• Wear and thermal resistance properties of aluminium particulate microcomposites

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Wear; thermal properties; microstructures; infrared spectrograph; composite.

    • Abstract


      Wear resistance and thermal stability are not fundamental properties of materials, but their effects are inevitable in applications involving two-body contact because of friction-induced wear and heat. Wear resistance andthermal stability of epoxy containing 10% by weight of 66.34 $\mu$m aluminium particles were examined using mass loss per sliding distance approach and glass transition temperature ($T_{\rm g}$) was used as a parameter for thermal stability. The results obtained revealed a reduction in the wear rate due to addition of aluminium particles. About 62, 58 and 39% reductions at9 N/0.65 m s$^{-1}$; 9 N/1.3 m s$^{-1}$ and 25 N/1.3 m s$^{-1}$, respectively imply that both sliding speed ($v$) and the applied load ($F$) contribute to an increase in the wear rate. A lower coefficient of friction of epoxy aluminium composites signifies lower surface wear rate in comparison with that of the epoxy polymer upon contact with another body in applications. The linear model establishes that $v$ with a $P$ value of 0.0046 has a greater significant influence on the wear resistance of the composite than $F$ with a higher $P$ value (0.0103). By the model, the epoxy aluminium composite under 24.63 N isexpected to experience a wear rate of 0.000537 g m$^{-1}$ which is 1380% lower than that established by the results of the experiment. About 36% increase in $T_{\rm g}$ is observed and 2FI model affirms that there is a gradual increase in $T_{\rm g}$ with heat flow through the sample during the glass transition period. Hence, the 2FI model having adequate precision of 164 > 4 is appropriate to be used for navigating a design phase for thermal stability properties.

    • Author Affiliations

    • Dates

    • Supplementary Material

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.