Structural characterisation of Er–Si–Al–O–N glasses by Raman spectroscopy

Dolekcekic, Emrah; Pomeroy, Michael J.; Hampshire, Stuart

doi:10.1016/j.jeurceramsoc.2006.04.058

Cited by 39 publications

(24 citation statements)

References 37 publications

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“…These observations and explanations are consistent with those of Dolekcekic et al [36] who showed, using Raman Spectroscopy, that as nitrogen content increases then the proportion of Q 3 species decreases and there is a corresponding increase in the proportion of Q 4 species (either ≡Si-O-Si≡ or ≡Si-N --Si≡).…”

Section: Discussionsupporting

confidence: 92%

Effects of addition of nitrogen on bioglass properties and structure

Bachar

Mercier

Tricoteaux

et al. 2012

Journal of Non-Crystalline Solids

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Section: Discussionsupporting

confidence: 92%

Effects of addition of nitrogen on bioglass properties and structure

Bachar

Mercier

Tricoteaux

et al. 2012

Journal of Non-Crystalline Solids

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“…3). 38 These results imply that nitrogen is incorporated into what was a nonbridging site (see Fig. 2) rather than formation of an SiO 2 N 2 tetrahedron, which would form links with five other tetrahedra to strengthen the glass network.…”

Section: Structure–property Relationships In Glassesmentioning

confidence: 89%

An Overview of the Structure and Properties of Silicon‐Based Oxynitride Glasses

Becher

Hampshire

Pomeroy

et al. 2011

Int J of Appl Glass Sci

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102

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The silicon oxynitride glasses take advantage of nitrogen bonding to attain high elastic modulus, increased softening temperatures and viscosities, greater slow crack growth resistance, and modest gains in fracture resistance. Of the oxynitride glasses, the Si–Y–Al‐based oxynitride glasses have been most extensively studied and a degree of success has been achieved in understanding how changes in glass composition affect structural parameters and their relationship with properties. More recent studies have focused on the Si–RE–Me oxynitride glasses, where Me is primarily Al or Mg and rare earth (RE) includes most of the lanthanide series elements. These glasses possess a range of elastic, thermal, mechanical, and optical properties, which can be correlated with the strength of the RE bond in terms of the cationic field strength. However, such correlations require knowledge of not only the RE valence state but also its coordination with the anions. Herein, the current state‐of‐the‐art understanding of the properties and structural parameters of oxynitride glasses and their interrelationships are reviewed.

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“…42 In the RE-Si-Mg-O-N glasses, this depends on the rare earth cation; Lu was found to be more effective in formation of SiO 3 N units than La. 29 Replacing La by Lu results in approximately 1 order of magnitude increase in viscosity.…”

Section: Effects Of Glass Composition On Structure and Properties Of mentioning

confidence: 99%

Oxynitride glasses

Hampshire

2008

Journal of the European Ceramic Society

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Oxynitride glasses are silicates and alumino-silicates in which nitrogen atoms substitute for oxygen in the glass network. They are present as intergranular films and at triple points within the microstructures of silicon nitride-based ceramics as a result of the cooling of liquid phases formed by reaction of sintering additives with the nitride and surface silica. Oxynitride glass chemistry and volume fractions determine the type of microstructure developed and hence the properties of silicon nitride and sialons. In particular, they affect strength and fracture toughness and the control of high temperature creep behaviour. The desire to understand the nature of these grain boundary phases has resulted in a number of investigations on oxynitride glass formation, structure, properties and crystallisation which have shown that they have higher glass transition temperatures, elastic moduli, viscosities and values of hardness and lower thermal expansion coefficients than the corresponding oxide glasses. This paper reviews the development of oxynitride glasses and outlines the effect of glass composition, especially nitrogen content and also cation ratios, on properties and relates this to structural features within the glass. Nucleation and crystallisation studies are also outlined.

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Structural characterisation of Er–Si–Al–O–N glasses by Raman spectroscopy

Cited by 39 publications

References 37 publications

Effects of addition of nitrogen on bioglass properties and structure

Effects of addition of nitrogen on bioglass properties and structure

An Overview of the Structure and Properties of Silicon‐Based Oxynitride Glasses

Oxynitride glasses

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