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Preparation method of multi-principal alloy powder material containing ordered nano-deposits in a structure

A multi-principal alloy, powder material technology, applied in nanotechnology and other directions, can solve the problems of difficult adjustment of components and control process, large particle size of high-entropy alloy powder, etc., to achieve easy control and good oxidation resistance. , the effect of short production cycle

Active Publication Date: 2019-11-26
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Description
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Problems solved by technology

Although the above method can produce a high-entropy alloy powder material with a simple structure, the prepared high-entropy alloy powder has a large particle size and it is difficult to adjust the composition and control the process to produce a multi-principal element metal alloy powder crystal. The structure contains such as B2, L1 2 or L2 1 ordered nanodeposits

Method used

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  • Preparation method of multi-principal alloy powder material containing ordered nano-deposits in a structure
  • Preparation method of multi-principal alloy powder material containing ordered nano-deposits in a structure
  • Preparation method of multi-principal alloy powder material containing ordered nano-deposits in a structure

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Effect test

Embodiment 1

[0026] According to the molecular formula Al 0.3 CoCrCuFeNi, weigh 0.54g of metal powder Al powder, 3.97g of Co powder, 3.56g of Cr powder, 4.28g of Cu powder, 3.76g of Fe powder, and 3.95g of Ni powder; at the same time, weigh 0.06% of the total mass of metal powder Nd Powder 0.12g, the above powder is mixed uniformly and then pressed into a cylindrical block with a diameter of 50mm and a height of 10mm as the anode material of the plasma arc furnace. Will figure 1 The shown device upper cover 1 is opened, and the above-mentioned anode material is placed in the device schematically. figure 1 In the graphite crucible 9; Tungsten metal is used as the cathode material, and a distance of 30 mm is maintained between the tungsten electrode and the anode. Cover the upper cover 1 of the device, first pass the cooling water a, and vacuumize the working chamber through the valve 3, and then pass in the argon gas b and the hydrogen gas c successively, and the volume ratio of the argon...

Embodiment 2

[0028] According to the molecular formula Al 2 CoCrCuFeNi, weigh 3.15g of metal powder Al powder, 3.45g of Co powder, 3.03g of Cr powder, 3.71g of Cu powder, 3.26g of Fe powder, 3.42g of Ni powder; 0.02g of powder B powder and 0.08g of rare earth Ce powder accounting for 0.04% of the total mass of the metal powder. Mix the above powders evenly and press them into a cylindrical block with a diameter of 50mm and a height of 10mm as the anode material of the plasma arc furnace. Will figure 1 The shown device upper cover 1 is opened, and the above-mentioned anode material is placed in the device schematically. figure 1In the graphite crucible 9; Tungsten metal is used as the cathode material, and a distance of 30 mm is maintained between the tungsten electrode and the anode. Cover the upper cover 1 of the device, first pass the cooling water a, and vacuumize the working chamber through the valve 3, and then pass in the argon gas b and the hydrogen gas c successively, and the vo...

Embodiment 3

[0030] According to the molecular formula Ta 0.65 CoCrFeNi 2.1 , Weigh 5.77g of metal powder Ta powder, 2.89g of Co powder, 2.55g of Cr powder, 2.74g of Fe powder, and 6.05g of Ni powder; simultaneously weigh 0.16g of non-metal Si powder accounting for 0.8% of the total mass of the metal powder. Mix the above powders evenly and press them into a cylindrical block with a diameter of 50mm and a height of 10mm as the anode material of the plasma arc furnace. Will figure 1 The shown device upper cover 1 is opened, and the above-mentioned anode material is placed in the device schematically. figure 1 In the graphite crucible 9; Tungsten metal is used as the cathode material, and a distance of 30 mm is maintained between the tungsten electrode and the anode. Cover the upper cover 1 of the device, first pass the cooling water a, and vacuumize the working chamber through the valve 3, and then pass in the argon gas b and the hydrogen gas c successively, and the volume ratio of the a...

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Abstract

The invention discloses a preparation method of a multi-principal element alloy powder material structurally containing ordered nano sediments, and belongs to the field of multi-principal element alloy powder materials. The preparation method is a plasma arc discharge method and comprises the following steps: uniformly mixing metal powder, non-metallic powder and rare-earth metal powder accordingto a certain ratio, compressing the mixture to obtain a block body, taking the block body as the anode material of a plasma arc furnace, adopting graphite as the cathode material, adopting argon and hydrogen as the working gas, enabling the arc starting to be carried out between the anode and the cathode under a certain current for a certain period of time, and performing passivation, so as to obtain the nanoscale or micrometer scale multi-principal element metal alloy powder material with the crystal structure containing B2 or L12 ordered nano sediments. The multi-principal element alloy powder prepared by adopting the preparation method has the characteristics of uniform chemical composition, good oxidation resistance and the like. The preparation method of the multi-principal element alloy powder material structurally containing ordered nano sediments has the benefits as follows: the reaction condition is mild, the operation is simple and convenient, the production period is short,the control is easy, the pollution to the environment is avoided, and the environmental protection is achieved.

Description

technical field [0001] The invention belongs to the field of multi-principal alloy powder materials, and in particular relates to a micron-scale or nano-scale crystal structure containing B2 or L1 prepared by a plasma arc discharge method. 2 A method for preparing a multi-principal metal alloy powder material of ordered nano deposits. Background technique [0002] High-entropy alloys (High Entropy Alloys, HEAs) is a brand-new alloy design concept, breaking through the boundaries of traditional alloys dominated by one or two metal elements, mainly composed of 5-13 kinds of principal elements and each principal element atom A new type of alloy with a fraction between 5-35%. The new alloy has high strength, high hardness, high corrosion resistance, high heat resistance, special electrical and magnetic properties and other characteristics. Due to the high entropy effect, the crystal structure of high entropy alloys is often composed of simple face-centered cubic (FCC), body-ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/12B22F9/14B82Y40/00C22C1/02C22C30/02C22C30/00
CPCB22F9/12B22F9/14B82Y40/00C22C1/02C22C30/00C22C30/02
Inventor 冒爱琴权峰刘敏丁赔赔赵慧慧江用文俞海云郑翠红
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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