Abstract
Calcium aluminate glasses are transparent in the infrared region, exhibit ultralow optical losses, and possess excellent mechanical properties. However, these systems exhibit poor glass-forming ability, and it is therefore important to understand their composition-structure-property relations to enable the design of new compositions with optimized properties and glass-forming ability. In this paper, we study the structure-property relationships in CaO-Al2O3 based glasses with different additives (SiO2, MgO, SrO, BaO, and ZnO). Our results reveal a gradual change in all the measured properties (molar volume, hardness, crack resistance, glass transition temperature, and liquid fragility) upon the addition of SiO2 to the eutectic 64CaO-36Al2O3 composition and the partial substitution of CaO for different divalent cation oxides. The relation between the measured liquid fragility index and the glass-forming ability is also investigated. We discuss these phenomena based on structural information obtained by Raman spectroscopy and topological considerations.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 160-165 |
| Number of pages | 6 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 427 |
| DOIs | |
| State | Published - Aug 11 2015 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry
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Structure-property relations in calcium aluminate glasses containing different divalent cations and SiO2. / Sebdani, Maryam M.; Mauro, John; Jensen, Lars R.; Smedskjaer, Morten M.
In: Journal of Non-Crystalline Solids, Vol. 427, 11.08.2015, p. 160-165.Research output: Contribution to journal › Article
TY - JOUR
T1 - Structure-property relations in calcium aluminate glasses containing different divalent cations and SiO2
AU - Sebdani, Maryam M.
AU - Mauro, John
AU - Jensen, Lars R.
AU - Smedskjaer, Morten M.
PY - 2015/8/11
Y1 - 2015/8/11
N2 - Calcium aluminate glasses are transparent in the infrared region, exhibit ultralow optical losses, and possess excellent mechanical properties. However, these systems exhibit poor glass-forming ability, and it is therefore important to understand their composition-structure-property relations to enable the design of new compositions with optimized properties and glass-forming ability. In this paper, we study the structure-property relationships in CaO-Al2O3 based glasses with different additives (SiO2, MgO, SrO, BaO, and ZnO). Our results reveal a gradual change in all the measured properties (molar volume, hardness, crack resistance, glass transition temperature, and liquid fragility) upon the addition of SiO2 to the eutectic 64CaO-36Al2O3 composition and the partial substitution of CaO for different divalent cation oxides. The relation between the measured liquid fragility index and the glass-forming ability is also investigated. We discuss these phenomena based on structural information obtained by Raman spectroscopy and topological considerations.
AB - Calcium aluminate glasses are transparent in the infrared region, exhibit ultralow optical losses, and possess excellent mechanical properties. However, these systems exhibit poor glass-forming ability, and it is therefore important to understand their composition-structure-property relations to enable the design of new compositions with optimized properties and glass-forming ability. In this paper, we study the structure-property relationships in CaO-Al2O3 based glasses with different additives (SiO2, MgO, SrO, BaO, and ZnO). Our results reveal a gradual change in all the measured properties (molar volume, hardness, crack resistance, glass transition temperature, and liquid fragility) upon the addition of SiO2 to the eutectic 64CaO-36Al2O3 composition and the partial substitution of CaO for different divalent cation oxides. The relation between the measured liquid fragility index and the glass-forming ability is also investigated. We discuss these phenomena based on structural information obtained by Raman spectroscopy and topological considerations.
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U2 - 10.1016/j.jnoncrysol.2015.07.047
DO - 10.1016/j.jnoncrysol.2015.07.047
M3 - Article
AN - SCOPUS:84938889244
VL - 427
SP - 160
EP - 165
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
ER -