Influence of Low Pressure Plasma Spraying Parameters on MCrAlY Bond Coat and its Microstructure

Marek Góral; Slawomir Kotowski; Kamil Dychtoń; Marcin Drajewicz; Tadeusz Kubaszek

doi:10.4028/www.scientific.net/KEM.592-593.421

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Influence of Low Pressure Plasma Spraying Parameters on MCrAlY Bond Coat and its Microstructure
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593Influence of Low Pressure Plasma Spraying...

Influence of Low Pressure Plasma Spraying Parameters on MCrAlY Bond Coat and its Microstructure

Abstract:

Low pressure plasma spraying (LPPS) is one of the most advanced processes of an MCrAlY bond coat formation. It ensures the forming of metallic coatings free of oxides which can act as an bond coat for thermal barrier coatings used, among others, for protection of turbine blade surface. The paper presents results of tests into microstructure of coatings made from AMDRY 997 powder on the base of type Inconel 617 heat-resistant nickel alloy. The tests were carried out using light and scanning electron microscopy. Evaluated was the influence of spraying conditions on microstructure, porosity and thickness of the obtained coating. Test results show that the LPPS method allows to form coatings of low porosity and free of oxides which can be used as an bond coat in thermal barrier coatings.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

421-424

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.421

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Online since:

November 2013

Authors:

Marek Góral*, Slawomir Kotowski, Kamil Dychtoń, Marcin Drajewicz, Tadeusz Kubaszek

Keywords:

Aluminide Coatings, Bond Coatings, Plasma Spraying, Thermal Barrier Coating (TBC)

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