WILDING, Martin, BENMORE, C. J. and WEBER, J. K. R. (2010). High-Energy X-ray Diffraction from Aluminosilicate Liquids. Journal of Physical Chemistry B, 114 (17), 5742-5746.
Full text not available from this repository.Abstract
Containerless high energy X-ray diffraction measurements have been performed on molten Al2O3−SiO2 as a function of composition. The data show a strong distortion of the SiO4 tetrahedral units and a breakdown of intermediate range order as alumina is added. For silica-rich compositions, the X-ray pair distribution functions are consistent with the presence of 4-fold oxygen triclusters predicted by molecular dynamics simulations, where these liquids exhibit relatively high viscosities compared to other binary silicates. For higher alumina content liquids, the average cation−oxygen coordination number gradually increases with increasing Al2O3 content, but the pair distribution functions change very little with composition, suggesting the increased presence of disordered AlOn (n = 4,5,6) polyhedra are associated with low viscosity melts. A comparison of the liquid and glassy X-ray pair distributions functions at the alumina-rich mullite composition indicate a significant distortion of the polyhedra in the melt, suggesting structural changes are temperature dependent.
Item Type: | Article |
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Research Institute, Centre or Group - Does NOT include content added after October 2018: | Materials and Engineering Research Institute > Engineering Research |
Departments - Does NOT include content added after October 2018: | Faculty of Science, Technology and Arts > Department of Engineering and Mathematics |
Identification Number: | https://doi.org/10.1021/jp907587e |
Page Range: | 5742-5746 |
Depositing User: | Martin Wilding |
Date Deposited: | 03 Jul 2018 14:56 |
Last Modified: | 18 Mar 2021 11:45 |
URI: | https://shura.shu.ac.uk/id/eprint/21487 |
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