4537 results about "Molybdenum" patented technology

Molybdenum-containing films are deposited on semiconductor substrates at relatively low temperatures of between about 100 and about 500° C., such as between about 200 and about 450° C. For example, molybdenum metal can be deposited at this temperature on a substrate having exposed metal and exposed dielectric in a substantially non-selective manner. In one implementation, a substrate having a recessed feature is provided, where the recessed feature has an exposed dielectric on the sidewalls and an exposed metal on the bottom. The substrate is exposed to a molybdenum-containing precursor, a reducing agent, and a silicon-containing reagent, to thereby reduce the molybdenum-containing precursor and form a molybdenum-containing layer that includes metallic molybdenum. The use of the silicon-containing reactant leads to a reduction in on-metal / on-dielectric selectivity of molybdenum deposition.

Provided herein are low resistance metallization stack structures for logic and memory applications and related methods of fabrication. The methods involve forming bulk conductive films on thin low resistivity transition metal layers that have large grain size. The bulk conductive films follow the grains of the low resistivity transition metal films, resulting in large grain size. Also provided are devices including template layers and bulk films.

A molten salt reactor system may produce fission products, such as molybdenum-99, which may be extracted by an extraction system. The extraction system may be configured to sparge the molten fuel salt with an inert gas to dislodge gaseous fission products from the molten fuel salt, so that the gaseous fission products flow through an off-gas outlet into a gas transfer assembly. The example extraction system may also include introducing a gaseous halogenating agent to prevent the fission products from depositing on a pipe surface of the gas transfer assembly. The gaseous fission products may flow from the gas transfer assembly to a carboy containing an aqueous solution, to process and / or filter the fission products. The resulting solution containing processed fission products in the carboy may be further distilled into final, usable products.

Vapor deposition processes for forming thin films comprising molybdenum on a substrate are provide. In some embodiments the processes comprise a plurality of deposition cycles in which the substrate is separately contacted with a vapor phase molybdenum precursor comprising a molybdenum halide, a first reactant comprising CO, and a second reactant comprising H2. In some embodiments the thin film comprises MoC, Mo2C, or MoOC. In some embodiments the substrate is additionally contacted with a nitrogen reactant and a thin film comprising molybdenum, carbon and nitrogen is deposited, such as MoCN or MoOCN.

Metallization schemes involve atomic layer deposition (ALD) of molybdenum (Mo) and in some embodiments, ALD of Mo in a feature without a barrier layer. In some embodiments, deposition of the ALD Mo film may be followed by chemical vapor deposition (CVD) or physical vapor deposition (PVD) of a Mo film. In some embodiments, the CVD or PVD Mo film is part of the metallization stack. In other embodiments, the CVD or PVD Mo film is deposited as a sacrificial overburden layer. In some embodiments, deposition of the ALD Mo film may be followed by CVD or PVD of another metal such as tungsten (W). In some embodiments, the CVD or PVD W film is part of the metallization stack. In other embodiments, the CVD or PVD W film is deposited as a sacrificial overburden layer.

Provided are a lithium manganese iron phosphate material and a preparation method therefor, a positive electrode sheet, and a lithium ion battery. The lithium manganese iron phosphate material comprises a core and a coating layer that coats the surface of the core. The chemical formula of the material of the core is LiaMnbFecMdPO4, wherein M comprises at least one element among magnesium, calcium, strontium, cobalt, titanium, zirconium, molybdenum, vanadium, niobium, nickel, scandium, chromium, copper, zinc, beryllium, lanthanum and aluminum. The coating layer is formed by sintering a carbon source, and the carbon coating layer comprises graphitized carbon.

Provided are methods of filling patterned features with molybdenum (Mo). The methods involve selective deposition of Mo films on bottom metal-containing surfaces of a feature including dielectric sidewalls. The selective growth of Mo on the bottom surface allows bottom-up growth and high quality, void-free fill. Also provided are related apparatus.

The invention discloses an external field reinforced molybdenum concentrate impurity removal method, and belongs to the technical field of molybdenum concentrate impurity removal. The method comprises the following steps: (1) microwave enhanced chloridizing roasting: uniformly mixing the molybdenum concentrate and calcium chloride, and carrying out microwave heating roasting in an inert atmosphere protection environment to obtain a roasted product; (2) ultrasonic enhanced acid leaching: adding the roasted material obtained in the step (1) into a hydrochloric acid solution, leaching under an ultrasonic condition, and then sequentially carrying out suction filtration, washing and drying to obtain an acid leached material; and (3) ultrasonic enhanced alkaline leaching is conducted, specifically, the acid leaching material obtained in the step (2) is added into a sodium hydroxide solution, leaching is conducted under the ultrasonic condition, then suction filtration, washing and drying are conducted in sequence, and iron and silicon removal of the molybdenum concentrate is completed. By means of the method, the iron and silicon removal effect of the molybdenum concentrate can be effectively improved, and the iron and silicon removal rate can reach 97% or above.

