Home > Publications database > Untersuchungen zu den Versagensmechanismen von Wärmedämmschicht-Systemen im Temperaturbereich von 900 bis 1050°C bei zyklischer Temperaturbelastung > print

001     32190
005     20240711092257.0
024 7 _ |2 Handle
|a 2128/307
024 7 _ |2 URI
|a 307
037 _ _ |a PreJuSER-32190
088 1 _ |a Juel-4056
088 _ _ |a Juel-4056
|2 JUEL
100 1 _ |0 P:(DE-Juel1)VDB5842
|a Anton, Reiner
|b 0
|e Corresponding author
|u FZJ
245 _ _ |a Untersuchungen zu den Versagensmechanismen von Wärmedämmschicht-Systemen im Temperaturbereich von 900 bis 1050°C bei zyklischer Temperaturbelastung
260 _ _ |a Jülich
|b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
|c 2003
336 7 _ |0 PUB:(DE-HGF)3
|2 PUB:(DE-HGF)
|a Book
336 7 _ |2 DRIVER
|a book
336 7 _ |0 1
|2 EndNote
|a Book
336 7 _ |2 DataCite
|a Output Types/Book
336 7 _ |2 ORCID
|a BOOK
336 7 _ |2 BibTeX
|a BOOK
490 0 _ |0 PERI:(DE-600)2414853-2
|8 9446
|a Berichte des Forschungszentrum Jülich
|v 4056
|x 0944-2952
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a The present work examines the failure mechanisms of TBC-coated systems during cyclic temperature exposure without additional mechanical load in the temperature range between 900°C and 1050°C. If failure appeared until an testing duration of 5000h in the temperature range between 900°C and 950°C, it was driven by the formation of a brittle chromium-carbide layer in the interdiffusion zone between the substrate and the MCrAlY bondcoating. It can be distinguished between two cases. At a low activity of chrome in the MCrAlY, the carbon from the substrate can diffuse into the bond coating and leads there to local precipitations of chromium-carbide, that doesn't exert, however, any effect on the bonding of the MCrAlY. If the activity of chrome in the bond coating is however high, the formation of a closed chromium-carbide layer caused cracks and subsequent spallation during temperature changes. It could be shown that specifically the elements rhenium and aluminum contribute to a significan tincrease of the chrome activity. If spallation of the TBC occurred in the temperature range between 1000°C to 1050°C, it was correlated with the oxidation of the bondcoating. A flawless $\alpha$-Al$_{2}$O$_{3}$ oxide layer doesn't necessarily need to contribute to increased lifetimes. Since cracks have their origin generally at defects, the crack propagation takes place along the border between the bond coating and the oxide layer for components with a pure oxide layer and a smooth MCrAIY-surface. Considering a rough bond coating surface, a crack will be initiated along the border between oxide and TBC. In a defect containing oxide layer, however, cracks that develop within the oxide can be stopped at flaws. Consequently, an optimal bond coating seems to be one that develops an existing optimal surface roughness and trains a defect containing oxide layer with a slow growth rate.
536 _ _ |0 G:(DE-Juel1)FUEK248
|2 G:(DE-HGF)
|a Werkstoffsysteme für Kraftwerke
|c E03
|x 0
700 1 _ |0 P:(DE-Juel1)129782
|a Quadakkers, Willem J.
|b 1
|u FZJ
856 4 _ |u https://juser.fz-juelich.de/record/32190/files/Juel_4056_Anton.pdf
|y OpenAccess
909 C O |o oai:juser.fz-juelich.de:32190
|p openaire
|p open_access
|p driver
|p VDB
|p dnbdelivery
913 1 _ |0 G:(DE-Juel1)FUEK248
|b Energie
|k E03
|l Rationelle Energieumwandlung
|v Werkstoffsysteme für Kraftwerke
|x 0
914 1 _ |y 2003
915 _ _ |0 StatID:(DE-HGF)0510
|2 StatID
|a OpenAccess
920 1 _ |0 I:(DE-Juel1)VDB2
|d 31.12.2006
|g IWV
|k IWV-2
|l Werkstoffstruktur und Eigenschaften
|x 0
970 _ _ |a VDB:(DE-Juel1)33988
980 1 _ |a FullTexts
980 _ _ |a VDB
980 _ _ |a JUWEL
980 _ _ |a ConvertedRecord
980 _ _ |a book
980 _ _ |a I:(DE-Juel1)IEK-2-20101013
980 _ _ |a UNRESTRICTED
980 _ _ |a FullTexts
981 _ _ |a I:(DE-Juel1)IMD-1-20101013
981 _ _ |a I:(DE-Juel1)IEK-2-20101013

LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21