Single-phase high-entropy metal carbonitride (HECN) powders, namely (HfZrTaNbTi)(C,N), were successfully synthesized via a facile high-energy ball milling assisted carbothermal reduction nitridation at the temperature above 1400 °C in a flowing N₂ atmosphere for the first time. The as-prepared HECN powders had a single-crystalline structure of metal carbonitride and simultaneously possessed high compositional uniformity. The increasing temperature from 1400 °C to 1600 °C promoted the grain growth of HECN powders from 0.31 μm to 1.26 μm. The low oxygen content of 0.494 wt% was obtained for as-prepared HECN powders at 1600 °C. This work is the first report of preparing a high-entropy metal carbonitride powders using metal oxides and carbon as raw materials.

通过在1400°C以上的流动性N _2中，通过简便的高能球磨辅助碳热还原氮化，成功地合成了单相高熵金属碳氮化物（HCN）粉末（HfZrTaNbTi）（C，N）。第一次的气氛。所制备的HECN粉末具有金属碳氮化物的单晶结构，同时具有高的组成均匀性。温度从1400°C升高到1600°C促进了HECN粉末的晶粒生长，从0.31μm增加到1.26μm。对于所制备的HECN粉末，在1600℃下获得0.494wt％的低氧含量。这项工作是有关以金属氧化物和碳为原料制备高熵金属碳氮化物粉末的首次报道。