42results about How to "Guaranteed deposition" patented technology

The invention relates to a multi-stage magnetic field straight pipe magnetic filtration and pulsed bias compounded electrical arc ion plating method, and belongs to the technical field of material surface treatments. In the prior art, plasma transmission efficiency is low and pulsed bias can not completely remove large particles due to applying of magnetic filtration on an arc source. A purpose of the present invention is to solve problems in the prior art. The method comprises: 1, connecting a workpiece to a pulsed bias power supply, connecting an electrical arc ion plating target source to a target power supply, and connecting a multi-stage magnetic field straight pipe magnetic filtration device in front of the target source; 2, carrying out thin film deposition, wherein work gas is introduced until achieving 0.01-10 Pa when a pressure in a vacuum chamber is less than 10<-2> Pa, the pulsed bias power supply is opened, a pulsed bias amplitude value, frequency and a duty ratio are adjusted, the target power supply is opened, plasma is generated, the multi-stage magnetic field straight pipe magnetic filtration device is opened, removal of large particles and efficient transmission of the plasma in the magnetic filtration device are achieved, process parameters are adjusted, and a thin film with no large particle defect is rapidly produced; and 3, adopting a single-stage magnetic field to combine direct current/pulsed bias to obtain a thin film with a certain thickness.

The invention discloses a wire storing device, which comprises a fixed part, a driving wire wheel set and a driven wire wheel set. The driving wire wheel set is provided with a plurality of driving wire wheels and a driving pivot. The plurality of driving wire wheels are assembled on the driving pivot. The driven wire wheel set is provided with a plurality of driven wire wheels and a driven pivot. The plurality of driven wire wheels are assembled on the driving pivot. One end of the driving pivot is fixed on the fixed part. The driving pivot and the driven pivot are arranged in parallel. The driven wire wheel set is below the driving wire wheel set. The wire storing device is characterized by comprising driving and speed-adjusting equipment which is used for driving the driving wire wheels and controlling the rotation speed of the driving wire wheels. The wire storing device disclosed by the invention is high in wire storing capacity. Furthermore, the wire quality can be ensured after wires are stored.

The invention discloses a magnetron sputtering method for depositing a thin film. The method comprises the following steps that within first preset time, process gas is introduced into a reaction chamber; within second preset time, first DC bias is exerted on a target material, and lighting-up is carried out; within third preset time, introducing of the process gas is stopped; within fourth preset time, the first DC bias is increased to be second DC bias, RF bias is loaded on a lower electrode at the speed of 500 W/s-2000 W/s, and the thin film is deposited into a silicon through hole; within fifth preset time, exerting of the DC bias and the RF bias is stopped, and the process gas continues to be introduced into the reaction chamber; the steps are repeated until the thickness of the thin film meets the process requirement. The magnetron sputtering method for depositing the thin film can effectively prevent the lower portion of the reaction chamber from being lightened and ensure that the thin film can deposit in the silicon through hole smoothly.

The invention discloses a metal lithium negative electrode with a preset stable protective film and a preparation method thereof, which belong to the field of metal lithium negative electrode secondary batteries such as lithium-sulfur batteries and aim to solve the problems of poor safety and cycling stability of the metal lithium negative electrode. The method comprises the following steps of: roughening the surface of a current collector such as a copper foil or foamy copper in advance, then coating a polymer/ceramic composite film, and then electrically depositing metal lithium between thecurrent collector and a protective film. The lithium ion conduction and electronic insulation of the preset protective film ensure that the electrodeposited metal lithium is deposited on the interfaceof the protective film and the current collector. The preset protective film has elasticity, can keep complete along with the displacement of the surface of the metal lithium in the charging and discharging process, and has enough strength to prevent lithium dendrites from being generated, so that the safety of the metal lithium negative electrode is improved; the protective film separates the metal lithium from the electrolyte to prevent reaction, dead lithium cannot be generated, the shuttle effect can be inhibited in the lithium-sulfur battery, and the cycling stability is good. And the metal lithium negative electrode with the preset protective film is stable in air, so that the battery is convenient to assemble.

The invention discloses a hydrocracking method. The method comprises the following contents: heavy distillate oil raw material and hydrogen orderly enter a hydrorefining reactor, a hydrocracking reactor and a separation system after being mixed; a cylinder with a bottom is arranged at an upper part of the hydrorefining reactor, the height of the cylinder is 4%-20% of the height of the hydrorefining reactor, and the outer diameter of the cylinder is 85%-95% of the inner diameter of the hydrorefining reactor; holes through which the material flow can pass are formed on the bottom and the side wall of the cylinder, and the sizes of the holes are 1-40 mesh; the cylinder is filled with hydrorefining catalyst, the infrared acid amount and the active metal content of the filled catalyst are in anenhanced situation along the material flow direction, the catalyst pore volume, the particle size and the specific surface area are in a reduced situation, and the bottom of the cylinder is filled with the conventional hydrorefining catalyst. Compared with the existing hydrocracking technology, the hydrocracking process disclosed by the invention is more flexible in flow, can process more inferior raw material, and greatly improves the processing capacity of the device.

The invention discloses a strain meter using silicon-germanium heterojunction nanowire arrays as sensitive elements. The strain meter comprises an silicon-on-insulator wafer and an oxide layer covering the silicon-on-insulator wafer. A deep groove is formed in the silicon-on-insulator wafer. The oxide layer is disposed on both the side wall and the bottom of the deep groove. Two windows for growing nanowire are respectively formed in the two opposite side walls of the deep groove. A tin nano-particle catalyst layer is disposed on each window. One silicon-germanium heterojunction nanowire array grows on each tin nano-particle catalyst layer. The two opposite windows are connected through the silicon-germanium heterojunction nanowire arrays. The strain meter using the silicon-germanium heterojunction nanowire arrays as the sensitive elements has the advantages that the sensitivity of sensitivity sources is increased. In the mean time, the invention further discloses a preparation method of the strain meter, and the preparation method is simple and compatible with the existing integrated circuit processes.

