High-entropy alloy powder for 3D (three-dimensional) printing and method for preparing high-entropy alloy coating by using high-entropy alloy powder

Abstract

The invention provides high-entropy alloy powder for 3D (three-dimensional) printing and a method for preparing a high-entropy alloy coating by using the high-entropy alloy powder, and belongs to the technical field of coating preparation. By the high-entropy alloy powder, the wear resistance of the existing powder materials for 3D printing is improved. The high-entropy alloy powder is prepared by using the following ingredients in atomic percentage by weight: 16%-25% of Ni, 16%-25% of Co, 16%-25% of Cr, 16%-25% of Ti and 16%-25% of V. The preparation method comprises the following steps of (1) performing ball-mill mixing on raw materials to obtain mixed powder; (2) grinding and cleaning a matrix; and (3) placing the mixed powder in a powder feeder of 3D printing equipment and sintering the mixed powder on the surface of the matrix to form the high-entropy alloy coating by using selective laser. The NiCoCrTiV coating is prepared by selective laser sintering and has the advantages of high hardness, wear resistance, corrosion resistance and the like. The high-entropy alloy powder for 3D printing and the method for preparing the high-entropy alloy coating by using the high-entropy alloy powder can be widely used in the field of 3D printing.

Description

technical field

[0001] The invention belongs to the technical field of coating preparation, and in particular relates to a high-entropy alloy powder used for 3D printing and a method for preparing a high-entropy alloy coating. Background technique

[0002] High-entropy alloys have higher entropy values ​​and the characteristics that atoms are not easy to diffuse, and it is easy to obtain solid solution phases and nanostructures with high thermal stability, and even amorphous structures, and their performance is superior to traditional alloys. Multicomponent high-entropy alloys are a newly developed alloy system with high academic research value and great potential for industrial development. Similarly, the high-entropy alloy coating also has good high-temperature oxidation resistance and corrosion resistance, and is a potential high-performance coating system that can be used in some harsh environments.

[0003] 3D printing, a type of rapid prototyping technology, is a tech...

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