CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000253

Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat

Identifieur interne : 000253 ( PascalFrancis/Corpus ); précédent : 000252; suivant : 000254

Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat

Auteurs : B. Rhouta ; B. Pieraggi

Source :

Materials science forum [ 0255-5476 ] ; 2001.

RBID : Pascal:02-0303530

Descripteurs français

Pascal (Inist)
- Revêtement non métallique, Couche oxyde, Oxydation, Interface, Zircone stabilisée, Alliage base cobalt, Microstructure, Air, Projection plasma, Traitement surface.

English descriptors

KwdEn :
- Air, Cobalt base alloys, Interface, Microstructure, Non metal coating, Oxidation, Oxide layer, Plasma spraying, Stabilized zirconia, Surface treatment.

Abstract

The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0255-5476`
A05				`@2 369-372`
A06				`@3 p.1`
A08	`01`	`1`	`ENG`	`@1 Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat`
A09	`01`	`1`	`ENG`	`@1 High temperature corrosion and protection of materials : Les Embiez, 22-26 May 2000`
A09	`02`	`5`	`FRE`	`@1 5e colloque international sur la corrosion et la protection des matériaux à haute température`
A11	`01`	`1`		`@1 RHOUTA (B.)`
A11	`02`	`1`		`@1 PIERAGGI (B.)`
A12	`01`	`1`		`@1 STREIFF (Roland) @9 ed.`
A12	`02`	`1`		`@1 WRIGHT (Ian G.) @9 ed.`
A12	`03`	`1`		`@1 KRUTENAT (Richard C.) @9 ed.`
A12	`04`	`1`		`@1 CAILLET (Marcel) @9 ed.`
A12	`05`	`1`		`@1 GALERIE (Alain) @9 ed.`
A14	`01`			`@1 Département de Chimie, Faculté des Sciences et Techniques Gueliz, B.P 618 @2 Marrakech @3 MAR @Z 1 aut.`
A14	`02`			`@1 ENSCT (CIRIMAT-INPT-UPS UMR 5085) @2 31077 Toulouse @3 FRA @Z 2 aut.`
A20				`@1 687-694`
A21				`@1 2001`
A23	`01`			`@0 ENG`
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A43	`01`			`@1 INIST @2 21741 @5 354000097020780790`
A44				`@0 0000 @1 © 2002 INIST-CNRS. All rights reserved.`
A45				`@0 13 ref.`
A47	`01`	`1`		`@0 02-0303530`
A60				`@1 P @2 C`
A61				`@0 A`
A64	`01`	`1`		`@0 Materials science forum`
A66	`01`			`@0 CHE`
C01	`01`		`ENG`	@0 The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.
C02	`01`	`X`		`@0 001D11C06E`
C02	`02`	`X`		`@0 240`
C03	`01`	`X`	`FRE`	`@0 Revêtement non métallique @5 55`
C03	`01`	`X`	`ENG`	`@0 Non metal coating @5 55`
C03	`01`	`X`	`GER`	`@0 Nichtmetallischer Ueberzug @5 55`
C03	`01`	`X`	`SPA`	`@0 Revestimiento no metálico @5 55`
C03	`02`	`X`	`FRE`	`@0 Couche oxyde @5 56`
C03	`02`	`X`	`ENG`	`@0 Oxide layer @5 56`
C03	`02`	`X`	`GER`	`@0 Oxidschicht @5 56`
C03	`02`	`X`	`SPA`	`@0 Capa óxido @5 56`
C03	`03`	`X`	`FRE`	`@0 Oxydation @5 57`
C03	`03`	`X`	`ENG`	`@0 Oxidation @5 57`
C03	`03`	`X`	`GER`	`@0 Oxidation @5 57`
C03	`03`	`X`	`SPA`	`@0 Oxidación @5 57`
C03	`04`	`X`	`FRE`	`@0 Interface @5 58`
C03	`04`	`X`	`ENG`	`@0 Interface @5 58`
C03	`04`	`X`	`GER`	`@0 Grenzflaeche @5 58`
C03	`04`	`X`	`SPA`	`@0 Interfase @5 58`
C03	`05`	`X`	`FRE`	`@0 Zircone stabilisée @5 59`
C03	`05`	`X`	`ENG`	`@0 Stabilized zirconia @5 59`
C03	`05`	`X`	`SPA`	`@0 Zircona estabilizada @5 59`
C03	`06`	`3`	`FRE`	`@0 Alliage base cobalt @2 NK @5 60`
C03	`06`	`3`	`ENG`	`@0 Cobalt base alloys @2 NK @5 60`
C03	`07`	`X`	`FRE`	`@0 Microstructure @5 61`
C03	`07`	`X`	`ENG`	`@0 Microstructure @5 61`
C03	`07`	`X`	`GER`	`@0 Mikrogefuege @5 61`
C03	`07`	`X`	`SPA`	`@0 Microestructura @5 61`
C03	`08`	`X`	`FRE`	`@0 Air @5 63`
C03	`08`	`X`	`ENG`	`@0 Air @5 63`
C03	`08`	`X`	`GER`	`@0 Luft @5 63`
C03	`08`	`X`	`SPA`	`@0 Aire @5 63`
C03	`09`	`X`	`FRE`	`@0 Projection plasma @5 64`
C03	`09`	`X`	`ENG`	`@0 Plasma spraying @5 64`
C03	`09`	`X`	`GER`	`@0 Plasmaspritzen @5 64`
C03	`09`	`X`	`SPA`	`@0 Proyección plasma @5 64`
C03	`10`	`X`	`FRE`	`@0 Traitement surface @5 74`
C03	`10`	`X`	`ENG`	`@0 Surface treatment @5 74`
C03	`10`	`X`	`GER`	`@0 Oberflaechenbehandlung @5 74`
C03	`10`	`X`	`SPA`	`@0 Tratamiento superficie @5 74`
N21				`@1 175`
N82				`@1 PSI`

