Bartsch, Marion and Knipe, Kevin and Manero, Albert and Sofronsky, Stephen and Meid, Carla and Wischek, Janine and Smith, Matthew and Lacdao, Claudine and Okasinski, John and Almer, Jonathan and Karlsson, Anette M. and Raghavan, Seetha (2015) Microstructure characteristics and temperature dependent local elastic response of EB-PVD thermal barrier coatings examined by in-situ synchrotron X-ray diffraction. 39th International Conference & Exposition on Advanced Ceramics & Composites, 2015-01-25 - 2015-01-30, Daytona, U.S.A..
Full text not available from this repository.
Abstract
Elastic properties of the constituents of a coating system are basic input data for stress analyses. In the case of EB-PVD thermal barrier coatings elastic properties of the ceramic topcoat depend on temperature and stress state, with the latter controlled by (1) the assembly of the different layers, (2) the mismatch of their elastic properties and thermal expansion coefficients, (3) their thermal conductivities, (4) the residual stresses and (5) the temperature field. Furthermore, elastic topcoat properties are non-uniform across the coating thickness due to gradients in microstructure parameters such as porosity and column spacing. For determining comprehensive temperature- and stressdependent elastic topcoat properties local strains were measured by means of high energy X-ray diffraction. Tubular coated specimens were loaded with systematically varying thermal and mechanical loads while recording the strains in situ. Test parameters were surface temperature, applied mechanical load, and heat flux through the specimens’ wall, latter controlled by internal cooling of the tubular specimen. The topcoat surface was heated by infrared radiation up to 1000°C. For capturing ageing effects associated to microstructural evolution due to sintering a pre-aged specimen was investigated besides such in as-coated condition.
Item URL in elib: | https://elib.dlr.de/98275/ | ||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Title: | Microstructure characteristics and temperature dependent local elastic response of EB-PVD thermal barrier coatings examined by in-situ synchrotron X-ray diffraction | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Authors: |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||
Date: | 28 January 2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Keywords: | Thermal barrier coating, elastic properties, microstructure, X-ray diffraction | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Event Title: | 39th International Conference & Exposition on Advanced Ceramics & Composites | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Event Location: | Daytona, U.S.A. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Event Start Date: | 25 January 2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Event End Date: | 30 January 2015 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Organizer: | The American Ceramic Society | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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 (old) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Research > Experimental and Numerical Methods | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Deposited By: | Bartsch, Dr.-Ing. Marion | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Deposited On: | 28 Sep 2015 08:53 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 20:03 |
Repository Staff Only: item control page