31results about How to "Uniform and dense texture" patented technology

The invention provides ion injection and plasma deposition equipment, which comprises an ion source and a vacuum chamber, wherein the wall of the vacuum chamber is provided with a vacuumizing port and at least one opening for communicating with the ion source; the vacuum chamber is internally provided with an unreeling roller, a cooling part and a reeling roller; the cooling part comprises at least one cooling roller; the cooling roller, the unreeling roller and the reeling roller are mutually parallel, and the axial direction of the cooling roller is perpendicular to the direction in which the plasmas enter the vacuum chamber; the cooling roller is in one-to-one correspondence to the opening in a horizontal height, or the opening is in one-to-one correspondence to the cooling roller in the left to right direction or in the front to back direction; or the cooling roller is positioned just below or just above the opening correspondingly. The invention also provides a method for processing films by using the plasmas. The equipment provided by the invention can be used for carrying out a continuous plasma deposition and / or ion injection operation to the films.

The invention relates to a printed circuit board, in particular to a metal-based conductive circuit board used in high-power electronic devices, and belongs to the technical field of electronic circuits. The printed circuit board includes a bottom layer, an insulating layer and a conductive layer. The material of the bottom layer is metal; an insulating layer is arranged on the bottom layer, and the material of the insulating layer is silicon oxide; a conductive layer is arranged on the insulating layer. In the metal-based conductive circuit board provided by the invention, the silicon oxide insulating layer has good heat resistance and corrosion resistance, is dense and uniform, and is firmly combined with the substrate, which can effectively overcome the differences between the circuit layer, the insulating heat-conducting layer and the metal base layer. The expansion coefficient causes problems such as low mechanical strength and difficult processing. The thermal conductivity of the silicon oxide insulating layer is higher than that of ordinary fibers and resins, and the texture of the film is dense and uniform, so that the heat dissipation performance of the metal-based conductive circuit board is better.

The invention relates to the technical field of pharmaceutical preparations, in particular to a methylcobalamin tablet and a preparation method thereof. The methylcobalamin tablet provided by the present invention includes a plain tablet and a coating; wherein, the plain tablet is composed of methylcobalamin, granulated lactose for direct compression, microcrystalline cellulose, croscarmellose sodium and calcium stearate , under the appropriate selection and proportion of auxiliary materials, the tablet can have good uniformity of active ingredients, and the materials and preparation process are reasonable, so that the product is stable and the growth of related substances is slow.

The invention provides a preparation method and application of a manganese-cobalt spinel coating, and relates to the technical field of coating materials. The preparation method of the manganese-cobalt spinel coating firstly mixes the manganese-cobalt mixed powder with the solution to obtain a mixed slurry; then applies the mixed slurry to the surface of a ferritic stainless steel connector and dries to obtain an intermediate coating A; Then sinter the ferritic stainless steel connecting body with the intermediate coating A on the surface under a reducing atmosphere, and then pass it into air to oxidize at a high temperature to obtain a manganese-cobalt spinel coating. The above preparation method has the advantages of simple preparation process, easy operation and strong economy, and can generate a spinel coating with uniform and dense texture. It has been verified by experiments that the manganese-cobalt spinel coating prepared by the above preparation method has good electrical conductivity at high temperature, and its surface specific resistance can reach 10mΩ·cm 2 At the same time, the coating has good stability, and there is no obvious resistance increase in the range of 500 hours.

The invention discloses a preparation method of a hydrotalcite-based magneto-optical thin film material. The process utilizes metal ion adsorption deposition, obtains a hydrotalcite-based magneto-optical thin film precursor under vacuum conditions, and then uses inert gas washing, ultraviolet curing and other processes A finished film material is obtained. The prepared hydrotalcite-based magneto-optical thin film material has the advantages of simple manufacturing process, uniform and compact texture of the thin film material, superior electrical properties, and good application prospects.

The invention relates to the technical field of inorganic materials, in particular to a low-reactivity inorganic boron nitride powder and a preparation method thereof. The method includes the following steps: adding borazine into the autoclave, feeding an inert gas, and increasing the pressure to 1-5MPa; after increasing the pressure, the temperature is raised to 100-150°C for the first time, and the temperature is kept for 0.5-6h; the temperature is raised for the second time To 150-200°C, keep warm for 0.5-3h to obtain a solid product; pulverize the solid product and obtain a low-reactivity inorganic boron nitride powder after refinement; through the preparation method of the low-reactivity inorganic boron nitride powder It is designed to solve the problem of preparing inorganic boron nitride powder in the prior art, which needs to be obtained under high temperature conditions and has high requirements for equipment. At the same time, the obtained inorganic boron nitride powder has low porosity, moderate porosity and moderate reactivity. technical problem.

A method includes following steps. (1) A metal layer is vaporized on the MgO monocrystal substrate. Then, the substrate is fixed on the negative electrode for stand by application. (2) YBa2Cu3O7-delta sintered is ground till the granularity of the powder is less than 0.1-10 micros. The powder is mixed with organic solvent in mixing ratio being as 20g / liter. The YBa2Cu3O7 delta electrophoresis fluid is prepared by stirring up the organic solvent making the fluid disperse evenly. (3) The YBa2Cu3O7-delta electrophoresis fluid and the electrode with the motorcrystal substrate are put to the cleaned electrophoresis pool. The even YBa2Cu3O7-delta film is obtained after 20-900V DC current being add to electrodes and 5-1600 seconds deposit time being kept.

