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@ARTICLE{Singh:834823,
author = {Singh, R. and Rauwald, K.-H. and Wessel, E. and Mauer, G.
and Schruefer, S. and Barth, A. and Wilson, S. and Vassen,
R.},
title = {{E}ffects of substrate roughness and spray-angle on
deposition behavior of cold-sprayed {I}nconel 718},
journal = {Surface and coatings technology},
volume = {319},
issn = {0257-8972},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-04714},
pages = {249 - 259},
year = {2017},
abstract = {In this study, Inconel 718 powder particles were
successfully cold-sprayed on Inconel 718 substrate by using
nitrogen gas for a repair application of aero engine
components. The effects of substrate roughness and
spray-angle on the deposition behavior of Inconel 718
particles were investigated. It has been found that the
deposition behavior of Inconel 718 powder on Inconel 718
substrates is highly influenced by substrate surface
roughness. Single powder particle interaction with
substrates of different roughness showed that plastic
deformation and interfacial material mixing is higher if
powder particles interact with substrates of higher
roughness. Consequently, substrates with lower roughness
demonstrated many abnormalities (e.g. cracks, peeling-off)
during the deposition. Substrate roughness is limited to
influence the deposition efficiency of the first few layers.
Besides, it is also observed that particle deformation and
coating quality are significantly affected by the
spray-angle because of asymmetric deformation of the
particle due to additional tangential momentum. Moreover, it
is observed that deposition efficiency is reduced with a
decrease in spray-angle, while the coating porosity and
coating roughness show an inverse trend. Furthermore, the
effects of three input parameters, namely substrate
preparation, spray angle and stand-off distance, on four
outputs (responses), such as thickness, roughness, porosity
and Vickers-hardness of the coating were studied using
non-linear statistical regression analysis. The above
mentioned four outputs were found to be significantly
dependent on substrate preparation and spray-angle.},
cin = {IEK-1 / IEK-2},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000402357300029},
doi = {10.1016/j.surfcoat.2017.03.072},
url = {https://juser.fz-juelich.de/record/834823},
}