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Title: Fracture mechanisms of sodium silicate glasses

Journal Article · · International Journal of Applied Glass Science
DOI:https://doi.org/10.1111/ijag.16594· OSTI ID:1877136
ORCiD logo [1];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Reactive classical molecular dynamics simulations of sodium silicate glasses, xNa2O–(100 – x)SiO2 (x = 10–30), under quasi-static loading, were performed for the analysis of molecular scale fracture mechanisms. Mechanical properties of the sodium silicate glasses were consistent with experimentally reported values, and the amount of crack propagation varied with reported fracture toughness values. The most crack propagation occurred in NS20 systems (20-mol% Na2O) compared with the other simulated compositions. Dissipation via two mechanisms, the first through sodium migration as a lower activation energy process and the second through structural rearrangement as a higher activation energy process, was calculated and accounted for the energy that was not stored elastically or associated with the formation of new fracture surfaces. Here, a correlation between crack propagation and energy dissipation was identified, with systems with higher crack propagation exhibiting less energy dissipation. Sodium silicate glass compositions with lower energy dissipation also exhibited the most sodium movement and structural rearrangement within 10 Å of the crack tip during loading. Therefore, high sodium mobility near the crack tip may enable energy dissipation without requiring formation of structural defects. Therefore, the varying mobilities of the network modifiers near crack tips influence the brittleness and the crack growth rate of modified amorphous oxide systems.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525
OSTI ID:
1877136
Report Number(s):
SAND2022-8630J; 707616
Journal Information:
International Journal of Applied Glass Science, Vol. 14, Issue 1; ISSN 2041-1286
Publisher:
American Ceramic SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (58)

Primary and secondary phase separation of sodium silicate glasses journal December 1968
Cooling rate effects in sodium silicate glasses: Bridging the gap between molecular dynamics simulations and experiments journal August 2017
Surface Structure and Stability of Partially Hydroxylated Silica Surfaces journal April 2017
Nanoductility in silicate glasses is driven by topological heterogeneity journal February 2016
Local structures of MD-modeled vitreous silica and sodium silicate glasses journal May 2001
Molecular dynamics simulations of atomic-level brittle fracture mechanisms in amorphous silica journal March 2007
A unified study of crack propagation in amorphous silica: Using experiments and simulations journal May 2007
Chemical Effects on Subcritical Fracture in Silica From Molecular Dynamics Simulations journal November 2018
Inert failure strain studies of sodium silicate glass fibers journal December 2004
Mechanisms of Silica Fracture in Aqueous Electrolyte Solutions journal April 2019
Raman spectroscopic investigation of the structure of silicate glasses. III. Raman intensities and structural units in sodium silicate glasses journal October 1981
Order and disorder in sodium silicate glasses and melts at 10 GPa: ORDER AND DISORDER IN SODIUM SILICATE GLASSES journal August 2003
ReaxFF Reactive Force Field for Molecular Dynamics Simulations of Hydrocarbon Oxidation journal February 2008
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Glass Breaks like Metal, but at the Nanometer Scale journal February 2003
Bulk, surface structures and properties of sodium borosilicate and boroaluminosilicate nuclear waste glasses from molecular dynamics simulations journal November 2017
Microstructural evaluation of simulated sodium silicate glasses journal September 1991
Raman spectra of vitreous silica, germania and sodium silicate glasses journal March 1970
Sodium effect on static mechanical behavior of MD-modeled sodium silicate glasses journal May 2016
A New Self-Consistent Empirical Interatomic Potential Model for Oxides, Silicates, and Silica-Based Glasses journal June 2006
Electronic structures and physical properties of Na 2 O doped silicate glass journal June 2017
Low dielectric constant materials for microelectronics journal June 2003
Atomistic Aspects of Crack Propagation in Brittle Materials: Multimillion Atom Molecular Dynamics Simulations journal August 2002
Interaction and coalescence of nanovoids and dynamic fracture in silica glass: multimillion-to-billion atom molecular dynamics simulations journal October 2009
Study of dynamics and structure in sodium silicate glasses. Molecular dynamics simulation. journal April 2022
The application of an atomistic J -integral to a ductile crack journal March 2013
The influence of the network topology on the deformation and fracture behaviour of silica glass: A molecular dynamics study journal June 2018
Fracture toughness of calcium–silicate–hydrate from molecular dynamics simulations journal July 2015
Fracture toughness anomalies: Viewpoint of topological constraint theory journal December 2016
Inelastic relaxation in silica via reactive molecular dynamics journal November 2021
Development of a ReaxFF Reactive Force Field for NaSiO x /Water Systems and Its Application to Sodium and Proton Self-Diffusion journal July 2018
Continuum stress intensity factors from atomistic fracture simulations journal September 2019
Advancing the Mechanical Performance of Glasses: Perspectives and Challenges journal February 2022
Fracture toughness-composition relationship in some binary and ternary glass systems journal August 1980
Glasses as engineering materials: A review journal April 2011
Molecular dynamics simulation of amorphous silica under uniaxial tension: From bulk to nanowire journal December 2012
Molecular Dynamics Studies of Stress−Strain Behavior of Silica Glass under a Tensile Load journal July 2008
Molecular Dynamics Simulation of the Structure and Hydroxylation of Silica Glass Surfaces journal September 2005
Molecular dynamics study of brittle fracture in silica glass and cristobalite journal March 1995
Singular behaviour at the end of a tensile crack in a hardening material journal January 1968
Dynamics of Fracture in Silica and Soda-Silicate Glasses: From Bulk Materials to Nanowires journal October 2015
Interaction of NaOH solutions with silica surfaces journal April 2018
Water Interactions with Nanoporous Silica: Comparison of ReaxFF and ab Initio based Molecular Dynamics Simulations journal October 2016
Alkali ion migration mechanisms in silicate glasses probed by molecular dynamics simulations journal June 2002
Nanoscale damage during fracture in silica glass journal July 2006
ReaxFF:  A Reactive Force Field for Hydrocarbons journal October 2001
Structural features of sodium silicate glasses from reactive force field‐based molecular dynamics simulations journal October 2019
Interfacial Structure and Evolution of the Water–Silica Gel System by Reactive Force-Field-Based Molecular Dynamics Simulations journal May 2017
Molecular dynamics simulations of the structure and mechanical properties of silica glass using ReaxFF journal July 2016
Molecular dynamics studies of brittle fracture in vitreous silica: Review and recent progress journal June 2005
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Revisiting silica with ReaxFF: Towards improved predictions of glass structure and properties via reactive molecular dynamics journal July 2016
Crack propagation in silica from reactive classical molecular dynamics simulations journal November 2017
The medium range structure of sodium silicate glasses: a molecular dynamics simulation journal December 2004
Sub-critical crack growth in silicate glasses: Role of network topology journal October 2015
Indentation fracture: principles and applications journal June 1975
The structure of sodium silicate glass journal December 1990
A molecular dynamic calculation of the structure of sodium silicate glasses journal December 1979

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