Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Effect of minor additions on structure and volatilization loss in simulated nuclear borosilicate glasses
AU - Parkinson, B.G.
AU - Holland, D.
AU - Smith, M.E.
AU - Howes, A.P.
AU - Scales, C.R.
PY - 2007/11/15
Y1 - 2007/11/15
N2 - 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.
AB - 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.
KW - Borosilicates
KW - Glasses
KW - Medium-range order
KW - NMR, MAS NMR and NQR
KW - Nuclear and chemical wastes
KW - Nuclear magnetic (and quadrupole) resonance
KW - Oxide glasses
KW - Resonance methods
KW - Structure
KW - Density (specific gravity)
KW - Microstructure
KW - Nuclear magnetic resonance
KW - Vaporization
KW - Borosilicate glass
U2 - 10.1016/j.jnoncrysol.2007.06.016
DO - 10.1016/j.jnoncrysol.2007.06.016
M3 - Journal article
VL - 353
SP - 4076
EP - 4083
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 44-46
ER -