The effect of Cs2O additions on HLW wasteform glasses

Parkinson, B.G. and Holland, D. and Smith, M.E. and Howes, A.P. and Scales, C.R. (2005) The effect of Cs2O additions on HLW wasteform glasses. Journal of Non-Crystalline Solids, 351 (30-32). pp. 2425-2432. ISSN 0022-3093

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Abstract

Physical parameters and structural characteristics are reported for the mixed alkali borosilicate glass system, xCs2O(100 - x)(MW) (0 ≤ x ≤ 9.66) where MW is the BNFL wasteform glass (10.29 mol% Li2O, 10.53 mol% Na2O, 18.57 mol% B2O3, 60.61 mol% SiO2). Glass density was found to increase with x whilst the glass transition temperature (Tg) decreased. The fraction of four-coordinated boron (N4) determined from 11B magic angle spinning nuclear magnetic resonance (MAS NMR) increased with x in a manner consistent with previous reports on the sodium-lithium-borosilicate system and contrary to the Dell model. 29Si MAS NMR was used to identify the fraction of Q4 (B) and Q3 units as a function of x. Raman spectra indicated the presence of reedmergnerite and danburite superstructural units. Mass loss measurements showed a non-linear variation with x, having a maximum between 7 and 8 mol% Cs2O and a correlation was found between the amount of Q3 units in the solid and the volatilization loss from the melt. © 2005 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Journal or Publication Title: Journal of Non-Crystalline Solids
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
Departments: VC's Office
ID Code: 130323
Deposited By: ep_importer_pure
Deposited On: 04 Jan 2019 11:10
Refereed?: Yes
Published?: Published
Last Modified: 30 Sep 2019 21:33
URI: https://eprints.lancs.ac.uk/id/eprint/130323

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