A comparative study on the microstructure, rate-dependent compressive behavior, and ballistic performance of commercially available pressureless sintered boron carbide-titanium diboride (material Z) and hot-pressed boron carbide (material S) was conducted. Under quasi-static compression at rates of 1.4 to 1.6 x 10^-4 s^-1, the strength was found to be 3.07 $\pm$ 0.11 GPa for Z and 4.72 $\pm$ 0.14 GPa for S. At dynamic strain rates ranging from 185 to 1152 s^-1, the compressive strength ranged from 3.56 to 4.07 GPa for material Z and 5.24 to 5.97 GPa for material S. Depth of penetration testing was performed using 7.62 mm AP M2 projectiles. The normalized ballistic efficiency of the two materials were found to be comparable at 932 m/s, while material S was superior to material Z at an impact velocity of 1078 m/s. Based on post-mortem SEM analysis of ballistic tile fragments, the inferior mechanical properties and ballistic performance of material Z are attributed to an uneven distribution of silicon impurities and a significant level of porosity.

对市售的无压烧结碳化硼-二硼化钛（材料Z）和热压碳化硼（材料S）的微观结构，速率相关的压缩行为和弹道性能进行了比较研究。在1.4到1.6 x 10 ^-4 s ^-1的准静态压缩下，强度为3.07$\pm$ Z和4.72的0.11 GPa $\pm$S的密度为0.14 GPa。在185至1152 s ^-1的动态应变速率下，材料Z的抗压强度范围为3.56至4.07 GPa，材料S的抗压强度范围为5.24至5.97 GPa。使用7.62 mm AP M2进行渗透深度测试弹丸。发现两种材料的归一化弹道效率在932 m / s时相当，而在冲击速度为1078 m / s时，材料S优于材料Z。根据弹道碎片的验尸SEM分析，材料Z的较差的机械性能和弹道性能归因于硅杂质分布不均和显着的孔隙度。