91results about How to "Reduce the risk of oxidation" patented technology

The present invention provides a method for growing graphene on a surface of a gate electrode and a method for growing graphene on a surface of a source/drain electrode, in which a low-temperature plasma enhanced vapor deposition process is adopted to grow a graphene film, of which a film thickness is controllable, on a gate electrode or a source/drain electrode that contains copper, and completely coincides with a pattern of the gate electrode or the source/drain electrode. The manufacturing temperature of graphene is relatively low so that it is possible not to damage the structure of a thin-film transistor to the greatest extents and the supply of carbon sources that is used wide, having low cost and a simple manufacturing process, where existing PECVD facility of a thin-film transistor manufacturing line can be used without additional expense. The gate electrode or the source/drain electrode is covered with graphene and is prevented from contact with moisture and oxygen thereby overcoming the problem of a conventional TFT manufacturing process that a gate electrode or a source/drain electrode that contains copper is readily susceptible to oxidization. Further, the high electrical conductivity of graphene makes it possible not to affect the electrical performance of the entire device.

The invention discloses a preparation method of a cerium-containing magnet with high coercivity. The method comprises steps that raw materials of the Ce-containing main alloy are blended; raw materials of the grain boundary optimization auxiliary alloy are blended; the raw materials of the Ce-containing main alloy and the raw materials of the grain boundary optimization auxiliary alloy are subjected to vacuum smelting and rapid hardening melt-spinning treatment correspondingly, and a Ce-containing main alloy rapid hardening sheet and a boundary optimization auxiliary alloy rapid hardening sheet are obtained; the Ce-containing main alloy rapid hardening sheet and the grain boundary optimization auxiliary alloy rapid hardening sheet are mixed according to a weight ratio of 1:x, then hydrogendecrepitation treatment and jet milling treatment are performed to obtain mixed powder, lubricating agent is added into the mixed powder and mixed to obtain mixture; magnetic field orientation compression of the mixture is performed, and isostatic cool pressing is performed to obtain a green body; sintering of the green body is performed, and then tempering heat treatment is performed to obtain acerium-containing magnet. The method is advantaged in that the preparation process is effectively simplified, and the risk that the auxiliary alloy is oxidized can be effectively reduced.

A device for acquiring and storing a sediment pore water sample comprises a main body and sampling grid chambers, wherein a group of horizontal grooves are distributed on the main body in a grid manner, a 0.45mum aperture permeation membrane is covered on the surface of the main body, the periphery of the permeation membrane is fixed by a frame on the main body, and the grooves are filled with water to form the sampling grid chambers with a length 10-30mm, a width 1mm, a volume 10-30muL and an interval 1.0mm. The device is vertically inserted into sediment and taken out when ion diffusion is balanced, and the pore water sample in the sampling grid chamber is cooled into ice and freezing-stored under the air isolation condition. After the device is taken out, defreezing is carried out at room temperature under the air isolation condition, and the permeation membrane is pierced to get the pore water sample sucked out from the sampling grid chamber for analysis. The inventive device and method have pore water collection vertical resolution 2mm and balance time 1-3 days in sediment, and the pore water sample can be stored in the device for at least three months.

A nozzle for a thermal spray gun and a method of thermal spraying are disclosed. The nozzle has a combustion chamber within which fuel is burned to produce a stream of combustion gases. The streams of heated gases exit through a pair of linear exhausts which are located on either side of an aerospike. The streams converge outside the nozzle and powdered coating material is introduced into the converging streams immediately downstream of the aerospike. The coating material is heated and accelerated before impacting on a substrate to be coated.

The invention relates to a head (30) for dispensing a cosmetic product, which includes: a device (31) for dispensing the cosmetic product, which has a tubular duct (34) defining a passage (36) for the cosmetic product, and a stopper (6) for blocking the passage (36), which is movable between a position that clears the passage (36) and a position that blocks the passage (36), the stopper (60) including a finger (62) and a skirt (64), the outer surface (48) of the duct (34) and the inner surface (78) of the skirt (64) having complementary engagement means (80, 82) for the rigidly connecting the stopper (60) to the dispensing device (32). The finger (62) supports a peripheral scraping device (70) projecting radially from a peripheral surface (72) of the finger (62), the scraping device (70) having at least one circumferential line (74) suitable for being in contact with the duct (34) when the stopper (60) is in a blocked position.

