Molybdenum boride is an ideal hard and wear‐resistant material. In this study, a new method is proposed for preparing molybdenum boride, by which Mo first reacts with B₄C to generate the mixture of molybdenum boride and C, and then the product is decarburized by molten Ca to generate CaC₂. Pure molybdenum boride could be obtained after acid leaching to remove the by‐product CaC₂. According to the experimental and thermodynamic calculation results, it is concluded that the single‐phase MoB could be successfully prepared, while Mo₂B, Mo₂B₅, and MoB₄ could not be synthesized by this method. Moreover, it was found that the particle size of finally prepared MoB is determined by particle size of raw Mo powder. The residual carbon content of the product could be decreased to 0.10 wt% after first reaction at 1673 K for 6 hours and then decarburization reaction at 1673 K for 6 hours.

中文翻译：

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从钼和碳化硼制备硼化钼粉末的简便途径。

硼化钼是一种理想的硬质耐磨材料。在这项研究中，提出了一种制备硼化钼的新方法，该方法首先使Mo与B ₄ C反应生成硼化钼和C的混合物，然后通过熔融的Ca将产品脱碳以生成CaC ₂。酸浸去除副产物CaC ₂后可获得纯的硼化钼。根据实验和热力学计算结果，得出可以成功制备单相MoB的结论，而Mo ₂ B，Mo ₂ B ₅和MoB ₄可以成功制备。用这种方法无法合成。此外，发现最终制备的MoB的粒径由粗制Mo粉末的粒径决定。在1673 K下首先反应6小时，然后在1673 K下进行6小时脱碳反应后，产品的残留碳含量可降低至0.10 wt％。