Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: Journal of American Ceramic Society, Cyfrol 96, Rhif 5, 01.05.2013, t. 1450-1455.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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TY - JOUR
T1 - Predicted Mechanism for Enhanced Durability of Zinc Containing Silicate Glasses
AU - Stechert, T. R.
AU - Rushton, M. J. D.
AU - Grimes, R. W.
PY - 2013/5/1
Y1 - 2013/5/1
N2 - Experimental studies have reported that zinc oxide improves the durability of glasses used for nuclear waste immobilization. Here, molecular dynamics simulations are used to predict the atomic structures of sodium silicate glass with and without zinc. A simulated melt-quench procedure is used to generate glass structures. Pair distribution functions, ring size distributions, and alkali clustering are then examined. This allows insights into the structural role of zinc oxide within the glass and helps distinguish between its reported functions as a network former and a network modifier. Changes in the sodium ion distribution and clustering behavior within the glass are observed, due to zinc oxide addition. This affects the local and intermediate-range structure of the glass and provides a possible explanation for enhanced durability.
AB - Experimental studies have reported that zinc oxide improves the durability of glasses used for nuclear waste immobilization. Here, molecular dynamics simulations are used to predict the atomic structures of sodium silicate glass with and without zinc. A simulated melt-quench procedure is used to generate glass structures. Pair distribution functions, ring size distributions, and alkali clustering are then examined. This allows insights into the structural role of zinc oxide within the glass and helps distinguish between its reported functions as a network former and a network modifier. Changes in the sodium ion distribution and clustering behavior within the glass are observed, due to zinc oxide addition. This affects the local and intermediate-range structure of the glass and provides a possible explanation for enhanced durability.
U2 - 10.1111/jace.12308
DO - 10.1111/jace.12308
M3 - Erthygl
VL - 96
SP - 1450
EP - 1455
JO - Journal of American Ceramic Society
JF - Journal of American Ceramic Society
SN - 0002-7820
IS - 5
ER -