In this study, the effect of adding different forms of carbon such as graphite flakes (GF), graphene nano-platelets (GNP) and carbon nanotubes (CNT) on the microstructure evolution and wear behavior of CoCrFeMnNi multi-component alloy fabricated by mechanical alloying and spark plasma sintering were investigated. Carbon addition of 2 wt% decreased the particle size and the amount of WC contamination due to milling. Post sintering, the phases observed in all the compacts were Ni-rich FCC, Cr-rich M₇C₃, Cr₃C₂ and MnO. Carbon addition resulted in coarser microstructure and higher amount of secondary phases like M₇C₃, MnO, and Cr₃C₂ resulting in higher hardness_. Ball-on-disk wear tests at room temperature showed that the GNP added alloy showed the highest specific wear rate (3.26 mm³/Nm) in spite of highest hardness. The predominant wear mechanism observed for all the alloys were oxidative wear and abrasive wear which were more prominent for the FCC phase. The CNT and GF added CoCrFeMnNi alloy exhibited the least specific wear rates of 0.85 and 0.96 mm³/Nm, respectively compared to 2.77 mm³/Nm for the base alloy. The wear behavior was explained based on microstructure and composition of the phases.

在这项研究中，添加不同形式的碳，如石墨片 (GF)、石墨烯纳米片 (GNP) 和碳纳米管 (CNT) 对机械合金化制备的 CoCrFeMnNi 多组分合金的微观结构演变和磨损行为的影响和放电等离子烧结进行了研究。添加 2 wt% 的碳降低了颗粒尺寸和由于研磨造成的 WC 污染量。烧结后，在所有压块中观察到的相是富镍 FCC、富铬 M ₇ C ₃、Cr ₃ C ₂和 MnO。添加碳导致更粗的微观结构和更多的第二相，如 M ₇ C ₃、MnO 和 Cr ₃ C ₂导致更高的硬度_。室温下的球盘磨损试验表明，尽管硬度最高，但添加 GNP 的合金表现出最高的比磨损率 (3.26 mm ³ /Nm)。观察到的所有合金的主要磨损机制是氧化磨损和磨料磨损，这在 FCC 相中更为突出。与基础合金的2.77 mm ³ /Nm相比，添加 CNT 和 GF 的 CoCrFeMnNi 合金表现出最低的比磨损率，分别为 0.85 和 0.96 mm ³ /Nm 。基于相的微观结构和组成来解释磨损行为。