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Meeting abstracts 17TH BIENNIALWORLDWIDE CONGRESS 0N REFRACTORIES THE UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES 17th Biennial Worldwide Congress on Refractories UNITECR 2022 March 15-18, 2022 | Chicago, Ill. USA UNITECR 2022: Refractories as a global industry The Unified International Technical Conference on Refractories (UNITECR) is a biennial international conference that contributes to the progress and exchange of industrial knowledge and technologies concerning refractories. UNITECR 2022 will take place March 15–18, 2022, in Chicago, Ill. Below are abstracts from some of the papers that will be presented at the conference. Find the full papers published in International Journal of Ceramic Engineering & Science. Corrosion of bauxite based refractory castables and matrix components in hydrogen containing atmosphere By Tim Leber, Sascha Madeo, Thorsten Tonnesen, and Rainer Telle RWTH Aachen University, Germany in particular the bonding phase was observed by means of SEM and EDS. Microstructural components undergo- ing reaction or loss are identified and explained in regard to complete and incomplete hydrogen combustion. Reduction of impurities such as iron oxides, phosphorus oxides, and titanium oxides are considered in detail. https://doi.org/10.1002/ces2.10111 n Examination of the binary sys- For the transformation to a CO Aero acoustic levitator in operation. observed microstructures. Solidification takes place by formation of several nuclei and subsequent growth. Nuclei are formed in the supercooled melt, entailing to a fine- grained, simultaneously solidified structure. The remaining melt between the growing nuclei is heated due to recalescence, lead- ing to primary precipitation of zirconia followed by eutectic solidification. A con- sistent behavior is presented to explain the observed microstructures. Additionally, samples between 40 and 50 mol% ZrO2 exhibit lamellar areas, which exceed the initial zirconia composition. The observed microstructure strongly indicates the exis- tence of a liquid miscibility gap. https://doi.org/10.1002/ces2.10110 n American Ceramic Society Bulletin, Vol. 101, No. 2 2 tionally fossil-fired furnaces are substituted by the subsequent addition of hydrogen. In these studies, refractory components are identified for the corro- sion of refractories in (highly) reducing atmospheres. A bauxite-based refractory castable is set up in diluted, 9Ar 1H2, hydrogen atmosphere. Additionally, a focus is set on the behavior of a com- mon matrix phase, anorthite. Corrosion experiments up to 1,500°C using a tube furnace with the men- tioned atmosphere have been scheduled. Amount and phase stability due to different time and temperature coor- dinates have been examined by XRD. Furthermore, the microstructure and neutral industry, fuel of tradi- tem Al O -ZrO by aero acoustic 2 3 2 levitation melting 34 By Jonas Niessen, Dirk Muehmer, Thorsten Tonnesen, Rainer Telle, and Jesus Gonzalez-Julian RWTH Aachen University, Germany A The solidification of various hypoeutectic compositions has been studied by means of aero-acoustic levitation. A high-speed camera recorded the crystallization, to the correlation of the video stills with the www.ceramics.org | l2O3-ZrO2 composites exhibit excellent mechanical and high-temperature properties. Credit: Niessen et al., IJCESPDF Image | hydrogen as an alternative fuel
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