Structure and Properties of the Boron Carbide Powder Obtained by the Mechanochemical Synthesis of the Carbon Char and Amorphous Boron Mix

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Abstract—The structure and the physicochemical properties of boron carbide powders obtained by the mechanochemical synthesis of the carbon char and amorphous boron mix by applying the methods of the X-ray phase analysis (XPA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and chemical analysis were investigated. On the basis of the X-ray phase analysis, it was found that full transformation of the original materials (carbon char and amorphous boron (B₄C) takes place during the mechanical treatment of the mix for 30–60 min. Judging by the micro-electron diffraction pattern of the B₄C obtained by the mechanical synthesis, the product of synthesis was amorphized and it contained some inclusions of the crystal phase.