Journal of Thermal Spray Technology

, Volume 20, Issue 4, pp 760–774 | Cite as

Plasma Spraying of Copper by Hybrid Water-Gas DC Arc Plasma Torch

  • T. KavkaEmail author
  • J. Matějíček
  • P. Ctibor
  • A. Mašláni
  • M. Hrabovský
Peer Reviewed


Water-stabilized DC arc plasma torches offer a good alternative to common plasma sources used for plasma spraying applications. Unique properties of the generated plasma are determined by a specific plasma torch construction. This article is focused on a study of the plasma spraying process performed by a hybrid torch WSP500®-H, which combines two principles of arc stabilization—water vortex and gas flow. Spraying tests with copper powder have been carried out in a wide range of plasma torch parameters. First, analyses of particle in-flight behavior for various spraying conditions were done. After, particles were collected in liquid nitrogen, which enabled analyses of the particle in-flight oxidation. A series of spraying tests were carried out and coatings were analyzed for their microstructure, porosity, oxide content, mechanical, and thermal properties.


copper coatings hybrid water-gas torch metallic particle oxidation plasma spraying 



The authors gratefully acknowledge Grant Agency of the Czech Republic for financial support of the present research under project No. P205/11/2070.


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Copyright information

© ASM International 2011

Authors and Affiliations

  • T. Kavka
    • 1
    Email author
  • J. Matějíček
    • 2
  • P. Ctibor
    • 2
  • A. Mašláni
    • 1
  • M. Hrabovský
    • 1
  1. 1.Thermal Plasma DepartmentInstitute of Plasma PhysicsPragueCzech Republic
  2. 2.Materials Engineering DepartmentInstitute of Plasma PhysicsPragueCzech Republic

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