Cr-based alloy-TiB2 micro-nano powder with high bonding degree and high sphericity degree and preparation method of Cr-based alloy-TiB2 micro-nano powder

The invention relates to a divisional application with the application number of 2020105483297, and discloses a preparation method of high-sphericity-degree Cr-based alloy-TiB2 micro-nano powder with the high bonding degree, nanoscale TiB2 powder and Cr-based alloy powder are premixed so that the nanoscale TiB2 powder and the Cr-based alloy powder can be preliminarily mixed to be uniform, then ball milling continues to be conducted so that particles of the nanoscale TiB2 powder and the Cr-based alloy powder can be further refined and mixed to be uniform, and the high-sphericity-degree Cr-based alloy-TiB2 micro-nano powder is obtained. Finally, the micro-nano powder is produced in a gas atomization treatment mode, the high-sphericity-degree Cr-based alloy-TiB2 micro-nano powder with the high combination degree is obtained, the second composite powder subjected to gas atomization treatment is smooth and compact in surface, the particle size distribution is within the narrow range of about 30-50 microns, the par