Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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NiAl Behavior at Plasma Spray Deposition

  • Orban, Radu L. (Technical University of Cluj-Napoca) ;
  • Lucaci, Mariana (National Institute for Research and Development in Electrical Engineering ICPE-CA) ;
  • Rosso, Mario (National Institute for Research and Development in Electrical Engineering ICPE-CA) ;
  • Grande, Marco Actis (Politecnico di Torino)
  • Published : 2006.09.24
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Abstract

Behavior of stoichiometric and near-stoichiometric NiAl at plasma spray deposition, without and with a bond coat, for coating layers realization on a low alloyed steel substrate, has been investigated. In all variants, NiAl particle melting and subsequent welding at the impact with substrate were observed, forming a relatively compact and adherent coating layer with the NiAl stability maintaining - all assuring the coating layer oxidation and corrosion resistance. Good results from these points of view, also validated through corrosion tests, were obtained for 45:55 Ni:Al composition without a bond coat but adopting an Ar protective surrounding of plasma jet.

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