An apparatus and method for cleaning or etching a molybdenum film or a molybdenum nitride film from an interior of a reaction chamber in a reaction system are disclosed. A remote plasma unit is utilized to activate a halide precursor mixed with an inert gas source to form a radical gas. The radical gas reacts with the molybdenum film or the molybdenum nitride film to form a by-product that is removed from the interior of the reaction chamber by a purge gas.

The invention provides a method for synthesizing adiponitrile through selective ammoxidation of cyclohexene oxide. The invention aims to simulate and optimize the process of synthesizing adiponitrile from cyclohexene oxide by a one-step direct ammoxidation method to develop a novel multiphase composite metal vanadium-based oxide catalyst, the composition of the catalyst is CoaVbPcModMNOx / TiO2, the active elements of the catalyst comprise vanadium element V, cobalt element Co, phosphorus element P and molybdenum element Mo, M is an auxiliary metal element (Mn, Cr, Fe or Ni), and N is an alkali metal (Na, K or Cs); the value range of a is 0.2 to 1.2; the value range of b is 0.8 to 1.5; the value range of c is 0.1 to 0.23; the value range of d is 0.07 to 0.35; x is the oxygen atom proportion required by the metal oxidation valence state. The catalyst has the advantages of simple preparation, good cycling stability, high yield and the like. The yield and the product purity of the adiponitrile are improved, the energy consumption in the production process of the adiponitrile is reduced, and the breakthrough of the production technology of the adiponitrile is realized.

The invention relates to the field of linear cutting machine tools, and provides a linear cutting automatic wire threading method and device.The linear cutting automatic wire threading method is characterized by comprising the steps that a lead pipe moving detection wheel with the rotating speed detection function and a lead pipe driving wheel are adopted to control a lead pipe to move up and down from the lower portion of the lead pipe; when downward movement of the lead pipe is blocked, the lead pipe is controlled to ascend by a certain height and rotate by a certain angle to descend, so that the lead pipe is prevented from being damaged, and the success rate of the lead pipe penetrating through the wire penetrating hole is increased; two circular guide nozzles with variable-diameter semicircular grooves in the outer edges are adopted to rotate, a circular hole guide lead pipe and a guide molybdenum wire with the diameter of the lead pipe and the diameter of the molybdenum wire are formed, the position can be updated after the grooves forming the circular hole of the guide molybdenum wire are abraded, and the service life of the circular guide nozzles is prolonged; the automatic threading device is characterized by comprising a mounting plate, a self-protection lead tube driving device, a lead tube rotation driving device and a variable-diameter grooved wheel type guide nozzle, the failure rate of an automatic threading machine tool is reduced, the success rate of automatic threading is increased, and the service life of the guide nozzle is prolonged.

Embodiments of methods of filling features with molybdenum (Mo) include depositing a first layer of Mo in a feature including an opening and an interior and non-conformally treating the first layer such that regions near the opening preferentially treated over regions in the interior. In some embodiments, a second Mo layer is deposited on the treated first layer. Embodiments of methods of filling features with Mo include controlling Mo precursor flux to transition between conformal and non-conformal fill.

The invention discloses a cellulose-based in-situ growth MOF composite aerogel preparation method, which comprises: mixing cellulose powder and dimethylimidazole, adding into deionized water, gradually adding cobalt nitrate and zinc chloride, uniformly stirring, carrying out a heating reaction, adding polyethyleneimine, uniformly stirring, adding a cross-linking agent, carrying out cross-linking, washing, and drying to obtain the cellulose-based in-situ growth MOF composite aerogel. The composite hydrogel is obtained; and finally, sealing, heating and baking the composite hydrogel, washing and drying to obtain the composite aerogel. According to the method, the MOF is synthesized on the cellulose in situ under the low-temperature water phase condition, the composite aerogel containing the MOF material is obtained, the MOF material synthesized on the cellulose in situ has good porosity and particle size and uniformly covers the cellulose, loss of active components is avoided, the problem that the MOF material is prone to agglomeration is solved, and the preparation method is suitable for industrial production. Meanwhile, the adsorption performance is also effectively improved, the adsorbent has good affinity with water, and the surface can be promoted to adsorb three metal ions of vanadium, molybdenum and nickel at the same time.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

Embodiments of methods of filling features with molybdenum (Mo) include depositing a first layer of Mo in a feature including an opening and an interior and non-conformally treating the first layer such that regions near the opening preferentially treated over regions in the interior. In some embodiments, a second Mo layer is deposited on the treated first layer. Embodiments of methods of filling features with Mo include controlling Mo precursor flux to transition between conformal and non-conformal fill.

