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

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.