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@ARTICLE{Cernuschi:16595,
author = {Cernuschi, F. and Lorenzoni, L. and Capelli, S. and
Guardamagna, C. and Karger, M. and Vaßen, R. and von
Niessen, K. and Markocsan, N. and Menuey, J. and Giolli, C.},
title = {{S}olid particle erosion of thermal spray and physical
vapour deposition thermal barrier coatings},
journal = {Wear},
volume = {271},
issn = {0043-1648},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-16595},
year = {2011},
note = {This work was partially supported by the EC ("TOPPCOAT",
project no. AST4-CT-2005-516149).This work has been
partially financed by the Research Fund for the Italian
Electrical System under the contract agreement between RSE
(formerly known as ERSE) and the Ministry of Economic
Development-General Directorate for Nuclear Energy,
Renewable Energy and Energy Efficiency stipulated on July
29, 2009 in compliance with the Decree of March 19, 2009.},
abstract = {Thermal barrier coatings (TBC) are used to protect hot path
components of gas turbines from hot combustion gases. For a
number of decades, in the case of aero engines TBCs are
usually deposited by electron beam physical vapour
deposition (EB-PVD). EB-PVD coatings have a columnar
microstructure that guarantees high strain compliance and
better solid particle erosion than PS TBCs. The main
drawback of EB-PVD coating is the deposition cost that is
higher than that of air plasma sprayed (APS) TBC. The major
scientific and technical objective of the UE project
TOPPCOAT was the development of improved TBC systems using
advanced bonding concepts in combination with additional
protective functional coatings. The first specific objective
was to use these developments to provide a significant
improvement to state-of-the-art APS coatings and hence
provide a cost-effective alternative to EB-PVD. In this
perspective one standard porous APS, two segmented APS, one
EB-PVD and one PS-PVD (TM) were tested at 700 degrees C in a
solid particle erosion jet tester, with EB-PVD and standard
porous APS being the two reference systems.Tests were
performed at impingement angles of 30 degrees and 90
degrees, representative for particle impingement on trailing
and leading edges of gas turbine blades and vanes,
respectively. Microquartz was chosen as the erodent being
one of the main constituents of sand and fly volcanic ashes.
After the end of the tests, the TBC microstructure was
investigated using electron microscopy to characterise the
failure mechanisms taking place in the TBC.It was found that
PS-PVD (TM) and highly segmented TBCs showed erosion rates
comparable or better than EB-PVD samples. (C) 2011 Elsevier
B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {Rationelle Energieumwandlung},
pid = {G:(DE-Juel1)FUEK402},
shelfmark = {Engineering, Mechanical / Materials Science,
Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000294936000024},
doi = {10.1016/j.wear.2011.06.013},
url = {https://juser.fz-juelich.de/record/16595},
}