The present invention relates to a film quality improver, a method of forming a thin film using the film quality improver, a semiconductor substrate fabricated using the method, and a semiconductor device including the semiconductor substrate. The present invention provides a compound having a predetermined structure as a film quality improver. According to the present invention, by forming a shielding area for a molybdenum-based thin film on a substrate, the deposition rate of a molybdenum-based thin film may be reduced, and the growth rate of a thin film may be controlled. Thus, even when forming a thin film using a solid compound on the substrate with a complicated structure at room temperature, step coverage and the thickness uniformity of the thin film may be greatly improved, and corrosion or deterioration may be prevented, thereby improving the crystallinity and electrical properties of a thin film.

Provided are methods of filling patterned features with molybdenum (Mo). The methods involve selective deposition of Mo films on bottom metal-containing surfaces of a feature including dielectric sidewalls. The selective growth of Mo on the bottom surface allows bottom-up growth and high quality, void-free fill. Also provided are related apparatus.

The invention relates to the technical field of heavy metal wastewater treatment devices, in particular to heavy metal wastewater treatment equipment for molybdenum concentrate hydrometallurgy, which comprises a mixing barrel, a layering plate is fixedly mounted in the mixing barrel, a water inlet pipe is arranged below the mixing barrel in a penetrating manner, a water outlet pipe is arranged above the mixing barrel in a penetrating manner, and the upper end of the layering plate is fixedly connected with a central pipe. A chemical feeding device is arranged in the center pipe, a driving face shell is fixedly installed at the bottom end of the layering plate, a driving device is arranged between the driving face shell and the center pipe, and a blade plate is rotationally installed at the inner end of the driving face shell; through the Karman vortex street effect formed by the front end cambered surface and the tail end sharp corner structure of the water-drop-shaped blade plate in the wastewater flowing process, the tail end of the blade plate swings periodically, and the swinging frequency is automatically adjusted along with the change of the water flow speed, so that the medicine applying speed synchronously changes along with the water flow speed.

The invention relates to the field of optical protection materials, and provides a transparent film with laser eavesdropping prevention performance and a preparation method thereof.The transparent film is composed of surface-modified doped tungsten oxide nanosheets, amino-isocyanate bifunctional lithium niobate nanowires, urethane acrylate, an ultraviolet light absorber, a silane coupling agent, a dispersing agent and a flatting agent; the molybdenum-doped tungsten oxide nanosheets are obtained through silane coupling modification after hydrothermal synthesis, and the lithium niobate nanowires are prepared through a gradient modification process of hydrothermal synthesis-silane coupling-isocyanate grafting-phenol end capping. A modified nano material is uniformly dispersed in a resin matrix through an ultrasonic dispersion composite technology, and through blade coating forming, ultraviolet curing and constant-temperature and constant-humidity post-treatment, compared with the prior art, the scheme overcomes the problems that a traditional protective film is insufficient in optical transparency, laser eavesdropping prevention function and dynamic viscoelasticity, and is suitable for the field of high-end security and protection.

The invention relates to the technical field of high-corrosion-resistance stainless steel pipe processing, and discloses a high-corrosion-resistance high-molybdenum stainless steel pipe processing technology based on gradient carbide design, which comprises the following steps: applying an axial gradient magnetic field in a stainless steel pipe rolling process, and combining with dynamic strain rate matching rolling to promote molybdenum atom grain boundary migration and inhibit carbide coarsening, so as to obtain a high-molybdenum-resistance stainless steel pipe. Nano carbide smaller than or equal to 50 nm is formed on the surface layer, and submicron carbide of 200-500 nm is formed on the core part; after rolling, micro-arc oxidation and phosphonic acid group silane dipping are immediately carried out to form a self-repairing passivation film; and finally, an alternating magnetic field and pulse current are adopted for cooperative annealing, and a grain boundary molybdenum-poor region and residual stress are eliminated. Through magnetic field-chemical-thermal multi-field coupling, the material has erosion corrosion resistance of a gradient carbide structure, dynamic passive film self-repairing and low-temperature high toughness, and is suitable for long-acting protection of deep sea oil and gas pipelines.

