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Lifetime investigations of new TBC materials

Munawar, Ahmed Umar and Schulz, Uwe (2012) Lifetime investigations of new TBC materials. University-Roma Tre. Research Introduction of International PhD students. , 04-06. Jun. 2012, Rom, Italien. (Unpublished)

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Abstract

Lower thermal conductivity and high temperature stability are the two properties which are highly desired from ceramic top coat materials in TBC systems. Gadolinium Zirconate, Gd2Zr2O7, (GdZ) and Dyprosia Stabilized Zirconia (DySZ) are two of the candidate materials with such properties and consequently the TBC system would be able to work at higher turbine inlet temperature (TIT) or the lifetime can be increased. In the present study, life time measurements are done for the single and double layered Electron Beam Physical Vapor Deposition (EB-PVD) GdZ and DySZ samples by thermal-cycling tests. Both single and double layered samples of GdZ and DySZ have shown similar or better lifetimes than the standard YSZ samples. However, single layered TBCs showed better lifetime results than the respective double layers. In this study, changes in the microstructure, diffusion of elements and sintering of TBC materials with aging are observed.

Item URL in elib:https://elib.dlr.de/79077/
Document Type:Conference or Workshop Item (Speech)
Title:Lifetime investigations of new TBC materials
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Munawar, Ahmed Umarahmed.munawar (at) dlr.deUNSPECIFIED
Schulz, UweUwe.Schulz (at) dlr.deUNSPECIFIED
Date:March 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:University-Roma Tre
Status:Unpublished
Keywords:Thermal Barrier Coatings, Gadolinium-zirconate, Dysprosia-stabilized zirconia, jet engines
Event Title:Research Introduction of International PhD students.
Event Location:Rom, Italien
Event Type:Other
Event Dates:04-06. Jun. 2012
Organizer:Ahmed Umar Munawar
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > High Temperature and Functional Coatings
Deposited By: Munawar, Ahmed Umar
Deposited On:03 Dec 2012 11:20
Last Modified:03 Dec 2012 11:20

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