Details
| Original language | English |
|---|---|
| Article number | 119480 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 521 |
| Early online date | 7 Jun 2019 |
| Publication status | Published - 1 Oct 2019 |
Abstract
The effect of structural water on density, elastic constants and microhardness of water-bearing soda-lime-silica glasses of up to 21.5 mol% total water is studied. It is found that the Poisson ratio and the water content are positively correlated, while density and the elastic moduli decrease with increasing water content. Vickers hardness decreases by approximately 27% from the dry to the most hydrous glass. For water fractions <3 mol%, the dependencies are non-linear reflecting the non-linear change in the concentrations of OH and H2O molecules dissolved, whereas for water fractions >3 mol% linear dependencies are found. To distinguish the effect of structural water and environmental water, indentations were performed in toluene, nitrogen gas and air. Time-dependent softening was evident for testing dry glasses in humid atmospheres as well as for tests of hydrous glasses in dry atmospheres. This indicates that the response times of dissolved water species are effectively equal in both scenarios.
Keywords
- Elastic constants, Microhardness, Soda-lime-silica glass, Water content
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. 521, 119480, 01.10.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Density, elastic constants and indentation hardness of hydrous soda-lime-silica glasses
AU - Kiefer, Philipe
AU - Balzer, Robert
AU - Deubener, Joachim
AU - Behrens, Harald
AU - Waurischk, T.
AU - Reinsch, Stefan
AU - Müller, Ralf
N1 - Funding Information: The financial support of the Deutsche Forschungsgemeinschaft (DFG) via SPP1594 is gratefully acknowledged.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The effect of structural water on density, elastic constants and microhardness of water-bearing soda-lime-silica glasses of up to 21.5 mol% total water is studied. It is found that the Poisson ratio and the water content are positively correlated, while density and the elastic moduli decrease with increasing water content. Vickers hardness decreases by approximately 27% from the dry to the most hydrous glass. For water fractions <3 mol%, the dependencies are non-linear reflecting the non-linear change in the concentrations of OH and H2O molecules dissolved, whereas for water fractions >3 mol% linear dependencies are found. To distinguish the effect of structural water and environmental water, indentations were performed in toluene, nitrogen gas and air. Time-dependent softening was evident for testing dry glasses in humid atmospheres as well as for tests of hydrous glasses in dry atmospheres. This indicates that the response times of dissolved water species are effectively equal in both scenarios.
AB - The effect of structural water on density, elastic constants and microhardness of water-bearing soda-lime-silica glasses of up to 21.5 mol% total water is studied. It is found that the Poisson ratio and the water content are positively correlated, while density and the elastic moduli decrease with increasing water content. Vickers hardness decreases by approximately 27% from the dry to the most hydrous glass. For water fractions <3 mol%, the dependencies are non-linear reflecting the non-linear change in the concentrations of OH and H2O molecules dissolved, whereas for water fractions >3 mol% linear dependencies are found. To distinguish the effect of structural water and environmental water, indentations were performed in toluene, nitrogen gas and air. Time-dependent softening was evident for testing dry glasses in humid atmospheres as well as for tests of hydrous glasses in dry atmospheres. This indicates that the response times of dissolved water species are effectively equal in both scenarios.
KW - Elastic constants
KW - Microhardness
KW - Soda-lime-silica glass
KW - Water content
UR - http://www.scopus.com/inward/record.url?scp=85066828870&partnerID=8YFLogxK
U2 - 10.1016/j.jnoncrysol.2019.119480
DO - 10.1016/j.jnoncrysol.2019.119480
M3 - Article
AN - SCOPUS:85066828870
VL - 521
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
M1 - 119480
ER -