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Title: Cooling rate and stress relaxation in silica melts and glasses via microsecond molecular dyanmics

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We have conducted extremely long molecular dynamics simulations of glasses to microsecond times, which close the gap between experimental and atomistic simulation time scales by two to three orders of magnitude. The static, thermal, and structural properties of silica glass are reported for glass cooling rates down to 5×109 K/s and viscoelastic response in silica melts and glasses are studied over nine decades of time. We finally present results from relaxation of hydrostatic compressive stress in silica and show that time-temperature superposition holds in these systems for temperatures from 3500 to 1000 K.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1235295
Alternate ID(s):
OSTI ID: 1198729
Report Number(s):
SAND-2015-7366J; 603546
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Vol. 92, Issue 01; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 66 works
Citation information provided by
Web of Science

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Cited By (11)

Cooling rate effects in sodium silicate glasses: Bridging the gap between molecular dynamics simulations and experiments journal August 2017
Effects of system size and cooling rate on the structure and properties of sodium borosilicate glasses from molecular dynamics simulations journal January 2018
The hydrophilic-to-hydrophobic transition in glassy silica is driven by the atomic topology of its surface journal February 2018
Atomic picture of structural relaxation in silicate glasses journal June 2019
An efficient computational procedure to obtain a more stable glass structure journal December 2019
A mathematical model for fitting and predicting relaxation modulus and simulating viscoelastic responses journal May 2018
Atomistic insights into the impact of charge balancing cations on the structure and properties of aluminosilicate glasses journal October 2019
Irradiation-driven amorphous-to-glassy transition in quartz: The crucial role of the medium-range order in crystallization journal October 2017
Correlation between IR peak position and bond parameter of silica glass: Molecular dynamics study on fictive temperature (cooling rate) effect journal June 2018
Development of boron oxide potentials for computer simulations of multicomponent oxide glasses journal October 2018
Cooling-Rate Effects in Sodium Silicate Glasses: Bridging the Gap between Molecular Dynamics Simulations and Experiments text January 2017

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