Effect of minor additions on structure and volatilization loss in simulated nuclear borosilicate glasses

Parkinson, B.G. and Holland, D. and Smith, M.E. and Howes, A.P. and Scales, C.R. (2007) Effect of minor additions on structure and volatilization loss in simulated nuclear borosilicate glasses. Journal of Non-Crystalline Solids, 353 (44-46). pp. 4076-4083. ISSN 0022-3093

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Abstract

Structural and thermal properties are reported for a range of caesium oxide-containing alkali borosilicate glasses, of the form xCs2O(100 - x)ZMW (0 < x < 10), where ZMW represents a variety of simulated base-glasses. Glass densities increase and glass transition temperatures decrease with increase in caesium oxide concentration. Mass-loss from the melt is found to depend on composition in the same manner as the fraction of silicon Q3 units, resolved from 29Si MAS NMR, and is related to the presence of danburite medium-range order units, resolved from 11B MAS NMR. Volatilization is shown to occur even in the absence of caesium oxide and the mixed alkali borosilicate composition of the volatile species, evolved from the melt at high temperature, is independent of the starting composition of the glass. © 2007 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:
ID Code:
130317
Deposited By:
Deposited On:
04 Jan 2019 12:25
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 11:44