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Self-Healing Plasma Sprayed Ceramic Coatings

Ilhan, Zeynep and Hornes, Aitor and Sata, Noriko and Freitag, Thomas Oliver and Ansar, Asif and Schiller, Günter and Friedrich, K. Andreas and Guski, Vinzenz and Weber, U. and Krebs, A. and Schmauder, S. (2015) Self-Healing Plasma Sprayed Ceramic Coatings. ASM International. ITSC 2015, May 11–14, 2015, Long Beach, California, USA.

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Abstract

The current paper reports self-healing plasma sprayed Mgspinel (MgAl2O4) coatings. The coatings were used for electrical insulation in high temperature fuel cells. A range of potential self-healing additives consisting of SiC+X (where X was BaO, CaO, ZnO, Y2O3, GeO2, Ta2O5, V2O5) were characterized and SiC+Y2O3 was initially selected for coating development. Coatings of spinel with 20wt% additive were developed using vacuum plasma spraying (VPS) or atmospheric plasma spraying (APS). In the developed coatings, self-healing was demonstrated after heat treatment at 1050°C in air for 10 hour. Thermophysical and thermomechanical properties of self-healing coatings were determined and compared to spinel coatings. Lastly, a modelling technique is presented to simulate the effective elastic moduli of the coatings. Numerical results based on microstructural simulations showed good agreement with experimental data.

Item URL in elib:https://elib.dlr.de/98683/
Document Type:Conference or Workshop Item (Speech)
Title:Self-Healing Plasma Sprayed Ceramic Coatings
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ilhan, Zeynepzeynep.ilhan (at) dlr.deUNSPECIFIED
Hornes, Aitoraitor.hornesmartinez (at) dlr.deUNSPECIFIED
Sata, NorikoNoriko.Sata (at) dlr.deUNSPECIFIED
Freitag, Thomas OliverThomas.Freitag (at) dlr.deUNSPECIFIED
Ansar, Asifasif.ansar (at) dlr.deUNSPECIFIED
Schiller, Günterguenter.schiller (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Guski, VinzenzIMWF, Uni. StuttgartUNSPECIFIED
Weber, U.IMWF, Uni. StuttgartUNSPECIFIED
Krebs, A.IMWF, Uni. StuttgartUNSPECIFIED
Schmauder, S.IMWF, Uni. StuttgartUNSPECIFIED
Date:2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1138-1147
Publisher:ASM International
Status:Published
Keywords:Self-healing, Plasam spray
Event Title:ITSC 2015
Event Location:Long Beach, California, USA
Event Type:international Conference
Event Dates:May 11–14, 2015
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Metzger-Sata, Dr. Noriko
Deposited On:22 Oct 2015 12:49
Last Modified:31 Jul 2019 19:55

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