Effect of Speed on the Tribological Behavior of Fe–Cu–C Based Self Lubricating Composite

  • Sanjay Mohan Sharma
  • Ankush Anand
Technical Paper


In this work, the effect of different speeds on the tribological properties of sintered iron–copper–graphite (Fe–Cu–C) based self lubricating composites have been studied. Fe–Cu–C based self-lubricating composites were prepared by powder metallurgical compaction and sintering method. CaF2, a solid lubricant in weight percentages of 0, 3, 6, 9 and 12 was added to the base matrix consisting of Fe-2Cu-0.8C. The fabricated samples were tested for friction and wear at a constant load of 10 N and three different speeds of 0.5, 5 and 10 m/s. The surface properties of unworn and worn surfaces were analyzed using optical and scanning electron microscope. The friction and wear test of the composites exhibited decrease in coefficient of friction and increase in wear loss with the increase in speed. The results also revealed different trends in the friction behavior of the developed composites at low (0.5 m/s) and high speeds(5 and 10 m/s). However, at all test speeds, COF of samples with 3, 6 and 9 wt.% was less than the base matrix, and wear loss of 3 wt.% CaF2 sample was the lowest at all speeds. Ploughing, adhesive and delamination wear were the dominant wear mechanism as revealed by SEM. Based upon the findings, the developed material could be used for low and high speed antifriction applications.


Fe–Cu–C Wear Friction Speeds Solid lubricant CaF2 Powder metallurgy 



The authors acknowledge the staff of Mechanical Engineering Department, Shri Mata Vaishno Devi University, Katra, J&K, India for their support in carrying out this study. We also extend our gratitude to Metallurgical Products India Pvt. Limited (Maharashtra) and Timcal Ltd.(Maharashtra) for providing Calcium Fluoride and graphite powders for carrying out this research. We acknowledge the help forwarded by CIFC- BHU, India for carrying out SEM microscopy.


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Copyright information

© The Indian Institute of Metals - IIM 2017

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringShri Mata Vaishno Devi UniversityKatraIndia

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