The invention provides a method for preparing a spinel coating and its application in preparing solid oxide fuel cells, and relates to the technical field of coating materials. The preparation method of the spinel coating is to first provide a nitrate solution, and then spray the nitrate solution on the surface of the ferritic stainless steel by means of ultrasonic atomization spraying to form a spinel oxide layer attached to the surface of the ferritic stainless steel. The nitrate solution contains the metal required for the formation of the spinel coating; repeat the above steps of spraying until a 5-50 μm thick spinel oxide film is formed on the surface of the ferritic stainless steel, and sintered to prepare a spinel oxide film. Spar coating. The above preparation method has the characteristics of simple preparation process and easy operation, and can generate a spinel coating with uniform and dense texture. At the same time, the method for preparing the spinel coating by ultrasonic atomization spraying in the present application has the advantages of low energy consumption, high material utilization rate and environmental friendliness compared with the existing spinel coating preparation method.

Provided is a metal gate field effect transistor and a manufacturing method thereof. The manufacturing method of the metal gate field effect transistor comprises the following steps: forming dummy gates by applying a gate-last approach; removing the dummy gates to form openings; sequentially forming work function metal material layers and metal barrier layers on the lateral walls and the bottoms of the openings, wherein the work function metal material layers and the metal barrier layers are not fully filled with the openings; forming through holes of contact holes above a source electrode and a drain electrode; and forming filler metal layers in an electrodeless electroplating mode, wherein the filler metal layers are filled with the openings and the through holes in the contact holes. By utilizing the electrodeless electroplating metal mode to form a last layer of metal gates and the contact holes of a source region and a drain region, metal texture of metal in the metal gates and the through holes of which a high aspect ratio is same as the contact holes is compact and even, and is free of cavities and gaps. Process steps are saved, process efficiency is improved, and process cost is saved. In the meanwhile, by selecting the metal filled in the contact holes, the metal gate field effect transistor and the manufacturing method thereof can reduce parasitic resistance of the contact holes and the drain electrode.

The invention discloses a vacuum lost foam casting process which includes the following steps: bonding and combining foam sand to form a cavity membrane with the same size and shape with a casting part; placing deslagging sheets made of foam materials at the wall thickness position of the cavity membrane at intervals; inserting internal chill at the corresponding positions of the cavity membrane according to the hole positions on the casting part needing processing; arranging drainage sheets at the corresponding positions of the cavity membrane according to the position of a runner port; brushing fireproof coatings on the cavity membrane, drying the cavity membrane and burying the cavity membrane in quartz sand for vibration molding; performing bottom injecting type pouring under vacuum negative pressure, simultaneously filling in oxygen to lead the cavity membrane to burn and gasify, and leading liquid metal to occupy the space position of the cavity membrane; and solidifying and cooling the cavity membrane to form the casting part. The vacuum lost foam casting process enables the casting part to be compact in texture and accurate in size, and can improve rate of finished products.

The invention discloses a method for preparing microcrystalline glass by using yellow-phosphorus slag and chromium slag and belongs to the field of resource converting of wastes. The microcrystalline glass contains the raw materials in parts by weight: 45-55 parts of yellow-phosphorus slag, 25-35 parts of chromium slag, 10-20 parts of quartz sand, 3-6 parts of reducer and 1-3 parts of fluorite and is obtained through crushing the raw materials and carrying out batching, founding, molding, annealing, nucleating and crystallizing. According to the method, the effective utilization of both the yellow-phosphorus slag and the chromium slag is achieved simultaneously, the problem, i.e., pollution to environment caused by the yellow-phosphorus slag and the chromium slag is directly eliminated, the preparation process is simple, and the product quality is stable, so that the method is applicable to large-scale industrial production.

The invention relates to a multilayer solid electrolyte in the technical field of new energy materials, a preparation method thereof and a lithium battery formed therefrom. The multilayer solid electrolyte includes sequentially arranged 1×10 ‑6 Lithium ion uniform deposition layer, lithium dendrite suppression layer and support layer with ion conductivity above S / cm. The uniform deposition layer of lithium ions can well protect the surface of lithium metal and induce Li + The uniform distribution of lithium dendrites; the lithium dendrite suppression layer provides mechanical support for the electrolyte as a whole, while preventing lithium dendrites from piercing the separator and inhibiting the growth of lithium dendrites; The supporting characteristics and mechanical strength are not high enough to completely prevent the problem of lithium dendrite piercing. On the other hand, it is beneficial to reduce the interface impedance. The multilayer solid electrolyte of the present invention has the advantages of high electrical conductivity, high mechanical strength, low electrolyte / positive electrode interface resistance and high temperature resistance, and can simultaneously realize the protection of lithium metal and the suppression of lithium dendrites.

The invention discloses a ceramic handicraft, comprising a green body and a glaze layer. The green body is prepared from the following raw materials: 35-40 parts of potassium feldspar, 25-30 parts of quartz, 10-15 parts of kaolin, and 10-15 parts of wollastonite. parts, 8-12 parts of lithium porcelain stone, 8-12 parts of bentonite, 7-10 parts of calcium silicate, 6-8 parts of talc, 5-8 parts of alumina, 3-6 parts of polymethyl methacrylate, konjac grape 3-6 parts of mannan, 1-2 parts of lanthanum oxide; the glaze layer is made from the following raw materials: 25-30 parts of quartz, 10-15 parts of albite, 10-15 parts of potassium feldspar, and 15-20 parts of kaolin , 10-15 parts of diatomaceous earth, 8-12 parts of zirconium silicate, 5-8 parts of magnesium sulfate, 5-8 parts of zinc oxide, 3-5 parts of boron oxide, and 1-4 parts of coloring agent. The invention can reduce the firing temperature by optimizing the raw material component selection and content ratio of the green body and the glaze layer, and meanwhile, the ceramic products have uniform and dense texture, low water absorption rate, smooth and uniform surface of the glaze layer, and beautiful appearance.