The research was aimed for improving the mechanical properties of reaction bonded boron carbide (RBBC) through use of two boron carbide (B₄C) powders in the initial preform. Experimental results show that the Young’s modulus, Knoop hardness, and flexural strength of RBBC, produced with the combination of two powders, are greater by ∼15.2%, ∼33.8% and ∼15.5%, respectively, compared to that produced with single, i.e. fine B₄C powder. The increase in ceramic phase (B₄C and B₄C +SiC) and reduction in residual Si content in the RBBC produced with mixed powders lead to an enhancement in its mechanical properties. Both RBBC exhibit indentation size effect and such characteristics are corroborated by their respective brittleness index.

该研究旨在通过在初始预成型件中使用两种碳化硼 (B _{4 C) 粉末来提高反应结合碳化硼 (RBBC) 的机械性能。}实验结果表明，与单一粉末相比，两种粉末组合生产的 RBBC 的杨氏模量、努氏硬度和抗弯强度分别提高了 ~15.2%、~33.8% 和~15.5%，即精细的 B ₄ C 粉末。用混合粉末生产的 RBBC 中陶瓷相（B ₄ C 和 B ₄ C +SiC）的增加和残余 Si 含量的减少导致其机械性能的提高。两种 RBBC 都表现出压痕尺寸效应，并且这些特征由它们各自的脆性指数证实。