Self-healing thermal barrier coating systems fabricated by spark plasma sintering

Franck Nozahic; Claude Estournès; Alexandra Lucia Carabat; Willem G. Sloof; Sybrand van der Zwaag; Daniel Monceau

doi:10.1016/j.matdes.2018.02.001

Self-healing thermal barrier coating systems fabricated by spark plasma sintering

Franck Nozahic, Claude Estournès^*, Alexandra Lucia Carabat, Willem G. Sloof, Sybrand van der Zwaag, Daniel Monceau

^*Corresponding author for this work

Novel Aerospace Materials

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Abstract

The present paper focuses on the Spark Plasma Sintering (SPS) manufacturing of a new type of self-healing thermal barrier coating (TBC) and a study of its thermal cycling behaviour. The ceramic coating consists on an Yttria Partially Stabilized Zirconia (YPSZ) matrix into which healing agents made of MoSi₂-Al₂O₃ core-shell particles are dispersed prior to sintering. The protocol used to sinter self-healing TBCs on MCrAlY (M: Ni or NiCo) pre-coated Ni-based superalloys is described and the reaction between the particles and the MCrAlY bond coating as well as the preventive solutions are determined. Thermal cycling experiments are performed on this complete multilayer system to study the crack healing behaviour. Post-mortem observations highlighted local healing of cracks due to the formation of silica and the subsequent conversion to zircon at the rims of the cracks.

Original language	English
Pages (from-to)	204-213
Journal	Materials & Design
Volume	143
DOIs	https://doi.org/10.1016/j.matdes.2018.02.001
Publication status	Published - 2018

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Ceramic matrix composites
High-temperature cyclic oxidation
Intermetallic particles
Multi-layer materials
Self-healing thermal barrier coatings
Spark plasma sintering

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10.1016/j.matdes.2018.02.001

1_s2.0_S0264127518300790_mainFinal published version, 3.03 MB

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title = "Self-healing thermal barrier coating systems fabricated by spark plasma sintering",

abstract = "The present paper focuses on the Spark Plasma Sintering (SPS) manufacturing of a new type of self-healing thermal barrier coating (TBC) and a study of its thermal cycling behaviour. The ceramic coating consists on an Yttria Partially Stabilized Zirconia (YPSZ) matrix into which healing agents made of MoSi2-Al2O3 core-shell particles are dispersed prior to sintering. The protocol used to sinter self-healing TBCs on MCrAlY (M: Ni or NiCo) pre-coated Ni-based superalloys is described and the reaction between the particles and the MCrAlY bond coating as well as the preventive solutions are determined. Thermal cycling experiments are performed on this complete multilayer system to study the crack healing behaviour. Post-mortem observations highlighted local healing of cracks due to the formation of silica and the subsequent conversion to zircon at the rims of the cracks.",

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author = "Franck Nozahic and Claude Estourn{\`e}s and Carabat, {Alexandra Lucia} and Sloof, {Willem G.} and {van der Zwaag}, Sybrand and Daniel Monceau",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

year = "2018",

doi = "10.1016/j.matdes.2018.02.001",

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journal = "Materials & Design",

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AU - Nozahic, Franck

AU - Estournès, Claude

AU - Carabat, Alexandra Lucia

AU - Sloof, Willem G.

AU - van der Zwaag, Sybrand

AU - Monceau, Daniel

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2018

Y1 - 2018

N2 - The present paper focuses on the Spark Plasma Sintering (SPS) manufacturing of a new type of self-healing thermal barrier coating (TBC) and a study of its thermal cycling behaviour. The ceramic coating consists on an Yttria Partially Stabilized Zirconia (YPSZ) matrix into which healing agents made of MoSi2-Al2O3 core-shell particles are dispersed prior to sintering. The protocol used to sinter self-healing TBCs on MCrAlY (M: Ni or NiCo) pre-coated Ni-based superalloys is described and the reaction between the particles and the MCrAlY bond coating as well as the preventive solutions are determined. Thermal cycling experiments are performed on this complete multilayer system to study the crack healing behaviour. Post-mortem observations highlighted local healing of cracks due to the formation of silica and the subsequent conversion to zircon at the rims of the cracks.

AB - The present paper focuses on the Spark Plasma Sintering (SPS) manufacturing of a new type of self-healing thermal barrier coating (TBC) and a study of its thermal cycling behaviour. The ceramic coating consists on an Yttria Partially Stabilized Zirconia (YPSZ) matrix into which healing agents made of MoSi2-Al2O3 core-shell particles are dispersed prior to sintering. The protocol used to sinter self-healing TBCs on MCrAlY (M: Ni or NiCo) pre-coated Ni-based superalloys is described and the reaction between the particles and the MCrAlY bond coating as well as the preventive solutions are determined. Thermal cycling experiments are performed on this complete multilayer system to study the crack healing behaviour. Post-mortem observations highlighted local healing of cracks due to the formation of silica and the subsequent conversion to zircon at the rims of the cracks.

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KW - High-temperature cyclic oxidation

KW - Intermetallic particles

KW - Multi-layer materials

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Self-healing thermal barrier coating systems fabricated by spark plasma sintering

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Keywords

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