Articles
  • Comparative study among Al2O3, ZTA, MgO/ZTA & CuO/ZTA composites in terms of Mechanical Properties

  • G. Gokilakrishnana,*, Bipin Kumar Singhb and M. Vigneshkumarc

  • aDepartment of Mechanical Engineering, Sri Eshwar College of Engineering, Coimbatore - 641202, Tamil Nadu, India
    bCentre for Augmented Intelligence and Design, Department of Mechanical Engineering, Sri Eshwar College of Engineering, Coimbatore-641202 Tamilnadu, India
    cDepartment of Mechanical Engineering, Sri Krishna College of Engineering and Technology
    Coimbatore, Tamil Nadu, India

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Alumina (Al2O3) ceramics are one of the demanded materials in the current scenario due to its cheaper cost, abundance of availability and combination of high hardness and fracture toughness by reinforcement of ytrria stabilized zirconia (YSZ), Magnesium oxide (MgO), and Copper oxide (CuO). The effect of such additives inside alumina ceramics are carried out from last several decades but still there are many more phenomenons that are still inconclusive. So, a comparative study among the said additive in terms of mechanical properties is carried out to reveal the effect of YSZ, MgO and CuO additives inside alumina ceramics. At first, 10 wt. % of YSZ is doped inside the alumina matrix followed by 0.6 wt. % of MgO and 1.5 wt. % of CuO. The developed composites are thoroughly examined in terms of microstructure, bulk density, hardness, and fracture toughness. The results of the microstructure clearly reveal the homogeneous distribution of all additives inside the alumina matrix. A positive effect with YSZ and MgO is noticed on the bulk density and hardness whereas an adverse effect of CuO is observed. The values of fracture toughness are increases with all the additives due to the synergistic effect of transformation toughening and crack bridging phenomenon


Keywords: Alumina, ZTA, MgO, CuO, Mechanical Properties

This Article

  • 2023; 24(4): 655-661

    Published on Aug 31, 2023

  • 10.36410/jcpr.2023.24.4.655
  • Received on Apr 14, 2023
  • Revised on Jul 8, 2023
  • Accepted on Jul 14, 2023

Correspondence to

  • G. Gokilakrishnan

  • Department of Mechanical Engineering, Sri Eshwar College of Engineering, Coimbatore - 641202, Tamil Nadu, India

  • E-mail: ggokilakrishnan@gmail.com