Skip to content
Book section

The wear behaviour of dual ceramic particles (Al2O3/SiC) reinforced aluminium matrix composites

Demir A, Altinkok N, Findik F, Ozsert I ...see all

Euro Ceramics Viii, Pts 1-3, vol. 264-268 (2004) pp. 1079-1082 Published by Trans Tech Publications Ltd

  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.
  • N/A

    Views

    ScienceDirect users who have downloaded this article.
Sign in to save reference

Abstract

Al2O3/SiC powder mix was prepared by reacting of aqueous solution of aluminium sulpbate, ammonium sulphate and water containing SiC particles at 1200degreesC. 10 wt% of this dual ceramic powder with different sized SiC particles was added to a liquid matrix alloy during mechanical stirring between solidus and liqudus under inert conditions. The wear behaviour of the dual ceramic reinforced aluminium matrix composites was investigated using pin-on-disc test at room temperature under dry conditions. It was found that dual and bimodal particle reinforcement decreased wear loss especially when SiC powder with larger grain size was used. Microstructural examination showed that as well as coarse SiC particle reinforcement, a fine alumina particle reinforcement phase was observed within the aluminium matrix (A332). The improvement in wear resistance of the dual ceramic reinforced aluminium matrix composites (AlMCs) could be attributed to the ability of the larger SIC particles to carry a greater portion of the applied load, as well as to the function of the larger SiC particles in protecting the smaller alumina particles from being gouged out during the wear process. Furthermore, the incorporation of dual and bimodal particles increased hardness of the composites with respect to the composite with fully small sized particles.

Author-supplied keywords

  • metal matrix composite
  • stir casting
  • wear resistance

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • A Demir

  • N Altinkok

  • F Findik

  • I Ozsert

Cite this document

Choose a citation style from the tabs below