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@ARTICLE{Korte:908220,
author = {Korte, Carsten and Franz, Bernhard},
title = {{R}eaction kinetics in the system {Y}2{O}3/{A}l2{O}3 –
{U}se of an external electric field to control the product
phase formation in a system forming multiple product phases},
journal = {Solid state ionics},
volume = {383},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2022-02471},
pages = {115978 -},
year = {2022},
abstract = {This study investigates the influence of an external
electric field on the kinetics of a heterogeneous solid
state reaction between Al2O3 and Y2O3. The reaction couples
were prepared by means of pulsed laser deposition (PLD) by
growing Y2O3 films on single crystalline alumina substrates
with an (0001) orientation. The solid state reaction was
performed at a temperature of 1400° (1673 K). Utilising
attached platinum electrodes, an electric field of 350 V/mm
was applied. The superposed field led to an ionic current
through the reacting sample and modifies the individual
growth kinetics of the three product phases/layers, Y3Al5O12
(YAG), YAlO3 (YAP) and Y4Al2O9 (YAM) The cross-sections of
the reacted samples were characterised by means of SEM and
XRD. Depending on the direction of the ionic current, the
kinetics of the YAP phase formation in particular was
strongly influenced. The general kinetics of a solid state
reaction forming multiple product phases was analysed using
linear transport theory. The effect of an electric field for
controlling the product phase formation to prefer or to
kinetically suppress the formation of a distinct phase is
demonstrated.},
cin = {IEK-14},
ddc = {530},
cid = {I:(DE-Juel1)IEK-14-20191129},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123)},
pid = {G:(DE-HGF)POF4-1231},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000822940400001},
doi = {10.1016/j.ssi.2022.115978},
url = {https://juser.fz-juelich.de/record/908220},
}