7results about How to "Solve segregation" patented technology

The invention discloses pipeline steel for carbon dioxide conveying and a production method thereof, and relates to the technical field of steel production, and the pipeline steel comprises the following chemical components in percentage by mass: 0.03%-0.07% of C, 0.10%-0.40% of Si, 1.00%-1.40% of Mn, less than or equal to 0.013% of P, less than or equal to 0.0020% of S, 0.030%-0.070% of Nb, less than or equal to 0.010% of V, 0.008%-0.030% of Ti, 0.20%-0.40% of Cr, 0.10%-0.30% of Ni, 0.05%-0.15% of Mo, less than or equal to 0.010% of Cu, 0.015%-0.055% of Al, less than or equal to 0.00050% of B, 0.0006%-0.0030% of Ca, less than or equal to According to the invention, a structure form taking bainite as a main component is realized, and the performance requirement of a product is met.

The invention discloses an aluminum-magnesium co-doped cobalt carbonate precursor as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively preparing a cobalt-aluminum mixed solution and a magnesium-containing precipitant solution; and adding the cobalt-aluminum mixed salt solution and the magnesium-containing precipitant solution into a base solution, and carrying out a co-precipitation reaction to obtain the aluminum-magnesium co-doped cobalt carbonate precursor. According to the method disclosed by the invention, the magnesium element is introduced into the precipitant solution in advance, so that magnesium ions can be complexed with the precipitant in advance, and the problems of nonuniform doping and segregation caused by difficult control of the precipitation rate of magnesium in the doping process are solved. According to the aluminum-magnesium co-doped cobalt carbonate precursor prepared by the method, magnesium and aluminum are uniformly doped, and the cycling stability of a lithium cobalt oxide battery can be effectively improved.

The invention discloses a (Ti, W) C-AlCrCoNiMo high-entropy metal ceramic material as well as a preparation method and application thereof, and belongs to the technical field of metal ceramic materials. The invention provides a metal ceramic material which is prepared by taking (Ti, W) C ceramic as a matrix, adding Al, Cr, Co, Ni and Mo as a high-entropy alloy binding phase, carrying out two-step wet-dry composite ball milling process treatment and carrying out spark plasma coupling high-frequency induction sintering. The problem of segregation can be solved after two-step wet-dry composite ball milling process treatment, ideal pre-alloyed powder is obtained, the components are more uniform, the dispersity is better, and the composite powder treated by an optimized ball milling method is sintered through spark plasma coupling high-frequency induction. And the high-entropy metal ceramic material with high bending strength, high hardness and excellent fracture toughness can be obtained at the sintering temperature of 1300 DEG C.

The present application belongs to the technical field of sintering mixed material batching, and relates to a method for reducing particle size segregation of mixed material in a multi-stage flat laying manner. According to the required batching ratio, each kind of material is divided into 3-4 stages according to particle size, the first stage is for the material with the largest particle size and the most segregation, the second stage is for the dust removal ash with fine particle size and large dust, and the third and fourth stages are for the material with uniform particle size. Before taking the material, the head and tail cutting operation is implemented, and the mixed material in this area is returned to the top of the new pile. The present application adopts the segmented flat laying manner, solves the particle size segregation, adds the dust removal ash in the second stage, and solves the problem of dust diffusion. Each bin can be used alternately, solving the problem of the number of bins. At the same time, small materials can be added in a certain stage, realizing the recycling of iron-containing resources.

The application discloses a copper alloy material with super-high strength and high conductivity and a preparation method thereof. The copper alloy material is composed of the following components in percentage by mass: Ni: 5-13 wt.%, Sn: 6-14 wt.%, Sn:(Ni+Sn)=40-70 wt.%, M: 0.01-0.5 wt.%, and the rest is Cu, wherein the M is at least one selected from In, Al, Cr, V, Mn and Fe. The preparation process comprises the following steps: performing multi-stage homogenization treatment on a columnar crystal ingot with the above components, obtaining a super-fine crystal structure by performing cycle 'processing-current treatment' on the homogenization-treated ingot, and performing processing-aging treatment. The copper alloy material provided by the application has super-high hardness, tensile strength and good conductivity.

The invention relates to a carbon-based conductive binding material, a preparation method thereof and application of the carbon-based conductive binding material in an electrochemical device, and the carbon-based conductive binding material comprises a carbon-based material matrix and a polymer branch chain which is grafted on the surface of the matrix and has a binding functional group, and the bonding functional group is selected from any one or a combination of at least two of a fluorine group, a hydroxyl group, a carboxyl group, an ether group, a phenyl group, a cyano group or an imide group. According to the carbon-based conductive binding material provided by the invention, the dispersity of an electrode system is improved, a more stable electronic conductive network is constructed in an electrode while a binding effect is given to the electrode system, functional coupling of a binding agent and a conductive agent is realized, and the conductivity of the electrode system is improved. The energy density of the battery cell and the energy density, the rate capability and the cycling stability of the electrochemical device applying the battery cell are further improved.

The invention relates to a copper-iron alloy material and a preparation method thereof, and the copper-iron alloy material comprises the following components in percentage by weight: 9-17% of Fe, 0.05-0.1% of Nb, 0.1-0.2% of WC, 0.02-0.04% of Mg, and the balance of Cu and inevitable impurities. The preparation method comprises the following steps: induction melting; performing hot forging treatment; performing peeling treatment; cold forging treatment; annealing treatment; pickling treatment; and cold forging treatment. The trace Mg element plays a role in further deoxidation, and the situation that the mechanical and electrical properties are reduced due to the fact that the oxygen content of the alloy material is too high is avoided; the trace Nb serves as the core of heterogeneous nucleation, grain refinement is facilitated, and the low-content Nb basically does not affect the conductivity of the alloy; and the trace WC particles can further strengthen the matrix and improve the high-temperature softening resistance of the alloy. In addition, the problem of segregation of Fe and WC is solved by adopting a spray deposition process, and the method is simple in process, high in production efficiency and easy to apply to industrial production.