297 results about "Mn element" patented technology

The invention discloses an F, Mn co-doping deposition nano-SnO2 transparent heat insulating thin film, wherein the F, Mn element co-doping effect is utilized to increase the number charge carriers in the thin film material, thus increasing the index of thin film reflection to infrared rays. The invention can prevent the excess doping of one single element, it can be applied to chemical CVD or supersonic spraying thermal dissociation deposition.

The invention discloses a method for preparing a nano-scale lithium ion battery anode material. The anode material is LiNixCoyMnzO2(x+y+z=1). The method comprises: dissolving compounds which contain Li, Ni, Co and Mn elements in deionized water, fully mixing the mixture to obtain uniform mixed solution, adding solution of precipitator into the mixed solution, transferring the mixed solution into a water / oil bath pot to heat the mixed solution to perform a reaction fully to obtain a LiNixCoyMnzO2(x+y+z=1) precipitate, filtering the reaction solution, washing the precipitate, drying the precipitate by spraying, and sintering the precipitate in the air at a high temperature to obtain the LiNixCoyMnzO2(x+y+z=1) anode material of which the primary particle size is of nano scale. In the invention, the LiNixCoyMnzO2(x+y+z=1) anode material for alpha-NaFeO2 type lithium ion batteries, of which the primary particles have a nano spherical polymer structure, is prepared by combining co-precipitation and spray drying, the active ingredients are mixed uniformly, the activities of the reactants are high, the reaction time and reaction temperature are reduced, the obtained product is of the nano scale and the particle size distribution of the product is uniform.

The invention belongs to the technical field of the lithium ion battery material preparation, and specifically relates to a preparation method of a nickel-cobalt-manganese ternary material enabling element content in gradient distribution. The chemical formula of the positive material is LiNixCoyMnzO2, x is not less than 0.5 and not more than 0.9, and the sum of x, y and z is equal to 1. The preparation process disclosed by the invention is based on co-precipitation method principle, the concentration of the metal ion entering the reaction kettle is continuously changed by changing the feedingway, the Mn element concentration is gradually increased, the concentration of each of the Ni element and the Co element is gradually reduced, thereby synthesizing the nickel-enriched positive material precursor particle with gradiently increased Mn element content and gradiently reduced Ni element content from center to the surface, and finally the nickel-enriched positive material with elementsin gradient distribution is formed by calcining the nickel-enriched positive material precursor particle with the lithium source in a mixed way. The full-gradient material is obviously different fromthe material with uniformly distributed elements from inside to outside and synthesized through the common co-precipitation method, and the higher specific capacity and good circulating performance and heat stability are provided.

The invention discloses application of high-entropy alloy powder to laser cladding; the high-entropy alloy powder consists of Fe, Ni, Cr, Al, Cu and Mn element powder; the composition is represented as FeNiCrAlCuMnx; and x is the mol ratio of Mn, and has a value range of 0-1. All the components are fully and uniformly mixed after accurate weighing of respective mass according to respective mol ratios; and the high-entropy alloy powder and ethanol are uniformly coated on the surface of a basal body material after the mixing, and are dried for laser cladding to obtain a cladding layer. According to the high-entropy alloy powder in laser cladding, the cladding layer with excellent formability is obtained through material surface modification to improve the material hardness and wear resistance.

The invention belongs to the technical field of aluminum alloy processing, and relates to a 6082S aluminum alloy sheet for stamping and a processing technology thereof. The 6082S aluminum alloy sheetis prepared from the following elements of, in percentage by weight, 0.9-1.2% of Si, 0.1-0.25% of Fe, less than or equal to 0.1% of Cu, 0. 5-0.6% of Mn, 0.8-1.1% of Mg, less than or equal to 0.1%of Cr, less than or equal to 0.1% of Zn, 0.01-0.02% of Ti, less than or equal to 0.05% of a single impurity, less than or equal to 0.15% of total impurities, and the balance Al. The defect that the existing 6082 aluminum alloy is wide in range is solved, due to the existence of Fe and Mn elements in the alloy, micron-scale AlFeSi, AlMnSiFe and Al6Mn phases are often separated out in the solidificationprocess, the coarse one-time solidification phases is hard and brittle, is difficult to dissolve in an aluminum matrix in subsequent homogenization and solid solution treatment, in the stamping process, a crack source can be easily formed, so that stamping cracking is caused; by controlling the component range of 6082 aluminum alloy, a thin plate with good stamping performance is obtained.

The invention discloses a method for quantitatively examining the center segregation of a wire rod. The method comprises the following steps: taking two wire rod samples, rubbing down the cross section of one of the wire rod samples, splitting the other sample at the 2 / 3 position along the vertical direction of the wire rod sample, rubbing down the profile of the lager sample, putting the two rubbed surfaces next to each other in a same plane, inlaying through using a conductive resin, grinding the samples, polishing the plane when the width of the vertical profile of the wire rod sample is equal to the diameter of the other wire rod sample, and corroding the samples through using an alcohol solution of nitric acid; marking through drawing a line at the severest segregation position, and polishing the samples; and putting the samples in an electronic probe analyzer, finding the made mark through using a secondary electron image, carrying out C and Mn element X-ray intensity line analysis measurement of the full width of the samples through utilizing element characteristic X-ray spectrum analysis under an acceleration voltage of 10-20kV, an electron beam current of above 100nA and a beam spot dimension of 20-50mum, recording through using curves, testing the X-ray intensities of a standard sample of the analytic elements under same test conditions, converting the X-ray intensities in the curves into concentration contents, obtaining maximum concentrations and average concentrations from the curves, and obtaining the center segregation rates through calculating according to a formula of the center segregation rate=(the maximum value / the average value)*100%.

The present invention relates to a evaporative pattern casting special-purpose magnesium alloy and its smelting method. It is characterized by that in the formula of magnesium alloy the content of zinc is reduced, the contents of Al and Mn elements are properly regulated, and the mixed rare earth RE richly containing Ce and elements of Ti and C are added so as to fine the crystal grains of evaporative pattern casting magnesium alloy, reduce its dispersed shrinkage defect and improve its casting property and mechanical property.

The invention discloses an aluminum clad manganese-base laminated composite lithium ion battery cathode material and a preparation method thereof. According to the anode material, aluminum salt is coated on an outer surface of a manganese-base cathode material with a laminated structure in a chemical formula of Li(LixMn1-y-zM1yM2z)O2. The preparation method comprises the following steps of: (1) preparing a mixture; (2) sintering and treating powder; (3) preparing a corresponding amount of soluble aluminum salt, adding the soluble aluminum salt into the manganese-base laminated cathode material, and uniformly stirring; (4) preparing a NH3.H2O solution, a NH4F solution or a NH4H2PO4 solution, adding the solution into slurry of aluminum nitrate and the manganese-base laminated cathode material, and uniformly stirring; and (5) drying the slurry obtained in the step (4), and sintering at the temperature of between 400 and 800 DEG C for 5 to 15 hours. The aluminum clad manganese-base laminated composite lithium ion battery cathode material has high capacity, low first charging voltage platform and excellent long cycle performance, takes an Mn element as a basis, and is low in raw material cost and particularly suitable for preparing large batteries such as batteries of electric vehicles.