Publication

Abstract : Self-lubricating metal matrix composites (MMCs) are replacing many conventional materials that are used in automotive, aerospace and marine applications due to superior wear resistance. The objective of this work is to investigate the effect of reinforcing solid lubricant—Molybdenum Disulfide (MoS2), hard ceramic particles of Zirconia (ZrO2) and metallic particles of Nickel (Ni) into base Al 7075. The hybrid Al-MMC is fabricated using stir casting process. The total weight percentage of MoS2, ZrO2 and Ni are varied by 10, 20 and 30%. Maximum hardness is obtained in the case of 30% reinforcement and is 137% of its base Al 7075. Dry sliding wear tests are conducted to know the effect on wear rate. The wear rate was reduced by 58.94% in the case of minimum wear condition for 30% reinforcement. SEM, EDS and XRD were done and the presence of reinforcing particles was confirmed. © 2019, Springer Nature Singapore Pte Ltd.