A30	`01`	`1`	`ENG`	`@1 International symposium on high temperature corrosion and protection of materials @2 5 @3 Les Embiez FRA @4 2000-05-22`
A30	`02`	`1`	`FRE`	`@1 Colloque international sur la corrosion et la protection des matériaux à haute température @2 5 @3 Les Embiez FRA @4 2000-05-22`

Format Inist (serveur)

NO :	PASCAL 02-0303530 INIST
FT :	5e colloque international sur la corrosion et la protection des matériaux à haute température
ET :	Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat
AU :	RHOUTA (B.); PIERAGGI (B.); STREIFF (Roland); WRIGHT (Ian G.); KRUTENAT (Richard C.); CAILLET (Marcel); GALERIE (Alain)
AF :	Département de Chimie, Faculté des Sciences et Techniques Gueliz, B.P 618/Marrakech/Maroc (1 aut.); ENSCT (CIRIMAT-INPT-UPS UMR 5085)/31077 Toulouse/France (2 aut.)
DT :	Publication en série; Congrès; Niveau analytique
SO :	Materials science forum; ISSN 0255-5476; Suisse; Da. 2001; Vol. 369-372; No. p.1; Pp. 687-694; Bibl. 13 ref.
LA :	Anglais
EA :	The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.
CC :	001D11C06E; 240
FD :	Revêtement non métallique; Couche oxyde; Oxydation; Interface; Zircone stabilisée; Alliage base cobalt; Microstructure; Air; Projection plasma; Traitement surface
ED :	Non metal coating; Oxide layer; Oxidation; Interface; Stabilized zirconia; Cobalt base alloys; Microstructure; Air; Plasma spraying; Surface treatment
GD :	Nichtmetallischer Ueberzug; Oxidschicht; Oxidation; Grenzflaeche; Mikrogefuege; Luft; Plasmaspritzen; Oberflaechenbehandlung
SD :	Revestimiento no metálico; Capa óxido; Oxidación; Interfase; Zircona estabilizada; Microestructura; Aire; Proyección plasma; Tratamiento superficie
LO :	INIST-21741.354000097020780790
ID :	02-0303530

