Poster (Other)

FZJ-2013-06586

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Interaction of vacuum plasma-sprayed protective bond coats with γ/γ`-strengthened Co-base superalloys during thermal treatment

Terberger, P. (Corresponding author)FZJ* ; Vaßen, R.FZJ* ; Klein, L.Extern* ; Virtanen, S.Extern*

2013

Abstract: In this poster the interaction of vacuum plasma-sprayed (VPS) protective bond coats and γ/γ`-strengthened Co-base superalloys during thermal treatment is presented. γ/γ`-strengthened Co-base superalloys are currently investigated with the aim of utilizing them for high-temperature, high-load applications in gas turbine blades. Those blades are always protected by a thermal barrier coating system (TBC) consisting of an oxidation-resistant metallic bond coat and a ceramic top coat. Plasma-sprayed MCrAlY bond coats (M=Co,Ni) are commonly used for this application. For the new Co-base superalloys the interaction with the adjacent bond coat needs to be studied to ensure their compatibility. To do this, MCrAlY-coated single-crystal and polycrystalline Co-base superalloy samples were thermally treated at 900 °C and analysed using SEM and EDX. In this work current results are presented with an emphasis on the interdiffusion behaviour. Phases formed in the interdiffusion zone are identified and analysed.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 122 - Power Plants (POF2-122) (POF2-122)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2013

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