A new transferable interatomic potential for molecular dynamics simulations of borosilicate glasses

Mengyi Wang, N. M. Anoop Krishnan, Bu Wang, Morten Mattrup Smedskjær, John C. Mauro, Mathieu Bauchy

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

49 Citationer (Scopus)

Abstrakt

Borosilicate glasses are traditionally challenging to model using atomic scale simulations due to the composition and thermal history dependence of the coordination state of B atoms. Here, we report a new empirical interatomic potential that shows a good transferability over a wide range of borosilicate glasses—ranging from pure silicate to pure borate end members—while relying on a simple formulation and a constant set of energy parameters. In particular, we show that our new potential accurately predicts the compositional dependence of the average coordination number of boron atoms, glass density, overall short-range and medium-range order structure, and shear viscosity values for several borosilicate glasses and liquids. This suggests that our new potential could be used to gain new insights into the structure of a variety of advanced borosilicate glasses to help elucidate composition-structure-property relationships—including in complex nuclear waste immobilization glasses.

OriginalsprogEngelsk
TidsskriftJournal of Non-Crystalline Solids
Vol/bind498
Sider (fra-til)294-304
Antal sider11
ISSN0022-3093
DOI
StatusUdgivet - 15 okt. 2018

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