Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)

The effect on M (Ni, Fe, Co)CrAlY manufacturing process (ODS or wrought alloys), alloy composition, substrate thickness and oxidation conditions on the alumina scale morphology, composition and growth kinetics during oxidation at temperature range of 900 -1200 C has been studied under the objective...

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Detalles Bibliográficos
Autor: Alija Martínez, Enrique
Tipo de recurso: tesis doctoral
Fecha de publicación:2011
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:español
OAI Identifier:oai:docta.ucm.es:20.500.14352/47893
Acceso en línea:https://hdl.handle.net/20.500.14352/47893
Access Level:acceso abierto
Palabra clave:620.1(043.2)
Materiales
Metales
Oxidación
3312 Tecnología de Materiales
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spelling Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)Alija Martínez, Enrique620.1(043.2)MaterialesMetalesOxidaciónMateriales3312 Tecnología de MaterialesThe effect on M (Ni, Fe, Co)CrAlY manufacturing process (ODS or wrought alloys), alloy composition, substrate thickness and oxidation conditions on the alumina scale morphology, composition and growth kinetics during oxidation at temperature range of 900 -1200 C has been studied under the objective of: - Alloy oxidation behaviour and alumina scale phases transformation, including microstructure examination of the oxide surface scale, thermogavimetry studies and oxide scale characterization. - I n detailed evaluation of the residual stresses state. The FeCrAlY alloys studied involves homogeneous and exclusive alumina scale formation, where the experimental results and later analysis and discussion is applying on NiCrAlY alloys which exhibi ts complex oxidation behaviour. Ni based alloys exhibits heterogeneous alloy microstructure and mixture of oxide scale composition, mainly formed by alumina scale together with Chromium, Nickel and Cobalt oxides, function of alloy composition. The applied experimental techniques and conclusions on oxides scales formed on the surface of prior alloy systems studied are used as background to investigate and understanding of TBC system. NiCoCrAlY layer is a bond coat (BC) materials in TBC system, where the buried alumina scales (Thermally Growth Oxide, TGO layer) growths under ceramic layer YSZ (Ytrium oxide Stabilized with Zirconia layer, ZrO2-8 Y2O3). Model TBC standard samples and gas turbine blade components experimental results and ana lysis interpretation, are focused into the progression of damage and failure indications. The experimental activities was aimed to detect premature failure and evaluate sample integrity by Ruby Fluorescence Spectroscopy. Therefore, various microstruc tures features as function of thermal cyclic (1000 C in air flow) and intermittent oxidation (1100 -1200 C) have been carried out. We call it intermittent oxidation to isothermal oxidation during certain period of time and cooling to room temperature . Then the sample in visual inspected looking for any kind of surface damage and RFS analysis (this process got no more than 24 hours). Then the sample is again oxidize at same conditions.Universidad Complutense de Madrid, Servicio de PublicacionesPérez Trujillo, Francisco JavierQuadakkers, W.J.Universidad Complutense de Madrid20112011-12-2720112011-12-27doctoral thesishttp://purl.org/coar/resource_type/c_db06info:eu-repo/semantics/doctoralThesisapplication/pdfhttps://hdl.handle.net/20.500.14352/47893reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/478932026-06-02T12:44:21Z
dc.title.none.fl_str_mv Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
title Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
spellingShingle Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
Alija Martínez, Enrique
620.1(043.2)
Materiales
Metales
Oxidación
Materiales
3312 Tecnología de Materiales
title_short Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
title_full Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
title_fullStr Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
title_full_unstemmed Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
title_sort Análisis de las capas de alumina formadas a elevada temperatura sobre aleaciones MCrAlY y barreras térmicas (TBC)
dc.creator.none.fl_str_mv Alija Martínez, Enrique
author Alija Martínez, Enrique
author_facet Alija Martínez, Enrique
author_role author
dc.contributor.none.fl_str_mv Pérez Trujillo, Francisco Javier
Quadakkers, W.J.
Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 620.1(043.2)
Materiales
Metales
Oxidación
Materiales
3312 Tecnología de Materiales
topic 620.1(043.2)
Materiales
Metales
Oxidación
Materiales
3312 Tecnología de Materiales
description The effect on M (Ni, Fe, Co)CrAlY manufacturing process (ODS or wrought alloys), alloy composition, substrate thickness and oxidation conditions on the alumina scale morphology, composition and growth kinetics during oxidation at temperature range of 900 -1200 C has been studied under the objective of: - Alloy oxidation behaviour and alumina scale phases transformation, including microstructure examination of the oxide surface scale, thermogavimetry studies and oxide scale characterization. - I n detailed evaluation of the residual stresses state. The FeCrAlY alloys studied involves homogeneous and exclusive alumina scale formation, where the experimental results and later analysis and discussion is applying on NiCrAlY alloys which exhibi ts complex oxidation behaviour. Ni based alloys exhibits heterogeneous alloy microstructure and mixture of oxide scale composition, mainly formed by alumina scale together with Chromium, Nickel and Cobalt oxides, function of alloy composition. The applied experimental techniques and conclusions on oxides scales formed on the surface of prior alloy systems studied are used as background to investigate and understanding of TBC system. NiCoCrAlY layer is a bond coat (BC) materials in TBC system, where the buried alumina scales (Thermally Growth Oxide, TGO layer) growths under ceramic layer YSZ (Ytrium oxide Stabilized with Zirconia layer, ZrO2-8 Y2O3). Model TBC standard samples and gas turbine blade components experimental results and ana lysis interpretation, are focused into the progression of damage and failure indications. The experimental activities was aimed to detect premature failure and evaluate sample integrity by Ruby Fluorescence Spectroscopy. Therefore, various microstruc tures features as function of thermal cyclic (1000 C in air flow) and intermittent oxidation (1100 -1200 C) have been carried out. We call it intermittent oxidation to isothermal oxidation during certain period of time and cooling to room temperature . Then the sample in visual inspected looking for any kind of surface damage and RFS analysis (this process got no more than 24 hours). Then the sample is again oxidize at same conditions.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-12-27
2011
2011-12-27
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/47893
url https://hdl.handle.net/20.500.14352/47893
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Complutense de Madrid, Servicio de Publicaciones
publisher.none.fl_str_mv Universidad Complutense de Madrid, Servicio de Publicaciones
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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