Mechanical and tribological characterization of self-lubricating Mg-SiC-Gr hybrid metal matrix composite (MMC) fabricated via mechanical alloying

Azzat Esam Abdulqader Al-maamari, AKM Asif Iqbal, Dewan Muhammad Nuruzzaman

Research output: Journal PublicationArticlepeer-review

10 Citations (Scopus)

Abstract

This study deals with the fabrication and tribo-mechanical characterization of magnesium (Mg)-silicon carbide (SiC)- graphite (Gr) hybrid metal matrix composites (MMCs). The hybrid MMCs were fabricated by a mechanical alloying process and their mechanical and tribological properties were investigated as well as compared with those of the base material and the Mg-Gr composite. The morphology analysis of the constituent powders and the hybrid powder mixture was conducted through SEM, EDX and XRD. The microstructure of the sintered MMCs showed a uniform distribution of the reinforcement on the matrix. The developed hybrid MMCs exhibited greater mechanical properties when compared to the base material and the Mg-Gr composite. The tribological characterization of the fabricated hybrid MMCs was studied using the pin-on-disc tribometer under dry sliding conditions. The hybrid MMC composed of 5%Gr and 10%SiC (Mg+5%Gr+10%SiC) demonstrates 92% low wear rate and 53% low friction coefficient than the matrix Mg. Therefore, this hybrid MMC can be a potential candidate to develop components used in the tribological operation.

Original languageEnglish
Pages (from-to)535-544
Number of pages10
JournalJournal of Science: Advanced Materials and Devices
Volume5
Issue number4
DOIs
Publication statusPublished - Dec 2020
Externally publishedYes

Keywords

  • Characterization
  • Mechanical alloying
  • Mechanical properties
  • Metal-matrix composites (MMCs)
  • Wear

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Biomaterials
  • Materials Science (miscellaneous)

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