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@ARTICLE{Schupsky:875237,
author = {Schupsky, Jan Peter and Guo, Muxing and Blanpain, Bart and
Müller, Michael},
title = {{T}he {I}mpact of {S}ample {H}omogeneity, {C}rucible
{M}aterial, and {O}xygen {P}artial {P}ressure on the
{C}rystallization of {F}e-{R}ich {O}xidic {S}lag in {CLSM}
{E}xperiments},
journal = {Journal of sustainable metallurgy},
volume = {6},
issn = {2199-3831},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2020-01886},
pages = {216–226},
year = {2020},
abstract = {Crystallization tendency and the state of oxidic slags are
important influencing factors for slag viscosity and
therefore slag tapping. During the gasification process slag
is constantly produced and flows down the gasifier walls
until it is intercepted and stored for further treatment or
a possible valorisation. The kinds of fuel used for
gasification lead to different kinds of slag composition
likewise. Slag viscosity is strongly influenced by the
composition of the slag and the temperature. However, the
process of crystallization represents another major
influencing factor. Slag crystallization is also affected by
several parameters, whose effects need to be considered in
experimental studies. This study investigated the impact of
the sample state, the chosen crucible material, and the
oxygen partial pressure on the crystallization of a Fe-rich
oxidic slag in the confocal laser scanning microscope (CLSM)
experiment. Using sample powder may lead to heterogeneous
nucleation and crystallization during heating due to
heterogeneous melting of the compounds. The selection of
crucible material is crucial to prevent alloy formation of
Fe-species with Pt-crucibles under reducing atmosphere.
Finally, the partial pressure of oxygen influences the
crystallization tendency as well as the morphology of the
crystallized phases. These parameters impede the
reproducibility of results as well as the comparison with
results deriving from other experiments like sample
quenching. This contribution provides an enhanced
understanding of the stated parameter effects on the
experimental investigation of oxidic slags using the CLSM
setup and yields advice to prevent experimental influence on
the results.},
cin = {IEK-2 / IEK-12},
ddc = {540},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-12-20141217},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000515726300001},
doi = {10.1007/s40831-020-00262-x},
url = {https://juser.fz-juelich.de/record/875237},
}