The invention relates to an iron-cobalt-tantalum alloy sputtering target material and a preparation method thereof. The preparation method comprises the steps of (1) loading iron-cobalt-tantalum alloypowder with a target atomic ratio into a die, then sealing the die, and carrying out tap compaction treatment; (2) degassing the die subjected to the tap compaction treatment; (3) carrying out hot isostatic pressing treatment on the degassed die under 750-900 DEG C to obtain a crude product of the iron-cobalt-tantalum alloy sputtering target material; and (4) machining the obtained crude productof the iron-cobalt-tantalum alloy sputtering target material to obtain the iron-cobalt-tantalum alloy sputtering target. The preparation method has the advantages of simple process, low cost and the like; and in addition, the prepared iron-cobalt-tantalum alloy sputtering target material not only has the density of 98% or above, the bending strength of 700 MPa or above, the magnetic flux of 30% orabove and the oxygen content of 600 ppm or below, but also has good machining performance.

A thermal processor is adapted for annealing substrates. The processor has a sealed process chamber. Air is excluded from the process chamber during processing to avoid oxidation of substrate surfaces, such as copper surfaces. The substrate temperature is controlled by selectively positioning the substrate between a hot plate and a cold plate operating at steady state conditions. During loading and/or unloading, the air flow is induced over the substrate. This keeps the substrate at a temperature low enough to avoid oxidation, even though the heater may remain on.

The invention discloses an integrated device for preparing nano zero-valent iron in a laboratory and a preparation method. The integrated device comprises a reaction and preparation device, a connecting device, a separating and cleaning device, a heating and drying device and a fixing and supporting device, wherein the separating and cleaning device is fixed on the bottom of the fixing and supporting device; the reaction and preparation device is connected to the upper portion of the separating and cleaning device through the connecting device, and is used for carrying out preparation, separating and cleaning processes of samples; the connecting device is connected with the fixing and supporting device through a turnover mechanism, and is used for overturning the separating and cleaning device at an angle of 180 degrees; the heating and drying device is additionally mounted on the outside of the separating and cleaning device which overturns at an angle of 180 degrees, and is used forcarrying heating and drying processes; and the separating and cleaning device is connected with a negative-pressure collecting device which is used for a material transferring process. In a word, reaction, cleaning, drying and collection are integrated, in the whole process, exposed transfer does not exist, and material oxidation risks are reduced.

The invention discloses a preparation method of a stable amino acid-ferrous complex. The amino acid-ferrous complex is prepared from optimized amino acid and a ferrous salt according to a molar ratioof 1:1 in the presence of iron powder under the condition of a water system. An auxiliary agent is used to achieve the effects of regulating the pH value, digesting the iron powder, and carrying out secondary complexation or chelating on free ferrous, so that after the obtained reaction liquid is subjected to spray drying, the stable amino acid-ferrous complex is obtained. A high-level ferrous content and a low-level oxidation rate (ferric iron content) are achieved, and relatively good antioxidant capacity is achieved in a water solution, so that excellent stability is exhibited, oxidation resistance of a ferrous complex product in a storage and transportation process is improved, and efficient utilization of the ferrous product is facilitated. According to the preparation process of themethod, the steps of filtering the iron powder and digesting the iron powder by adding inorganic acid are optimized, no three wastes (waste gas, waste water and industrial residue) are generated, cleaning can be carried out continuously, and in addition, the used auxiliary agent can also provide favorable nutritional ingredients.

The invention relates to the field of metal composite materials, in particular to copper paste capable of achieving low-temperature high-density sintering. The copper paste comprises spherical copperparticles, flake copper particles, flake indium particles and high-link resin; and the ratio of the two kinds of copper particles is more than 80%, the ratio of the indium particles is 10%-20%, and the ratio of the high-link resin is 0-10%. According to the copper paste body, under the non-pressure condition, the sintering temperature can be as low as about 180 DEG C to 250 DEG C, and the densityis more than 95% after sintering.

