Slag Corrosion of Preceramic Paper Derived Multilayer Oxide Refractory

Andreas Richter1, Matthias Göbbels1, Björn Gutbrod2, Nahum Travitzky2, Peter Greil2

1 Applied Mineralogy GeoZentrum Nordbayern, University of Erlangen-Nürnberg, 91054 Erlangen/Germany
2 Department of Materials Science and Engineering (Glass and Ceramics) and ZMP, University of Erlangen-Nürnberg, 91058 Erlangen/Germany

Revision 06.08.2012, 14.08.2012

Volume 4, Issue 4, Pages 103 - 109


Multilayer oxide ceramics of variable compositions were fabricated from preceramic paper to substitute carbon-bonded refractory. Alternating layers of ZrO2,Al2O3–ZrO2 and Al2O3–MgAl2O4 preceramic paper were bonded with a zirconia based interface adhesive layer and co-sintered at 1700 °C. The porous multilayer refractory structures were exposed to an industrial CaO–Fe2O3–SiO2-slag melt at 1390 °C and the corrosion degradation mechanisms were analyzed. Progression of the corrosion zone is dominated by a layer-by-layer infiltration and dissolution reaction process. Zirconia laminates were found to exhibit superior corrosion resistance. Enhanced dissolution of interface layers was observed in the alumina-zirconia system. A pronounced volume expansion effect caused accelerated degradation in the alumina-spinel based system. ZrO2 based interface bonding layers of lower porosity compared to the preceramic paper derived ceramic layers may improve corrosion resistance. Manufacturing of multilayer refractory structures from preceramic paper of various compositions offers high flexibility in stacking design optimization in order to adopt corrosion resistance to local environmental conditions.


preceramic paper, multi-layered, refractories, slag corrosion


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