Role of interdiffusion and heat treatments on the adhesion of plasma sprayed NiCrAlY coatings

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

  • Caroline Richard
  • Gerard Beranger
  • Jian Lu

Detail(s)

Original languageEnglish
Title of host publicationTMS Annual Meeting
PublisherMinerals, Metals & Materials Soc (TMS)
Pages129-140
Publication statusPublished - 1997
Externally publishedYes

Conference

TitleProceedings of the 1997 TMS Annual Meeting
CityOrlando, FL, USA
Period10 - 13 February 1997

Abstract

The aim of this work was to investigate by means of indentation at the coating/substrate interface, the control of the amplitude of the residual stresses and by X-Ray images, the adhesion of plasma-sprayed NiCrAlY coatings on nickel-based superalloy substrates. The present work was also carried out on two types of plasma spraying techniques: Atmospheric Plasma Spraying (APS) and Vacuum Plasma Spraying (VPS) and a part oh each kind of samples was post-heat treated. An interesting feature of the results shows that when the residual stresses near interface are tensile (without post heat treatment), the adhesion falls. When they are compressive (with post-heat treatment), the opposite effect appears. In the same time, the examination of the results revealed that the VPS coating-substrate composite system is more adherent than the APS system. A study of the interface is also carried out in order to control interdiffusion phenomena.

Citation Format(s)

Role of interdiffusion and heat treatments on the adhesion of plasma sprayed NiCrAlY coatings. / Richard, Caroline; Beranger, Gerard; Lu, Jian.

TMS Annual Meeting. Minerals, Metals & Materials Soc (TMS), 1997. p. 129-140.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review