base material can be covered with the target material in a deposition mode, the metal texture layer can be made to be uniform and very thin, and the problem of local paint accumulation is avoided while it is guaranteed that the structural part has the good metal imitation effect.

A detachable cover plate is arranged at the top of a reaction cavity, and a vacuum air exhaust assembly is arranged at the bottom of the inner side of the reaction cavity; the two groups of cathode gas uniformizing assemblies are symmetrically arranged on the two sides of the bottom of the cover plate, and the electrode input ends of the cathode gas uniformizing assemblies penetrate through the cover plate to be connected to a radio frequency power supply outside the reaction cavity; the anode carrier is in insulation lap joint with the two sets of cathode gas uniformizing assemblies, and the anode carrier is located between the two sets of cathode gas uniformizing assemblies to form a glow discharge area. A battery piece to be coated is stacked in the anode carrier, and the cutting edges on the two sides of the battery piece face the two sets of cathode gas uniformizing assemblies respectively and are located in the glow discharge area; the gas conveying assembly penetrates through the cover plate and is connected with the cathode gas uniformizing assembly so that process gas can be conveyed into the reaction cavity. The device has the characteristics of compact structure, convenience in operation, high reliability and the like, and the production efficiency of battery pieces is remarkably improved.

The application discloses a low-temperature ion nitriding method and application. The low-temperature ion nitriding method comprises the following steps: under a selected temperature condition, ion etching treatment is performed on the surface of a workpiece by adopting an arc-enhanced glow discharge process, and then plasma nitriding treatment is performed on the workpiece by adopting an arc-enhanced plasma process to obtain a nitriding workpiece; wherein, a positive and negative alternating voltage is applied to the workpiece in the arc-enhanced plasma process. The low-temperature ion nitriding method provided by the application can realize nitriding at a lower temperature, effectively improves the deformation degree of the workpiece, and is widely applicable to surface strengthening of cutters, molds and metal parts.

Provided are: a steel sheet having excellent tensile strength and improved bendability after plastic working; and a method for producing the steel sheet. A steel sheet according to the present invention has a tensile strength of 1180 MPa or more, has a prescribed chemical composition and steel structure, and has, in a surface layer part of the steel sheet, the luminous intensities B30, B140, and B150 of B at depth positions of 30 [mu] m, 140 [mu] m, and 150 [mu] m from the surface of the steel sheet when measured in the depth direction from the surface of the steel sheet by high-frequency glow discharge luminescence analysis satisfy B30 / B150lt, and the luminous intensities B30, B140, and B150 of B at depth positions of 30 [mu] m, 140 [mu] m, and 150 [mu] m from the surface of the steel sheet when measured in the depth direction from the surface of the steel sheet. B140 / B150 is greater than or equal to 0.90 and less than or equal to 1.10.

This invention provides a steel sheet with excellent resistance to resistance welding cracking in welded parts. The galvanized steel sheet comprises: a Si-containing cold-rolled steel sheet containing 0.1% to 3.0% by mass of Si; and an Fe-based electroplating layer formed on at least one side of the Si-containing cold-rolled steel sheet, wherein the adhesion amount on one side is 5.0 g / m². 2 The above; a zinc plating layer, which is formed on the above-mentioned Fe-based electroplating layer; and, in the intensity distribution measured by glow discharge emission spectroscopy, (I Si，Fe ) / (I Si，bulk The average C concentration in the range of 10 μm to 20 μm from the interface between the zinc plating layer and the Fe-based electroplating layer toward the Fe-based electroplating layer is 0.10% by mass or less.

