elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Crack Morphology in a Columnar Thermal Barrier Coating System

Dennstedt, Anne and Gaslain, Fabrice and Bartsch, Marion and Guipont, Vincent and Maurel, Vincent (2018) Crack Morphology in a Columnar Thermal Barrier Coating System. 4th International Congress on 3D Materials Science (3DMS 2018), 10-13. Juni 2018, Helingor, Dänemark.

[img] PDF - Registered users only
2MB

Abstract

Ceramic layers are used as thermal barrier coatings (TBCs) on metallic substrates. During thermal transients, the thermal expansion mismatch between coating and substrate drives failure of the TBC mainly by interfacial cracking. Laser Shock Adhesion Test (LASAT) provides stresses at the ceramic/metal interface enabling controlled interfacial cracking. For achieving a clear understanding of the influence of local morphology on interfacial toughness, this study aims at characterizing the 3D morphology of a crack at the interface between metal and an EB-PVD TBC having a columnar structure. Cracks were produced by LASAT and documented further in SE and BSE image stacks collected simultaneously during subsequent slice and view operations using a focus ion beam (FIB) and a scanning electron microscope (FIB slice & view). The segmented 3D data gives clear understanding of the columnar structure of the ceramic and of the interaction between the crack and the TBC microstructure.

Item URL in elib:https://elib.dlr.de/123405/
Document Type:Conference or Workshop Item (Speech)
Title:Crack Morphology in a Columnar Thermal Barrier Coating System
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Gaslain, FabriceCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.dehttps://orcid.org/0000-0002-3952-2928
Guipont, VincentCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Maurel, VincentCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Date:11 June 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermal Barrier Coatings, Columnar Coating, Laser Shock Adhesion Test (LASAT), 3D-Imaging, Focus Ion Beam (FIB), Crack Morphology
Event Title:4th International Congress on 3D Materials Science (3DMS 2018)
Event Location:Helingor, Dänemark
Event Type:international Conference
Event Dates:10-13. Juni 2018
Organizer:The Minerals, Metals & Materials Society (TMS)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:20 Nov 2018 09:05
Last Modified:20 Nov 2018 09:05

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.