The invention discloses a health product for increasing bone density, which consists of cattle bone meal, chondroitin sulfate and vitamin D3. Preferably, mass percentages of the components of the cattle bone meal, the chondroitin sulfate and the vitamin D3 by weight are: 74 to 75 percent, 24 to 25 percent and 0.1 to 1 percent respectively. The invention also provides a method for preparing the health product. Animal tests prove that after a rat orally takes the health product for three months, the final weight and the added weight of the rate are both higher than those of a basal feed group and a calcium carbonate control group, and the differences are statistically meaningful; the apparent absorption rate of calcium of the health product is higher than that of the calcium carbonate control group; and the dry weight of the thigh bone and the density at the distal end of the thigh bone of the health product group are obviously higher those of the basal feed group and the calcium carbonate control group. The health product of the invention has the advantages of good calcium supplying effect, high absorption rate, obvious increase of the bone density and wide application prospect.

The invention discloses a method for preparing an overall semal accurately formed by additive manufacturing and electrolytic machining. The method combines an electrolytic machining method with a laser additive manufacturing method, at first, grooves are formed in a hub through electrolytic machining, then blade blanks are fabricated on the hub with the grooves by the laser additive manufacturingmethod, the blade blanks are finally machined by the electrolytic machining method, and thus the overall semal can reach design accuracy; and blade additive deposition begins at the grooves, stress concentration at the joint of the hub and blades can be effectively avoided, the overall use performance of components is improved, and the service life of the components is prolonged. The method not only can give full play to the advantages of high utilization rate and free forming of additive manufacturing materials, but also overcome the contradiction between the deposition efficiency and workpiece accuracy of the additive manufacturing materials, enables the dimensional accuracy and surface quality of workpieces to reach high standards, finally reduces manufacturing procedures, greatly shortens the processing cycle of the overall components and reduces the production cost.

The invention discloses a portable raw coal sampling device. The portable raw coal sampling device comprises a sleeve, a sampling container and a connection tube which communicates the sleeve with the sampling container, wherein a strand opening is formed in each of two ends of the sleeve; the sampling container comprises a tank body, a cover body and a blockage porous plate which is arranged in the tank body; the tank body is divided by the blockage porous plate into an air inlet side and an exhaust side, an exhaust hole is formed in the cover body on the exhaust side, and a decompression filter net is arranged on the exhaust hole. The sealed sampling in the whole process is realized by utilizing the strand openings, flying ash is prevented from being splashed everywhere, the sanitation of the peripheral environment is protected, the human body is prevented from being injured, the deposition of the coal ash in the sampling container can be effectively guaranteed by combining the blockage of the blockage porous plate with the pressure-retaining exhaustion of the decompression filter net, the collection effect is improved, the completeness of the coal powder sample also can be improved, and the accuracy of the coal powder sample can be improved.

The invention provides an aluminum silicon carbide high-power LED radiator and a preparation method thereof. The preparation method comprises the following steps: proportioning, ball-milling and mixing, granulating, and pretreating raw materials to obtain granulated powder; forming the granulated powder into a silicon carbide ceramic prefabricated part through a cold isostatic pressing technology; sintering the formed silicon carbide prefabricated part; smelting a ZL101A aluminum alloy to obtain an aluminum alloy melt; putting the silicon carbide ceramic prefabricated part into a steel mold through a vacuum pressure infiltration method, pressing molten aluminum alloy into pores of the silicon carbide ceramic prefabricated part by adopting high-pressure inert gas at a certain temperature in a vacuum environment, and carrying out heat treatment to prepare an aluminum silicon carbide casting; and carrying out surface metallization plating process treatment on an aluminum silicon carbide finished product to form the aluminum silicon carbide high-power LED radiator. The method overcomes the defects of complex process, expensive equipment, long production period and high energy consumption, has the advantages of compact products, excellent performance, simple operation and low cost, and is wide in application range.

The invention relates to a gas circulating system for preparing high-quality diamond and an application method thereof, belonging to the field of material preparation. The gas circulating system comprises direct current jetted plasma chemical vapor deposition systems, a gas supply system, a tail gas circulating system and a gas purification system. The gas supply system supplies feed gas for two direct current jetted plasma chemical vapor deposition systems. The tail gas circulating system can pump out tail gas in the deposition systems and supply the tail gas to the gas purification system composed of a hydrogen purification apparatus. After the tail gas is purified, high-purity hydrogen and a gas mixture containing argon and carbon are separated, wherein the high-purity hydrogen is supplied for deposition devices, and the tail gas containing argon and carbon being used as the feed gas is supplied for one deposition device to deposit heat-sink grade diamond. Another deposition devicecan realize the supply of high-purity gas to deposit an optical-grade diamond film. By the process, the gas circulating system realizes the recycling of the high-purity hydrogen, can meet the preparation demand of a high-quality diamond film, and can also reduce the preparation cost.

The invention provides a self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method. According to the system, multi-stage humidifying activation is adopted, the final ultralow emission effect of flue gas can be achieved, and wastewater-free emission can also be achieved. A self-circulation return material gradient humidifying flue gas desulfurization and denitrification tower is used for desulfurizing and denitrifying flue gas, sulfur dioxide is removed by chemical absorption reaction of an alkaline desulfurizing agent, and nitric oxide is oxidized into high-valence nitric oxide by an oxidizing agent to be absorbed and removed.