Seeking to fabricate B₄C composites that are even more superhard (>30 GPa) at lower cost, B₄C was transient liquid-phase assisted spark-plasma-sintered, somewhat counterintuitively, at lower temperature (<1750 °C) and with greater MoSi₂ aid content (>15 vol.%) than ever before. It was found that just 20 vol.% MoSi₂ aid enables the full densification of B₄C at 1700 °C, thereby avoiding the deleterious transformation β-MoB₂→α-MoB₂, having consumed the entire MoSi₂ to form MoB₂ and SiC. This maximizes the hardness (∼33 GPa) of these novel triplex-particulate B₄C-SiC-MoB₂ composites without penalizing their toughness (∼4.1 MPa⋅m^0.5). Also importantly, the dry sliding-wear of these novel composites was investigated for the first time, showing that they undergo only mild wear (specific wear rate of ∼10⁻⁸ mm³/(N⋅m)) by plasticity-dominated two-body abrasion. Moreover, it was demonstrated that they are much more wear resistant than porous B₄C monolithics fabricated under both the same and more demanding conditions, and at least as equally wear resistant as fully-dense B₄C monolithics and composites fabricated under more demanding conditions.

为了以更低的成本制造更超硬 (>30 GPa) 的B ₄ C 复合材料，B ₄ C 是瞬态液相辅助火花等离子体烧结，有点违反直觉，在较低温度 (<1750 °C) 和比以往更高的 MoSi ₂助剂含量 (>15 vol.%)。发现仅 20 vol.% MoSi ₂助剂就能够在 1700 °C 下完全致密化 B ₄ C，从而避免有害转变 β-MoB ₂ →α-MoB ₂，消耗了整个 MoSi ₂以形成 MoB ₂和碳化硅。这最大限度地提高了这些新型三重颗粒 B ₄ C-SiC-MoB ₂的硬度 (~33 GPa)复合材料而不损害其韧性（~4.1 MPa⋅m ^0.5）。同样重要的是，首次研究了这些新型复合材料的干滑动磨损，表明它们仅经历了由塑性主导的双体结构造成的轻度磨损（比磨损率为 ~10 ^-8 mm³/(N⋅m)）。磨损。此外，已证明它们比在相同和更苛刻条件下制造的多孔 B ₄ C 整体材料耐磨得多，并且至少与在更苛刻条件下制造的全致密 B ₄ C 整体材料和复合材料一样耐磨.