Journal of Thermal Spray Technology

, Volume 7, Issue 2, pp 197–204 | Cite as

Investigation of alumina splats formed in the induction plasma process

  • X. Fan
  • F. Gitzhofer
  • M. Boulos
Reviewed Papers

Abstract

The investigation of the flattening behavior of Al2O3 particles melted in the induction plasma process was reported. Three typical morphologies of alumina splats were recognized: mushroom-like, pancake-like, and flower-like types. Through the conduct of a 24 factorial design of experiments, it was determined that the important factors controlling the deformation of splats are the pressure in the spray chamber, the spraying distance, and the powder size. Interactions among these three factors are significant. Using plasma diagnostic techniques, the relation between the splat morphology and the surface temperature and velocity of particles prior to impingement on the substrate was established.

Keywords

alumina splat design of experiment induction plasma process 

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Copyright information

© ASM International 1998

Authors and Affiliations

  • X. Fan
    • 1
  • F. Gitzhofer
    • 1
  • M. Boulos
    • 1
  1. 1.Plasma Technology Research CenterUniversity of SherbrookeSherbrookeCanada

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