Prealloyed 3D formed high-entropy alloy porous material and preparation method thereof

Abstract

The invention provides a prealloyed 3D formed high-entropy alloy porous material and a preparation method thereof. The prealloyed 3D formed high-entropy alloy porous material comprises CrMoNbTaV, theporous material adopts high-entropy alloy powder as a raw material, a three-dimensional grid structure is used as a frame, and a porous sintered body sintered by the high-entropy alloy powder is nested inside the porous material. According to the scheme, the high-entropy alloy powder produced by an atomization method is uniform in chemical composition and fine in crystallization, and high-qualitypowder raw materials are provided for preparing a high-performance porous filtering material by powder metallurgy at the rear; and moreover, the prepared porous material has good physical and chemicalstability and good corrosion resistance, and provides stable guarantee for subsequent filtration. The open porosity is high, the specific surface area is large, the sintering time is shortened on a large scale, the corrosion resistance and the oxidation resistance are high, the chemical stability and the mechanical strength are good, the self-corrosion is not easy, the process is simple and environment-friendly, and the batch production can be realized.

Description

technical field [0001] The invention relates to the technical field of porous materials, in particular to a pre-alloyed 3D formed high-entropy alloy porous material and a preparation method thereof. Background technique [0002] Porous materials have the advantages of low density, large specific surface area, good air permeability, and large adsorption capacity, and are widely used in filtration, noise reduction, heat insulation, and catalysis in petrochemical, metallurgy, medicine, environmental protection, and machinery industries. [0003] Since the industrial revolution, especially metal porous materials have been favored by people. Metal porous materials are mostly used for liquid-solid separation, gas-solid separation, damping, sound absorption, heat dissipation, energy absorption, electromagnetic shielding, flame retardant, filtration, and other functions. Therefore, porous materials are used in electrolysis of hydrogen, filtration, separation, Surface combustion, sh...

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Problems solved by technology

[0006] However, using the traditional processing method, the billet needs to be made during the processing process. The manufacture of the billet requires high-pressure extrusion forming. Due to the different extrusion directions during the forming process, the billet is prone to uneven distribution of metal powder particles, and it is easy to appear after sintering. The appearance of cracks and uneven porosity will seriously affect the structural strength of porous materials