Journal of Thermal Spray Technology

, Volume 7, Issue 1, pp 78–86 | Cite as

Aluminum-silicon carbide coatings by plasma spraying

  • K. Ghosh
  • T. Troczynski
  • A. C. D. Chaklader
Reviewed Papers

Abstract

An aluminum base composite (Al-SiC) powder has been developed for producing plasma sprayed coatings on Al and other metallic substrates. The composite powders were prepared by mechanical alloying of 6061 Al alloy with SiC particles. The concentration of SiC was varied between 20 and 75 vol%, and the size of the reinforcement was varied from 8 to 37 µm in the Al-50 vol% SiC composites. The 44 to 140 µm composite powders were sprayed using an axial feed plasma torch. Adhesion strength of the coatings to their substrates were found to decrease with increasing SiC content and with decreasing SiC particle sizes. The increase in the SiC content and decrease in particle size improved the erosive wear resistance of the coatings. The abrasive wear resistance was found to improve with the increase in SiC particle size and with the SiC content in the composite coatings.

Keywords

abrasion and erosion resistance mechanical alloying metal matrix composites (MMC) peel adhesion strength process control additives (PCA) 

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Copyright information

© ASM International 1998

Authors and Affiliations

  • K. Ghosh
    • 1
  • T. Troczynski
    • 1
  • A. C. D. Chaklader
    • 1
  1. 1.University of British ColumbiaVancouverCanada

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