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@INPROCEEDINGS{Koch:201728,
author = {Koch, Denise and Sohn, Yoo Jung and Vassen, Robert},
title = {{A}tmospheric plasma spraying of self-healing thermal
barrier coatings},
reportid = {FZJ-2015-04022},
year = {2015},
abstract = {The state-of-the-art material for the topcoat of thermal
barrier coatings (TBCs) is yttria stabilized zirconia (YSZ).
Due to induced stresses while thermal cycling, cracks
develop near the thermally grown oxide layer (TGO), which
can cause delamination. In the described approach a
self-healing TBC will be created by embedding MoSi2 in the
topcoat. The developed cracks will be refilled due to
oxidation and the accompanying volume expansion. By this the
lifetime of TBCs can be improved. As the topcoat still
consists of YSZ the TBC is expected to have the advantages
of the state-of-the-art material and the described
self-healing ability. The processing parameters to produce
composite YSZ/MoSi2 coatings by atmospheric plasma spraying
(APS) have been studied. A major challenge are the different
characteristics of MoSi2 and YSZ in terms of melting
temperature and oxidation behavior. The quality of the
coatings has been evaluated by X-ray powder diffraction and
scanning electron microscopy.},
month = {May},
date = {2015-05-11},
organization = {International Thermal Spray Conference
and Exposition, Long Beach, CA (USA),
11 May 2015 - 14 May 2015},
subtyp = {Invited},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113) / HITEC - Helmholtz Interdisciplinary Doctoral
Training in Energy and Climate Research (HITEC)
(HITEC-20170406)},
pid = {G:(DE-HGF)POF3-113 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/201728},
}