Processing, Characterization, and Properties of α-Al2O3-AA2900 Composites for Aerospace Brake Pad Applications

Ashwath Pazhani, M. Anthony Xavior, Andre Dl Batako

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Replacing high-strength frictional materials with lightweight composite alternatives is currently a global challenge for researchers. In this work, aluminum alloy (AA2900)-based metal-matrix composites reinforced with 6 wt.% α-alumina were fabricated then subjected to T6 heat treatment followed by case hardening. The resulting composite samples exhibited improved hardness, strength behavior, and stress–strain behavior along with good ductility and formability when microwave sintered. Good microstructural bonding was observed for all samples, which can be attributed to the finer α-Al2O3 particulates used as the reinforcement and the microwave sintering process. The mechanical and wear properties of the composites were compared with existing aerospace brake pad material. Data for wear characteristics versus the number of landings for the existing brake pad material were considered as the benchmark data, and the feasibility of replacing it with the developed composites was evaluated.

Original languageEnglish
Pages (from-to)4365-4375
Number of pages11
Issue number12
Early online date15 Oct 2021
Publication statusPublished - 1 Dec 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society.

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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