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@ARTICLE{RodrguezLpez:875306,
author = {Rodríguez-López, Sonia and Malzbender, Jürgen and Justo,
Virginia M. and Serbena, Francisco C. and Groß-Barsnick,
Sonja M. and Pascual, Maria J.},
title = {{T}hermo-{M}echanical {S}tability and {G}as-{T}ightness of
{G}lass-{C}eramics {J}oints for {SOFC} in the {S}ystem
{M}g{O}-{B}a{O}/{S}r{O}-{B}2{O}3-{S}i{O}2},
journal = {Frontiers in Materials},
volume = {7},
issn = {2296-8016},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2020-01937},
pages = {19},
year = {2020},
abstract = {The objective of this paper is to illustrate a variety of
studies carried out to improve the quality of some
particular glass-ceramic joining materials based on measured
properties such as gas-tightness and mechanical resistance
and demonstrate the feasibility of using the proposed
materials for solid oxide fuel cells (SOFC) and solid oxide
electrolysis cells (SOEC) applications. First, the sealing
conditions have been optimized for the two selected
compositions in the system MgO-BaO/SrO-B2O3-SiO2. Once the
joining materials have been optimized, the gas-tightness has
been measured as a function of the glass-ceramic
crystallization degree, its thermal cycling behavior and the
influence of a reducing atmosphere on this property. The
electrical resistance at high temperature has also been
studied. Subsequently, the chemical compatibility of the
joints steel/glass-ceramic has been evaluated by means of
the analysis of the cross-sections using SEM and EDX.
Furthermore, the mechanical and chemical stability of the
joints has also been studied as a function of the
crystallization degree, the resistance vs. thermal cycling
and the influence of a reducing atmosphere. Finally, the
mechanical resistance of the joints regarding flexural
loading has been characterized employing a 4-point bending
method both at room temperature and at relevant high
temperatures varying the seal thickness. Overall, the
results verify that the developed and tested materials are
promising for long term stable SOFC and SOEC applications in
advanced stack designs aiding prolonged lifetime under
thermal-cyclic conditions.},
cin = {IEK-2 / ZEA-1},
ddc = {620},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)ZEA-1-20090406},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000517157200001},
doi = {10.3389/fmats.2020.00019},
url = {https://juser.fz-juelich.de/record/875306},
}