In this research, influence of boron carbide (B₄C) particles on the corrosion behavior of magnesium metal matrix composite is examined. AZ31-B₄C composites are fabricated through ultrasonic vibration-assisted stir casting process by reinforcing varying amount of boron carbide (0.5–2 wt.%) in AZ31 alloy. Characterizations of the composites are carried out using optical microscope , scanning electron microscope (SEM) and energy-dispersive spectroscope (EDS). The optical images show equiaxed orientation of grains in fabricated composites. SEM analysis confirms uniform distribution of reinforcement particles in composites. EDAX result confirms the inclusion of B₄C particles in the Mg matrix. The microhardness of all composites and base alloy is measured using Vickers’s microhardness tester. Microhardness values are found to be increased with increase in wt.% of B₄C nanoparticles. Electrochemical corrosion tests are carried out on AZ31-B₄C metal matrix composites in 3.5% NaCl solution. AZ31-1B₄C composite is found to be the most corrosion-resistant material among tested materials. Furthermore, corrosion morphology of samples is scrutinized under SEM and EDS.

在本研究中，研究了碳化硼 (B ₄ C) 颗粒对镁金属基复合材料腐蚀行为的影响。AZ31-B ₄ C 复合材料是通过超声振动辅助搅拌铸造工艺制造的，通过在 AZ31 合金中增强不同量的碳化硼（0.5-2 wt.%）。使用光学显微镜、扫描电子显微镜 (SEM) 和能量色散光谱仪 (EDS) 对复合材料进行表征。光学图像显示了制造复合材料中晶粒的等轴取向。SEM 分析证实了复合材料中增强颗粒的均匀分布。EDAX 结果证实包含 B ₄Mg 基体中的 C 颗粒。使用 Vickers 的显微硬度计测量所有复合材料和基础合金的显微硬度。_{发现显微硬度值随着 B 4} C 纳米粒子wt.% 的增加而增加。_{AZ31-B 4} C金属基复合材料在3.5% NaCl溶液中进行电化学腐蚀试验。AZ31-1B ₄ C 复合材料被发现是测试材料中最耐腐蚀的材料。此外，在 SEM 和 EDS 下仔细检查样品的腐蚀形态。