This article presents the mechanical, physical, and tribological properties of the boron carbide (B₄C) reinforced epoxy matrix composites (BEMCs). The BEMC samples were prepared with various B₄C concentration of 0%, 1%, 2%, 3%, and 5%. B₄C particles were treated with a silane coupling agent to ensure efficient adhesion with epoxy. The influence of a range of parameters (particle loading, sliding speed, sliding distance, and normal load) on the wear and friction behavior of BEMCs were evaluated by conducting wear tests under dry sliding conditions on a pin-on-disc wear test set-up. The addition of B₄C to the epoxy polymer improved the wear resistance of the composites. Maximum wear resistance and coefficient of friction were observed for the composite with the highest percentage of B₄C (5%). The specific wear rate was reduced on increasing load and sliding distance and increased with the sliding velocity. Mechanical properties including compression strength, flexural strength, and impact energy, along with physical properties such as density and hardness, were also evaluated. B₄C particles improved the hardness, density, flexural and compression strength, and impact resistance of the composites. Scanning electron microscope (SEM) analysis of the worn-out surfaces and flexural fractured surfaces was carried out to predict the possible wear and fracture mechanisms. Micro-ploughing, abrasion, and adhesion were the wear mechanisms in BEMCs. Under the flexural loads, particulate de-bonding, pull-out, and brittle fracture of the matrix were the governing failure mechanisms.

本文介绍了碳化硼 (B ₄ C) 增强环氧树脂基复合材料 (BEMC)的机械、物理和摩擦学性能。BEMC 样品制备为具有0%、1%、2%、3% 和 5% 的各种 B ₄ C 浓度。B ₄ C 颗粒用硅烷偶联剂处理以确保与环氧树脂的有效粘合。一系列参数（颗粒载荷、滑动速度、滑动距离和法向载荷）对 BEMC 磨损和摩擦行为的影响通过在销-盘磨损试验装置上进行干滑动条件下的磨损试验来评估 -向上。B _{4 的添加}C到环氧聚合物提高了复合材料的耐磨性。对于具有最高百分比的 B ₄ C (5%)的复合材料，观察到最大的耐磨性和摩擦系数。比磨损率随着载荷和滑动距离的增加而降低，并随着滑动速度的增加而增加。还评估了机械性能，包括压缩强度、弯曲强度和冲击能量，以及物理性能，例如密度和硬度。乙₄C颗粒提高了复合材料的硬度、密度、弯曲和压缩强度以及抗冲击性。对磨损表面和弯曲断裂表面进行扫描电子显微镜 (SEM) 分析，以预测可能的磨损和断裂机制。微耕、磨损和粘附是 BEMC 的磨损机制。在弯曲载荷下，基体的颗粒脱粘、拉出和脆性断裂是主要的失效机制。