Links to Exploration step

Pascal:02-0303530

Le document en format XML

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<front><div type="abstract" xml:lang="en">The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.</div>
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<s9>ed.</s9>
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<fA12 i1="03" i2="1"><s1>KRUTENAT (Richard C.)</s1>
<s9>ed.</s9>
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<s9>ed.</s9>
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<fA14 i1="02"><s1>ENSCT (CIRIMAT-INPT-UPS UMR 5085)</s1>
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<fC01 i1="01" l="ENG"><s0>The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.</s0>
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<s5>56</s5>
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<s5>57</s5>
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<s5>57</s5>
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<s5>57</s5>
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<s5>58</s5>
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<s5>58</s5>
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<s5>59</s5>
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<s5>61</s5>
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<s5>61</s5>
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<s5>61</s5>
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<s5>63</s5>
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<s5>63</s5>
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<s5>64</s5>
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<s5>64</s5>
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<fC03 i1="09" i2="X" l="SPA"><s0>Proyección plasma</s0>
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<s5>74</s5>
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<fN82><s1>PSI</s1>
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<pR><fA30 i1="01" i2="1" l="ENG"><s1>International symposium on high temperature corrosion and protection of materials</s1>
<s2>5</s2>
<s3>Les Embiez FRA</s3>
<s4>2000-05-22</s4>
</fA30>
<fA30 i1="02" i2="1" l="FRE"><s1>Colloque international sur la corrosion et la protection des matériaux à haute température</s1>
<s2>5</s2>
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<s4>2000-05-22</s4>
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<server><NO>PASCAL 02-0303530 INIST</NO>
<FT>5e colloque international sur la corrosion et la protection des matériaux à haute température</FT>
<ET>Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat</ET>
<AU>RHOUTA (B.); PIERAGGI (B.); STREIFF (Roland); WRIGHT (Ian G.); KRUTENAT (Richard C.); CAILLET (Marcel); GALERIE (Alain)</AU>
<AF>Département de Chimie, Faculté des Sciences et Techniques Gueliz, B.P 618/Marrakech/Maroc (1 aut.); ENSCT (CIRIMAT-INPT-UPS UMR 5085)/31077 Toulouse/France (2 aut.)</AF>
<DT>Publication en série; Congrès; Niveau analytique</DT>
<SO>Materials science forum; ISSN 0255-5476; Suisse; Da. 2001; Vol. 369-372; No. p.1; Pp. 687-694; Bibl. 13 ref.</SO>
<LA>Anglais</LA>
<EA>The microstructure of alumina scale grown at the CoNiCrAlY / Y-PSZ (yttria- partially stabilized zirconia) interface upon oxidation in air at 1100 °C for 100 h has been investigated by XRD, SEM, TEM and EDS. The oxide scale microstructure of the plasma-sprayed thermal barrier coatings is characterized by a discontinuous evolution of grain size throughout the scale thickness. The columnar alumina grains in contact with MCrAIY as well as the important porosity observed close to Y-PSZ indicate that the scale growth was evolved by an anionic diffusion mechanism. The observation of a well-defined faceted interface between the innermost alumina grains and metallic bond-coat, as well as the occurrence of epitaxy between these phases definitively prove that the better adhesion of alumina to MCrAlY alloy was achieved by the joining of the oxide and metal lattices, rather than by a keying effect due to the internal oxide precipitates. These latter can contribute to alumina adherence by pinning the emitted dislocations resulting from the displacement of interfacial ledges during alumina growth, and thus increase the metallic strength near the interface.</EA>
<CC>001D11C06E; 240</CC>
<FD>Revêtement non métallique; Couche oxyde; Oxydation; Interface; Zircone stabilisée; Alliage base cobalt; Microstructure; Air; Projection plasma; Traitement surface</FD>
<ED>Non metal coating; Oxide layer; Oxidation; Interface; Stabilized zirconia; Cobalt base alloys; Microstructure; Air; Plasma spraying; Surface treatment</ED>
<GD>Nichtmetallischer Ueberzug; Oxidschicht; Oxidation; Grenzflaeche; Mikrogefuege; Luft; Plasmaspritzen; Oberflaechenbehandlung</GD>
<SD>Revestimiento no metálico; Capa óxido; Oxidación; Interfase; Zircona estabilizada; Microestructura; Aire; Proyección plasma; Tratamiento superficie</SD>
<LO>INIST-21741.354000097020780790</LO>
<ID>02-0303530</ID>
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	Serveur d'exploration sur le cobalt au Maghreb
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Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat

Microstructural characterization of the oxide scale grown at the interface between PSZ top coat and MCrAlY bond coat

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