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@PHDTHESIS{Skiera:128377,
author = {Skiera, Erik},
title = {{T}hermomechanische {C}harakterisierung neu entwickelter
{F}euerfestwerkstoffe},
volume = {179},
school = {RWTH Aachen},
type = {Dissertation},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2013-00116},
isbn = {978-3-89336-885-3},
series = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
Umwelt / Energy $\&$ Environment},
pages = {120 S.},
year = {2012},
note = {Dissertation, RWTH Aachen, 2012},
abstract = {In high temperature processes in the basic industry, e.g.
steel mining, refractories are applied. To achieve a
sufficient thermal shock resistance carbon containing
refractories are used in steel mining, despite the fact that
the utilization of carbon leads to higher heat losses and
carbon pickup. To reduce the heat loss, to govern the carbon
pickup and to enable innovative process routines for the
clean steel technology novel carbon-reduced and carbon-free
refractories are being developed.To assess the application
potential and to support the ongoing improvement of selected
carbon-reduced and carbon-free refractories the thermal
shock performance is investigated focusing on the
understanding of the microstructural mechanisms of crack
propagation. The thermomechanical investigations concentrate
on controlled crack propagation experiments and thermal
shock tests. Controlled isothermal crack propagation
experiments with macroscopic and microscopic observation are
based on wedge splitting and compact tension test. To
determine the resistance against crack propagation as an
estimation of the potential thermal shock damage analytical
relations have been applied. The thermal shock experiments
focused on upward mode thermal shocks via electron beam
tests facilities. Due to the very fast (ms) upward mode
thermal shock in vacuum in contrast to conventional thermal
shocks in air or water effects related to chemical
interactions can be excluded.Due to a dependency on the
sample size only carbon-free, alumina-based refractories
were investigated. The influence due to the addition of
zirconia and titania is shown. Thermal shock experiments
with electron beam were mainly performed on carboncontaining
refractories, since carbon-free refractories tended to
electrical charging. For the investigated carbon-containing
refractories the thermal shock damage is shown in dependence
of different parameters (duration, number).},
keywords = {Dissertation (GND)},
cin = {IEK-2},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {122 - Power Plants (POF2-122)},
pid = {G:(DE-HGF)POF2-122},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/128377},
}