Six‐principal‐component high‐entropy IVB–VB diborides: Low‐temperature synthesis, microwave absorption, and mechanisms

• DOI: 10.1111/jace.20350
• Publication Date: 2025-01-07T15:50:21Z
• Authors: Jianghao Liu; Delei Liu; Junfeng Gu; Haijun Zhang; Liang Huang; Zhong Huang; Shaowei Zhang

Abstract Owing to their outstanding performances significantly superior that of the low‐ and medium‐entropy counterparts, high‐entropy diborides attracted extensive attention. Nevertheless, rising configuration entropy rendered not only better but also greater formation difficulty due strengthened sluggish‐diffusion effect. Herein, (Hf 0.167 Zr Ti Ta Nb V )B 2 , as first reported six‐principal‐component IVB–VB transition‐metal diborides, was successfully synthesized by a microwave molten‐salt co‐assisted thermal‐reduction method, under temperature conditions (1400°C/20 min) remarkably milder than required conventional method for synthesizing diborides. More importantly, as‐synthesized diboride powders exhibited high composition uniformity, single‐crystalline nature hexagon‐platelet‐like morphology. Furthermore, absorption performance demonstrated be favorable enhancing its synthesis self‐assembly producing unique micro‐zone hot‐spot This research predicted promote development synthetic technique dramatically expand membership materials.