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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hampshire, Stuart
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2023Mechanical properties of oxynitride glassescitations
- 2018Mechanical properties, structure, bioactivity and cytotoxicity of bioactive Na-Ca-Si-P-O-(N) glassescitations
- 2017Types of ceramics: Material classcitations
- 2017Types of ceramics : material class
- 2015Effect of Nitrogen on Properties of Na 2 O-CaO-SrO-ZnO-SiO 2 Glassescitations
- 2015Waste-to-resource preparation of a porous ceramic membrane support featuring elongated mullite whiskers with enhanced porosity and permeancecitations
- 2015Silicon Nitride Ceramicscitations
- 2012Glass reactive sintering as an alternative route for the synthesis of NZP glass-ceramicscitations
- 2011Silicon Nitride Grain Boundary Glasses: Chemistry, Structure and Propertiescitations
- 2011Comparison of Microwave and Conventionally Sintered Yttria-Doped Zirconia Ceramicscitations
- 2008Controlled Crystallisation of a Y-Si-Al-O-N Glass Typical of Grain Boundary Glasses Formed in Silicon Nitride-Based Ceramicscitations
- 2008Developments in SiAlON Glasses and their Derivatives: Effects of Chemistry on Properties
- 2008SiAlON B-Phase Glass-Ceramic Microstructures
- 2008Silicon Nitride Ceramicscitations
- 2007Ca-SiAlON Glasses: Effects of Fluorine on Glass Formation and Propertiescitations
- 2007An Introduction to the Glass Formation and Properties of Ca-Si-Al-O-N-F Glassescitations
- 2007Effect of Cooling Rate on Glass Formation for Some Oxynitride Glassescitations
- 2007The Intergranular Oxynitride Microstructure in Silicon Nitride Based Ceramicscitations
- 2007Oxynitride Glasses: Preparation, Properties and Implications for Mechanical Behaviour of Silicon Nitridecitations
- 2006Oxynitride Glasses and Their Properties - Implications for High Temperature Performance of Silicon Nitride-Based Ceramicscitations
- 2006The Crystallisation of B-Phase Glass-Ceramicscitations
- 2005Properties and Crystallization of Rare-Earth Si-Al-O-N Glasses Containing Mixed Trivalent Modifiers
- 2005Viscosities of Oxynitride Glass and the Effects on High Temperature Behaviour of Silicon Nitride-Based Ceramicscitations
- 2005Comparison of Silicon Nitrides with Carbon Additions Prepared by Two Different Sintering Methodscitations
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article
Controlled Crystallisation of a Y-Si-Al-O-N Glass Typical of Grain Boundary Glasses Formed in Silicon Nitride-Based Ceramics
Abstract
<jats:p>This paper provides an overview of the crystallisation of an oxynitride glass likely to remain in a silicon nitride ceramic following firing. The crystallisation process was studied using both differential thermal analysis (DTA) and separate isothermal heat treatments in a tube furnace under nitrogen. The activation energy for the crystallisation process was determined by DTA. The nucleation temperature, Tg + 40°C, which corresponded to the maximum volume fraction of crystalline phases, agreed closely with the optimum nucleation temperature of Tg + 35°C, found from DTA.The optimum crystal growth temperature was observed to be 1210°C and yielded the - and -polymorphs of yttrium disilicate.Heat treatments at other temperatures indicated the development of phase assemblages which contained different polymorphs of yttrium disilicate as well as silicon oxynitride.Not all of the polymorphic transformations of yttrium disilicate were observed by DTA unless some crystallisation exotherms were deconvoluted, indicating that DTA analysis of the crystallisation of complex systems requires careful interpretation.It is, however, possible to simplify the system by substituting some yttrium by lanthanum.This stabilises the -polymorph of yttrium disilicate. The activation energy for crystallisation was observed to be similar to that for viscous flow of Y-Si-Al-O-N glasses. </jats:p>