High‐purity Ti_0.2Zr_0.8B₂ solid‐solution nanopowders were successfully synthesized via a molten salt assisted borothermal reduction at 1323‐1373 K using ZrO₂, TiO₂ and amorphous B as starting materials. The Ti_0.2Zr_0.8B₂ solid‐solution nanopowders synthesized at 1323 K show the largest specific surface area of 12.24 m²/g and the lowest equivalent average particle size of 86 nm. Meanwhile, they exhibit the high compositional uniformity and the good single‐crystal hexagonal structure. This study provides a new method to synthesize the high‐purity solid‐solution nanopowders of the transition‐metal borides.

中文翻译：

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熔融盐辅助硼热还原法合成Ti0.2Zr0.8B2固溶纳米粉

以ZrO ₂，TiO ₂和无定形B为原料，通过熔融盐辅助的硼热还原在1323–1373 K上成功合成了高纯度Ti _0.2 Zr _0.8 B ₂固溶纳米粉。在1323 K上合成的Ti _0.2 Zr _0.8 B ₂固溶纳米粉体的最大比表面积为12.24 m ² / g，最低等效平均粒径为86 nm。同时，它们表现出高的组成均匀性和良好的单晶六边形结构。这项研究为合成过渡金属硼化物的高纯度固溶纳米粉提供了一种新方法。