The invention relates to a rapid reduction system for producing direct reduced iron from powdery ore, comprising: a rapid reduction reactor, a heating system, a feed system, a discharge system, and a reduction gas system, the temperature distribution in the device is uniform, and the reduction tail gas circulation is adopted The method of utilization realizes the recycling of reducing gas resources, adopts multi-layer air inlets, the distribution of reducing gas is more uniform, and the hot reducing gas entering the reactor can directly continue to undergo reduction reaction with unreacted ore powder, which is beneficial Improve the metallization rate in the reduction product and enhance the reduction effect.

The invention discloses a negative prelithiated electrode. The negative prelithiated electrode comprises a metal current collector, and an active substance layer, a lithium supplementing layer and a functional polymer film protection layer which sequentially coat the surface of the metal current collector, wherein a functional polymer is a polymer containing a lithium-philic polar functional group. The invention discloses a preparation method of the negative prelithiated electrode. The preparation methodcomprises the following steps: S1, coating the surface of the metal current collector withthe active substance, and carrying out prelithiation treatment to obtain an intermediate electrode; and S2, mixing and stirring the functional polymer and an organic solvent for 6-10h, conducting standing for 12-24h, uniformly coating the surface of the intermediate electrode with a formed supernatant, and performing vacuum drying at 45-85 DEG C to obtain the negative prelithiated electrode. The risk that the lithium supplementing layer of the prelithiated electrode is oxidized can be effectively reduced, and the initial efficiency, the energy density, the cycling stability and the safety performance of a lithium ion battery are improved.

The invention discloses a brewing liquid preparation device. The brewing liquid preparation device comprises a boiling and settling tank and a saccharifying and filtering tank, the saccharifying and filtering tank is communicated with the boiling and settling tank, the saccharifying and filtering tank comprises a saccharifying and filtering tank body, a grain raking component, a filter screen and a first heating device; the first heating device is fixed on the saccharifying and filtering tank body, the grain raking component and the filter screen are mounted in the saccharifying and filtering tank body, and the grain raking component is located above the filter screen. The device is designed into a structure with two devices, namely the saccharifying and filtering tank and the boiling and settling tank, the first heating device is arranged on the saccharifying and filtering tank body, a heating tank is not needed, the device is simplified, and the conveying of a brewing liquid with particles is avoided; the grain raking component has the complex functions of stirring, raking grains and discharging grains, then the brewing liquid is guaranteed to be heated evenly when stirred in the saccharifying process, the spent grain is loosened while the filtering characteristic of a grain layer is not changed in the filtering process, so that the optimal filtering quality is reached, the filtering speed is accelerated, and the risk of oxidation of the brewing liquid is reduced.

The invention discloses an FPC (Flexible Printed Circuit) multilayer board based on a high-frequency FRCC and a high-frequency double-sided board. The FPC multilayer board comprises at least one FRCCand at least one double-sided board, wherein the FRCC and the double-sided board are pressed together; the FRCC comprises a first copper foil layer, a first low dielectric glue layer and a second lowdielectric glue layer; the double-sided board is at least one of a PI type double-sided board and an LCP type double-sided board. According to the invention, the FRCC without the LCP layer is matchedwith the high-frequency PI type double-sided board or the LCP type double-sided board to manufacture a three-layer to six-layer FPC, the process flow for manufacturing the FPC is simple, the laser drilling process is better, the situation of retraction is not easy to occur, the FPC has lower hygroscopicity and lower Dk and Df electrical properties, fast press equipment or pressure transmission equipment can be matched, the FPC has the cost advantage, the thick film manufacturing technology is provided, and meanwhile, the FRCC with the simpler interface and the lower cost is used in the FPC multilayer board structure based on the high-frequency FRCC and the high-frequency double-sided board.

