Toperesu, PM, Kale, GM orcid.org/0000-0002-3021-5905, Daji, J et al. (1 more author) (2021) Development and evolution of a novel (Zr1-xSnx)O2 toughened alumina-mullite slip cast refractory: Effect of SnO2. Journal of the European Ceramic Society, 41 (3). pp. 2134-2144. ISSN 0955-2219
Abstract
Zr1-xSnxO2 reinforced alumina-mullite refractory was manufactured by slip cast methods using SnO2 as a sintering agent. SnO2 had considerable influence in the enhanced reaction kinetics of zircon dissociation and subsequent reaction sintering of alumina and zircon. Presence of pro-eutectic transient Al2O3-SnO2 liquid and SnO2-SiO2-ZrO2 amorphous phases, enhanced densification and mullitisation through liquid phase sintering and, mitigated SnO2 volatilisation by (Zr1-xSnx)O2 solid-solution formation. Based on their morphology and aspect ratios, three types of mullite crystals, MI, MII and MIII, were evolved across the matrix microstructure. Characterization of the evolved microstructure revealed coalescence and grain growth of matrix alumina grains including the presence of an acicular tertiary MIII mullite which acts as both a reinforcement and bridging network of matrix to aggregate grains. SnO2 had the effect of lowering the monoclinic – tetragonal phase transformation temperature. Hot flexural strength values remained nearly unchanged (±2%) compared with the AZS composition without SnO2 doping.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier Ltd. All rights reserved.. This is an author produced version of an article published in Journal of the European Ceramic Society. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Tin IV oxide; Reinforced acicular mullite; Alumina; Zr1-xSnxO2solid solution; Refractories |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Mar 2021 12:18 |
Last Modified: | 02 Nov 2021 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jeurceramsoc.2020.10.070 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:172349 |
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