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@ARTICLE{Nowak:173270,
author = {Nowak, Wojciech and Naumenko, Dmitry and Mor, G. and Mor,
F. and Mack, Daniel Emil and Vassen, Robert and Singheiser,
Lorenz},
title = {{E}ffect of {P}rocessing {P}arameters on {MC}r{A}l{Y}
{B}ondcoat {R}oughness and {L}ifetime of {APS}-{TBC}
{S}ystems},
journal = {Surface and coatings technology},
volume = {260},
issn = {0257-8972},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-06681},
pages = {82-89},
year = {2014},
abstract = {In the present work it is shown that the lifetime of air
plasma sprayed thermal barrier coatings systems with high
velocity oxyfuel bondcoats can be substantially extended by
application of a thin air plasma sprayed “flashcoat”
layer onto the base, high velocity oxyfuel bondcoat. This
approach allows improvement of the bondcoat roughness
profile to the extent typically obtained by optimized vacuum
plasma spraying. The oxidation resistance of the flashcoat
strongly depends on the spray parameters used. Deviation
from the set of the optimized spray parameters was found to
result in early catastrophic oxidation of the flashcoat and
corresponding very rapid thermal barrier coating-failure. In
order to explain the thermal barrier coating lifetime
variations between the various bondcoat morphologies, the
roughness profiles of high velocity oxyfuel, vacuum plasma
sprayed and air plasma sprayed bondcoats were evaluated
using fractal analysis. It is suggested that such an
approach provides better correlation between the bondcoat
morphology and thermal barrier coating-lifetime than the
calculation of the arithmetic mean roughness (Ra) of the
bondcoat frequently used in industrial practice.},
cin = {IEK-2 / IEK-1},
ddc = {620},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-1-20101013},
pnm = {122 - Power Plants (POF2-122)},
pid = {G:(DE-HGF)POF2-122},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000347584300014},
doi = {10.1016/j.surfcoat.2014.06.075},
url = {https://juser.fz-juelich.de/record/173270},
}