The invention relates to the technical field of nano catalytic materials, in particular to a preparation method and application of a nano bowl-shaped molybdenum-doped metal cobalt phosphide catalyst. The preparation method comprises the following steps: S1, preparing CoMo-MOF; S2, preparing Mo-CoP; according to the application method, the nanometer bowl-shaped molybdenum-doped metal cobalt phosphide catalyst is applied to the process of catalyzing water electrolysis hydrogen absorption and oxygen absorption reaction. According to the preparation method, the Mo-doped metal organic framework is adopted as a precursor, the target catalyst is prepared through phosphating and calcining, due to the fact that the valence state of Co in cobalt phosphide is improved through molybdenum doping, the intrinsic catalytic activity of the catalyst is improved, and electrolysis of water can be effectively catalyzed.

The invention discloses a highly active graphite felt for vanadium battery and a preparation method thereof, and belongs to the technical field of all-vanadium liquid flow battery electrodes. The method comprises the following steps: electrodepositing a layer of polymer on the graphite felt, then hydrothermally loading metal molybdenum, chelating the metal molybdenum with phytic acid, and finally pyrolyzing at high temperature to obtain a graphite felt loaded with an organic skeleton-metal oxide-organic skeleton hierarchical structure. The hierarchical structure is not only conducive to increasing the specific surface area and active sites of the graphite felt, but also can protect the metal catalyst from falling off or being consumed under long-term catalytic reaction and electrolyte flushing.

The invention relates to the technical field of material detection, and discloses a molybdenum plate detection method and system, and the method comprises the steps: obtaining a to-be-detected molybdenum plate, and collecting a visible light image and an ultrasonic image of the to-be-detected molybdenum plate through a pre-constructed image equipment cluster; according to a preset data processing strategy, carrying out noise reduction processing on the visible light image and the ultrasonic image to obtain noise reduction image data, carrying out molybdenum plate defect identification operation on the noise reduction image data to obtain a surface defect area, an internal defect area, a surface defect type and an internal defect type, and carrying out visual representation to obtain a molybdenum plate defect distribution image; and performing feature extraction and performance index score prediction operation on the molybdenum plate defect distribution image by using a molybdenum plate availability quality detection model to obtain a molybdenum plate performance prediction sequence, and comparing the molybdenum plate performance prediction sequence with an application scene performance requirement sequence to obtain a quality detection result. The defect detection accuracy of the molybdenum plate can be improved, and the utilization rate of the molybdenum plate material is increased.

The invention discloses a method for evaluating the mineralization potential of porphyry copper-(gold-molybdenum) ore. The evaluation method comprises the following steps: determining candidate rock masses with relatively high mineralization potential according to an oxygen fugacity value of magma zircon and / or a magma water content value of hornblende in a rock sample in an evaluation area; the aluminum saturation index ASI of the candidate rock mass is measured and calculated, the distribution coefficient and the distribution coefficient ratio of Cu, Au and Mo between fluid and melt are determined according to the ASI, simulation calculation is conducted through a Rayleigh fractionation model according to the distribution coefficient and / or the distribution coefficient ratio, and the content ratio of Au to Cu to Mo to Cu of the candidate ore body is obtained. According to the method, the mineralization potential of the porphyry copper ore and the enrichment degree and grade of Cu, Au and Mo of potential ore bodies can be rapidly and accurately evaluated.

The invention belongs to the technical field of hydrometallurgy, and particularly relates to a method for separating metal molybdenum and rhenium from a nickel-based superalloy electrochemical dissolving solution, which comprises the following steps: providing the nickel-based superalloy electrochemical dissolving solution, and adjusting the pH value to 0-1.5; the modified MTS9570 resin is used for adsorbing the nickel-based superalloy electrochemical dissolving solution to obtain a molybdenum-absorbed solution, then a sulfuric acid solution is used for leaching, then an ammonia water solution is used for desorption, and a molybdenum desorption solution is obtained; adjusting the pH value of the molybdenum-absorbed solution to 0.5-1.5, adsorbing with modified MTA1721 resin, leaching with a sulfuric acid solution, desorbing with an ammonium sulfate and ammonia water mixed solution, and desorbing with an ammonia water solution to obtain a second-stage rhenium desorption solution; and the molybdenum desorption solution and the second-stage rhenium desorption solution are subjected to evaporation concentration, crystallization, recrystallization and high-temperature hydrogen reduction respectively, and metal molybdenum and rhenium are obtained. According to the method for separating rhenium and molybdenum from the nickel-based high-temperature alloy electrochemical dissolving solution, the rhenium and molybdenum recovery rate and rhenium purity are improved, and the process is simple, convenient and practical.

