Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression

Michael Guerette, Michael R. Ackerson, Jay Thomas, Fenglin Yuan, E. Bruce Watson, David Walker, Liping Huang

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Silica glass has been shown in numerous studies to possess significant capacity for permanent densification under pressure at different temperatures to form high density amorphous (HDA) silica. However, it is unknown to what extent the processes leading to irreversible densification of silica glass in cold-compression at room temperature and in hot-compression (e.g., near glass transition temperature) are common in nature. In this work, a hot-compression technique was used to quench silica glass from high temperature (1100 °C) and high pressure (up to 8 GPa) conditions, which leads to density increase of ∼25% and Young's modulus increase of ∼71% relative to that of pristine silica glass at ambient conditions. Our experiments and molecular dynamics (MD) simulations provide solid evidences that the intermediate-range order of the hot-compressed HDA silica is distinct from that of the counterpart cold-compressed at room temperature. This explains the much higher thermal and mechanical stability of the former than the latter upon heating and compression as revealed in our in-situ Brillouin light scattering (BLS) experiments. Our studies demonstrate the limitation of the resulting density as a structural indicator of polyamorphism, and point out the importance of temperature during compression in order to fundamentally understand HDA silica.

Original languageEnglish (US)
Article number15343
JournalScientific Reports
Volume5
DOIs
StatePublished - Oct 15 2015
Externally publishedYes

Fingerprint

silica glass
densification
silicon dioxide
room temperature
glass transition temperature
modulus of elasticity
light scattering
thermal stability
molecular dynamics
heating
temperature
simulation

ASJC Scopus subject areas

  • General

Cite this

Guerette, M., Ackerson, M. R., Thomas, J., Yuan, F., Watson, E. B., Walker, D., & Huang, L. (2015). Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression. Scientific Reports, 5, [15343]. https://doi.org/10.1038/srep15343

Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression. / Guerette, Michael; Ackerson, Michael R.; Thomas, Jay; Yuan, Fenglin; Watson, E. Bruce; Walker, David; Huang, Liping.

In: Scientific Reports, Vol. 5, 15343, 15.10.2015.

Research output: Contribution to journalArticle

Guerette, Michael ; Ackerson, Michael R. ; Thomas, Jay ; Yuan, Fenglin ; Watson, E. Bruce ; Walker, David ; Huang, Liping. / Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression. In: Scientific Reports. 2015 ; Vol. 5.
@article{b9cb7dd886c9408487406d95695c16fe,
title = "Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression",
abstract = "Silica glass has been shown in numerous studies to possess significant capacity for permanent densification under pressure at different temperatures to form high density amorphous (HDA) silica. However, it is unknown to what extent the processes leading to irreversible densification of silica glass in cold-compression at room temperature and in hot-compression (e.g., near glass transition temperature) are common in nature. In this work, a hot-compression technique was used to quench silica glass from high temperature (1100 °C) and high pressure (up to 8 GPa) conditions, which leads to density increase of ∼25{\%} and Young's modulus increase of ∼71{\%} relative to that of pristine silica glass at ambient conditions. Our experiments and molecular dynamics (MD) simulations provide solid evidences that the intermediate-range order of the hot-compressed HDA silica is distinct from that of the counterpart cold-compressed at room temperature. This explains the much higher thermal and mechanical stability of the former than the latter upon heating and compression as revealed in our in-situ Brillouin light scattering (BLS) experiments. Our studies demonstrate the limitation of the resulting density as a structural indicator of polyamorphism, and point out the importance of temperature during compression in order to fundamentally understand HDA silica.",
author = "Michael Guerette and Ackerson, {Michael R.} and Jay Thomas and Fenglin Yuan and Watson, {E. Bruce} and David Walker and Liping Huang",
year = "2015",
month = "10",
day = "15",
doi = "10.1038/srep15343",
language = "English (US)",
volume = "5",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Structure and Properties of Silica Glass Densified in Cold Compression and Hot Compression

AU - Guerette, Michael

AU - Ackerson, Michael R.

AU - Thomas, Jay

AU - Yuan, Fenglin

AU - Watson, E. Bruce

AU - Walker, David

AU - Huang, Liping

PY - 2015/10/15

Y1 - 2015/10/15

N2 - Silica glass has been shown in numerous studies to possess significant capacity for permanent densification under pressure at different temperatures to form high density amorphous (HDA) silica. However, it is unknown to what extent the processes leading to irreversible densification of silica glass in cold-compression at room temperature and in hot-compression (e.g., near glass transition temperature) are common in nature. In this work, a hot-compression technique was used to quench silica glass from high temperature (1100 °C) and high pressure (up to 8 GPa) conditions, which leads to density increase of ∼25% and Young's modulus increase of ∼71% relative to that of pristine silica glass at ambient conditions. Our experiments and molecular dynamics (MD) simulations provide solid evidences that the intermediate-range order of the hot-compressed HDA silica is distinct from that of the counterpart cold-compressed at room temperature. This explains the much higher thermal and mechanical stability of the former than the latter upon heating and compression as revealed in our in-situ Brillouin light scattering (BLS) experiments. Our studies demonstrate the limitation of the resulting density as a structural indicator of polyamorphism, and point out the importance of temperature during compression in order to fundamentally understand HDA silica.

AB - Silica glass has been shown in numerous studies to possess significant capacity for permanent densification under pressure at different temperatures to form high density amorphous (HDA) silica. However, it is unknown to what extent the processes leading to irreversible densification of silica glass in cold-compression at room temperature and in hot-compression (e.g., near glass transition temperature) are common in nature. In this work, a hot-compression technique was used to quench silica glass from high temperature (1100 °C) and high pressure (up to 8 GPa) conditions, which leads to density increase of ∼25% and Young's modulus increase of ∼71% relative to that of pristine silica glass at ambient conditions. Our experiments and molecular dynamics (MD) simulations provide solid evidences that the intermediate-range order of the hot-compressed HDA silica is distinct from that of the counterpart cold-compressed at room temperature. This explains the much higher thermal and mechanical stability of the former than the latter upon heating and compression as revealed in our in-situ Brillouin light scattering (BLS) experiments. Our studies demonstrate the limitation of the resulting density as a structural indicator of polyamorphism, and point out the importance of temperature during compression in order to fundamentally understand HDA silica.

UR - http://www.scopus.com/inward/record.url?scp=84944339072&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84944339072&partnerID=8YFLogxK

U2 - 10.1038/srep15343

DO - 10.1038/srep15343

M3 - Article

VL - 5

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 15343

ER -