Textured high-entropy boride ceramics, prototypically (Hf_0.2Zr_0.2Ta_0.2Cr_0.2Ti_0.2)B₂, with nearly single phase were fabricated for the first time by spark plasma sintering (SPS) of the corresponding powder, which was derived from boron/carbothermal reduction. Lotgering orientation factor calculation and the pole figures revealed that the c-axis of high-entropy boride grains aligned parallel to the SPS pressing direction after sintering and grains grew along the a,b-axis to form platelet-like morphology. The remarkably high Vickers’ hardness of ∼29 GPa was observed on both of the side surface and the top surface of textured ceramics. The surface perpendicular to the SPS pressing direction demonstrated an improved fracture toughness owing to the oriented elongated grains.

通过火花等离子烧结（SPS）首次从硼中提取出相应粉末，首次制造出具有近似单相的织构化高熵硼化物陶瓷，原型为（Hf _0.2 Zr _0.2 Ta _0.2 Cr _0.2 Ti _0.2）B ₂。 /碳热还原。洛格取向因子的计算和极图显示，高熵硼化物晶粒的c轴在烧结后平行于SPS压制方向排列，并且晶粒沿a，b方向生长轴形成血小板样形态。在纹理陶瓷的侧面和顶面都观察到了高达29 GPa的维氏硬度。垂直于SPS压制方向的表面由于取向的细长晶粒而表现出改善的断裂韧性。