The invention discloses a high-performance special ceramic material and a preparation process thereof, and the preparation process comprises the following steps: proportioning tungsten carbide, ternary boride, titanium nitride, molybdenum, nickel, silicon, cobalt and other raw materials with nano silicon carbide whiskers according to a ratio, carrying out ball milling treatment, adding a forming agent, and continuing ball milling and granulation; and then, carrying out compression molding on the ceramic powder, carrying out liquid phase sintering in a CO atmosphere, and cooling to room temperature to obtain the high-performance special ceramic material. The Mo3NiB3 ternary boride is introduced, so that the hardness and impact resistance of the ceramic material can be improved, the interface bonding force between a ceramic matrix and a reinforcing phase is enhanced, and the bending strength is improved; the nano silicon carbide whiskers are subjected to nickel plating treatment, so that the interface bonding force can be improved, microcracks are reduced, and the strength and toughness of the ceramic material are enhanced; by optimizing the sintering process and adopting a staged heating mode, grain growth can be controlled, and the density and mechanical properties of the ceramic material are effectively improved.

The invention relates to the technical field of waste catalyst recovery, and particularly discloses a method for recovering valuable metals from a waste catalyst containing vanadium and molybdenum. Comprising the following steps: S1, heating and roasting the waste catalyst containing vanadium and molybdenum, continuously heating and roasting, and cooling to obtain a roasted material; s2, mixing the roasted material with a sulfuric acid solution A containing oxalic acid, and heating and leaching to obtain a leaching solution A and a residue A; mixing the residue A with a sulfuric acid solution B containing thiourea and ethylenediaminetetraacetic acid, heating, carrying out secondary leaching to obtain a leaching solution B and a residue B, and washing the residue B with an acid solution to obtain a washing solution; combining the leaching solution and the washing solution to obtain a combined solution; s3, adjusting the pH value of the mixed solution to 2.5-3, then adjusting the pH value to 4.5-5, adding a dimethylglyoxime alcohol solution, and heating to obtain a purified solution; uniformly mixing the purified liquid with the extraction liquid to obtain an organic phase containing vanadium and molybdenum; and S4, reverse extraction and product preparation. The ammonium molybdate and the vanadium pentoxide obtained in the invention have high purity, and the recovery rate of vanadium and molybdenum is high.

The invention relates to the field of energy storage battery materials, in particular to a high-entropy alloy coated single crystal nickel-rich cobalt-free positive electrode material and a preparation method thereof.The preparation method comprises the following steps that S1, nano nickel oxide, nano manganese oxide and LiOH.H2O are ground and mixed to be uniform, and mixed powder is obtained; s2, uniformly stirring and mixing the mixed powder and the high-entropy alloy precursor solution, performing vacuum drying, and performing first-stage sintering in an oxygen atmosphere; the high-entropy alloy precursor solution is a metal salt solution containing aluminum, titanium, molybdenum, manganese and nickel metal ions; and S3, carrying out second-stage sintering, naturally cooling to room temperature, and grinding to obtain the high-entropy alloy coated single-crystal nickel-rich cobalt-free positive electrode material. The preparation process of the high-entropy alloy coated single crystal nickel-rich cobalt-free positive electrode material is simple, the high-entropy alloy coated layer can improve the conductivity, the power and the energy density performance, the growth of primary particles can be promoted by two-stage calcination, the rate capability is excellent, and the cycle performance is stable.

The invention discloses a preparation method and application of a nickel-cobalt oxide modified molybdenum-doped bismuth vanadate composite photo-anode, and belongs to the application field of hydrogen production through water decomposition in photoelectrochemical reaction engineering. The preparation method comprises the following steps: obtaining a Mo-BiVO4 photo-anode through an electro-deposition and calcination combined method, preparing a precursor solution containing bimetallic nickel and cobalt by using cobalt nitrate hexahydrate, nickel nitrate hexahydrate and boric acid, immersing the Mo-BiVO4 photo-anode into the precursor solution, and growing a nickel-cobalt oxide (NiCoOx) cocatalyst on the surface of Mo-BiVO4 by using a photo-assisted electro-deposition method, thereby obtaining the Mo-BiVO4 photocatalyst. According to the NiCoOx cocatalyst modified Mo-BiVO4 composite photoanode and the preparation method thereof, the photocurrent density of the optimal NiCoOx cocatalyst modified Mo-BiVO4 composite photoanode obtained by the preparation method disclosed by the invention is 5.2 times that of pure bismuth vanadate. The preparation method has the advantages of simple operation method, easily available raw materials, low economic cost and good stability.