The invention provides semiconductor process equipment and an etching end point monitoring method, relates to the technical field of semiconductor processing, and aims to solve the problem that an etching end point without glow discharge is difficult to monitor. The semiconductor process equipment comprises a process cavity, a laser emission device and a laser detection device, the process cavity is provided with a first side cavity wall and a second side cavity wall which are opposite, the first side cavity wall is provided with a first observation window, the second side cavity wall is provided with a second observation window, and the first observation window and the second observation window are correspondingly arranged; the laser emitting device is arranged outside the first observation window and comprises a first laser emitter and a second laser emitter, the emitting direction of the first laser emitter is horizontal, and the direction of the second laser emitter faces the wafer; the laser detection device is arranged outside the second observation window and comprises a first detector and a second detector, the first detector is used for receiving laser emitted by the first laser emitter, and the second detector is used for receiving laser emitted by the second laser emitter and reflected by the wafer. The method can effectively monitor the etching end point without glow discharge.

Cathode based on glow discharge and hollow cathode effect belongs to the technical field of space electric propulsion electron source, and aims to solve the problems of high failure risk of heater and difficulty in working in oxygen environment of traditional hollow cathode.The cathode comprises a gas supply pipe, a negative electrode, a contact electrode and an extraction electrode; the contact electrode is sleeved outside the discharge chamber from the top end of the negative electrode, and the extraction electrode is sleeved outside the contact electrode from the top end; the bottom plate of the negative electrode is provided with an air inlet hole in the center and is communicated with the gas supply pipe; the top cover of the contact electrode is provided with a throttle hole in the center for maintaining the air pressure of the discharge chamber; the top cover of the extraction electrode is provided with an extraction hole; a discharge power source is loaded between the negative electrode and the contact electrode, which is used for carrying out glow discharge on the gas working medium entering the discharge chamber to generate plasma; the glow plasma generates hollow cathode effect in the cylindrical negative electrode; an extraction power source is loaded between the contact electrode and the extraction electrode, which is used for making electrons pass through the throttle hole and the extraction hole in sequence and spray to form electron emission.

This invention relates to a hydride generation gaseous sample introduction method and apparatus for heavy metal element determination in conjunction with a liquid cathode glow discharge-atomic emission spectrometer, belonging to the field of atomic spectroscopy metal element analysis technology. This invention uses chemically generated carbon dioxide gas as a carrier gas, which is then used as the atmosphere gas in the liquid cathode glow discharge to ionize and generate micro-plasma. The chemical hydride generation method converts the applicable analyte element into a hydride, which is then carried into the micro-plasma by the carbon dioxide carrier gas, atomized, and excited to generate an emission spectrum.

The application discloses a reactor, a system and a method for converting carbon dioxide and water by plasma, and belongs to the technical field of greenhouse gas resource utilization and plasma application. By arranging a double medium tube structure, arranging a high-voltage needle electrode in an inner medium tube, and arranging a low-voltage ring electrode at the bottom of the inner medium tube, atmospheric pressure glow discharge can be generated between the electrodes, and plasma jet can be realized. Meanwhile, a biomass carbon placement area and a catalyst placement area are arranged in the plasma jet area, and through the synergistic effect between the plasma and the catalyst, multi-stage catalysis is realized, and the selectivity of target products is improved. The plasma is driven by renewable zero-carbon electricity, CO2 and H2O are converted into synthesis gas and acetic acid through catalysis, and the conversion rate, energy efficiency and liquid product selectivity in the conversion of CO2 and H2O are improved.

The present invention provides a steel sheet having excellent resistance to resistance welding cracking at welded portions. An alloyed galvanized steel sheet comprising: a Si-containing cold-rolled steel sheet containing 0.1% to 3.0% Si by mass; an Fe-based electroplated layer formed on at least one surface of the Si-containing cold-rolled steel sheet; and an alloyed galvanized layer formed on the Fe-based electroplated layer; in an intensity distribution measured by glow discharge emission spectroscopy, (I Si，Fe ) / (I Si，bulk ) is 0.30 or more, and the average C concentration in the range of 10 μm to 20 μm in the thickness direction from the interface between the alloyed zinc plating layer and the Fe-based electroplating layer to the Fe-based electroplating layer side is 0.10 mass % or less.