The invention discloses a blue-light copper-gold powder for metal spraying and a preparation method thereof. The method comprises the following components of, by mass, 70-74% of copper, 22-28% of zincand 1-2% of polyethylene glycol solution; and after the procedures of smelting, ball milling, grading and polishing, colored alloy pigment with different particle sizes scaly-shaped structures is obtained, wherein the particle sizes range from 2 micro to 40 micro, and the appearance of the colored alloy pigment is blue light. According to the method, the addition of an adhesive or other compositions is reduced, the blue-light copper-gold powder is made into a scaly shape which is in a micron-grade and in a blue-light color, the use performance is more facilitated, meanwhile, the risk of oxidation is also reduced.

The invention discloses a preparation method of high-purity sugammadex sodium. The high-purity sugammadex sodium is prepared from inositol phosphate and derivatives thereof. The specific process comprises the following steps of adding a specific type of protective agent into a crude sugammadex sodium product, and performing recrystallizing under the protection of inert gas to obtain a pure sugammadex sodium product, wherein the protective agent is selected from the inositol phosphate and the derivatives thereof, such as inositol hexaphosphate and salts or esters thereof, partial degradation products of the inositol hexaphosphate, such as inositol pentaphosphate, inositol tetraphosphate, inositol triphosphate, inositol diphosphate and inositol monophosphate, and one or a mixture of two or more of the above-mentioned substances and salts or esters thereof in any proportion. The method is simple and convenient to operate, high in product purity, good in safety, few in anaphylactic reaction, good in economical efficiency and more suitable for industrial production.

A pneumatic conveyer with a nitrogen recycling function is characterized in that the bottom of a buffer chamber is connected with a pneumatic conveying unit via an adjustable rotary valve, the pneumatic conveying unit is connected with a storage chamber via a pipeline, the storage chamber is connected with a storage chamber dust collector via a pipeline, the storage chamber dust collector is connected with a constant pressure gas reservoir via a pipeline, the constant pressure gas reservoir is connected with a gas compressor via a pipeline, the gas compressor is connected with a gas dryer viaa pipeline, the gas dryer is connected with a nitrogen maker via a pipeline, the nitrogen maker is connected with a gas buffer tank via a pipeline, and the gas buffer tank is connected with the pneumatic conveying unit via a pipeline to form a circulation loop. The pneumatic conveyer has the advantages that conveying can be achieved for fragile materials and organic materials having high requirement on moisture, conveying process safety is greatly improved, and the content of water in materials is effectively controlled; nitrogen circulation is provided for the conveying process, nitrogen is produced with low oxygen content, processing time of the nitrogen maker is effectively extended, and conveying cost is reduced.

The invention provides a device with a titanium-based gold-plated electrode for generating hydrogen-rich water through electrolysis, and belongs to technical field of electrochemistry. The device comprises an electrolytic tank, a negative electrode, a positive electrode and a controllable electrolytic power supply, wherein the negative electrode, the positive electrode and the controllable electrolytic power supply are put in the electrolytic tank. The negative pole and the positive pole of the controllable electrolytic power supply are connected with the negative electrode and the positive electrode through wires respectively; a stainless steel electrode is adopted as the negative electrode, and the titanium-based gold electrode is adopted as the positive electrode. Compared with an existing DSA positive electrode composed of Ir, Ru, Ti and oxides thereof, by means of the titanium-based gold-plated positive electrode, the quantity of residual chlorine generated in the electrolytic process is significantly decreased.

The invention discloses a combined converting terminal and an automotive relay. The combined converting terminal includes a plate-shaped insulating body, and at least two connecting terminals; wherein the at least two connecting terminals are embedded and molded in the insulating body during injection molding of the insulating body respectively, and the connecting terminals are in electrical insulation with each other; and each connecting terminal includes a first terminal, a second terminal and a third terminal, the first terminal and the second terminal extend out from adjacent two surfaces of the insulating body, and the first terminal is electrically connected to the second terminal through the third terminal. The automotive relay includes a PCB assembly and the combined converting terminal; the second terminals of the at least two connecting terminals are pins respectively and are inserted into at least two pin inserting holes arranged in the PCB assembly respectively; and the distance between the second terminals of the at least two connecting terminals fits the distance between the at least two pin inserting holes of the PCB assembly. According to the invention, the connections between various connecting terminals and the insulating body are more solid and are not easy to loosen and fall off.