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Abstract
Hot isostatic compression can be used as a post treatment method to tune the properties of glass materials as
well as to obtain improved understanding of the pressure-induced structural changes and densification
mechanisms, e.g., during sharp contact loading. Here, we review the pressure-induced changes in density,
structure, and indentation behavior of a range of oxide glasses, including silicates, borates, and phosphates.
The effect of compression on the structure is analyzed through both Raman and NMR spectroscopy, while
the mechanical properties are investigated using Vickers micro-indentation. The magnitude of the changes in
all macroscopic properties (e.g., density, hardness, and crack resistance) is found to correlate well with the
magnitude and type of structural change induced by hot compression. We show that the structural changes
depend largely on the type of network former, the coordination number distribution of network formers, the
number of non-bridging oxygens, and the packing efficiency in the glasses.
well as to obtain improved understanding of the pressure-induced structural changes and densification
mechanisms, e.g., during sharp contact loading. Here, we review the pressure-induced changes in density,
structure, and indentation behavior of a range of oxide glasses, including silicates, borates, and phosphates.
The effect of compression on the structure is analyzed through both Raman and NMR spectroscopy, while
the mechanical properties are investigated using Vickers micro-indentation. The magnitude of the changes in
all macroscopic properties (e.g., density, hardness, and crack resistance) is found to correlate well with the
magnitude and type of structural change induced by hot compression. We show that the structural changes
depend largely on the type of network former, the coordination number distribution of network formers, the
number of non-bridging oxygens, and the packing efficiency in the glasses.
| Original language | English |
|---|---|
| Publication date | 4 Jul 2017 |
| Publication status | Published - 4 Jul 2017 |
| Event | 7th International Workshop on Flow and Fracture of Advanced Glasses - Utzon Center, Aalborg, Denmark Duration: 2 Jul 2017 → 5 Jul 2017 http://www.ffag.aau.dk |
Conference
| Conference | 7th International Workshop on Flow and Fracture of Advanced Glasses |
|---|---|
| Location | Utzon Center |
| Country/Territory | Denmark |
| City | Aalborg |
| Period | 02/07/2017 → 05/07/2017 |
| Internet address |
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Dive into the research topics of 'Indentation Behavior of Permanently Densified Oxide Glasses'. Together they form a unique fingerprint.Projects
- 1 Finished
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Topological Basis of Compressed Inorganic Glass Properties
Smedskjær, M. M., Svenson, M. N. & Kapoor, S.
Independent Research Fund Denmark | Sapere Aude
01/10/2013 → 15/04/2017
Project: Research