Details
| Original language | English |
|---|---|
| Pages (from-to) | 1859-1862 |
| Number of pages | 4 |
| Journal | Journal of non-crystalline solids |
| Volume | 356 |
| Issue number | 35-36 |
| Early online date | 24 Jul 2010 |
| Publication status | Published - 1 Aug 2010 |
Abstract
Isothermal relaxation experiments were conducted on a mildly densified alkali borosilicate glass with an initial fictive pressure of 500 MPa. Annealing under ambient pressure at various temperatures below the glass transition leads to a gradually decreasing fictive pressure, monitored by ex situ density measurements. Relaxation times are extracted from the temporal evolution of the corresponding reaction coordinate, and an activation energy of 761 ± 40 kJ/mol is found. The timescale of pressure relaxation is similar to that of shear relaxation, but the pressure-dependence of viscosity must be considered for this assessment.
Keywords
- Pressure-effects, Relaxation, Viscosity
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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In: Journal of non-crystalline solids, Vol. 356, No. 35-36, 01.08.2010, p. 1859-1862.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Kinetics of pressure relaxation in a compressed alkali borosilicate glass
AU - Wondraczek, L.
AU - Krolikowski, S.
AU - Behrens, H.
N1 - Funding Information: Financial support by the Deutsche Forschungsgemeinschaft (DFG) under grant no. WO 1220/3-1 is gratefully acknowledged.
PY - 2010/8/1
Y1 - 2010/8/1
N2 - Isothermal relaxation experiments were conducted on a mildly densified alkali borosilicate glass with an initial fictive pressure of 500 MPa. Annealing under ambient pressure at various temperatures below the glass transition leads to a gradually decreasing fictive pressure, monitored by ex situ density measurements. Relaxation times are extracted from the temporal evolution of the corresponding reaction coordinate, and an activation energy of 761 ± 40 kJ/mol is found. The timescale of pressure relaxation is similar to that of shear relaxation, but the pressure-dependence of viscosity must be considered for this assessment.
AB - Isothermal relaxation experiments were conducted on a mildly densified alkali borosilicate glass with an initial fictive pressure of 500 MPa. Annealing under ambient pressure at various temperatures below the glass transition leads to a gradually decreasing fictive pressure, monitored by ex situ density measurements. Relaxation times are extracted from the temporal evolution of the corresponding reaction coordinate, and an activation energy of 761 ± 40 kJ/mol is found. The timescale of pressure relaxation is similar to that of shear relaxation, but the pressure-dependence of viscosity must be considered for this assessment.
KW - Pressure-effects
KW - Relaxation
KW - Viscosity
UR - http://www.scopus.com/inward/record.url?scp=77957904139&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2010.06.009
DO - 10.1016/j.jnoncrysol.2010.06.009
M3 - Article
AN - SCOPUS:77957904139
VL - 356
SP - 1859
EP - 1862
JO - Journal of non-crystalline solids
JF - Journal of non-crystalline solids
SN - 0022-3093
IS - 35-36
ER -