| People | Locations | Statistics |
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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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Monteiro, R. C. C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2018Sintering behaviour of a ZnO waste powder obtained as by-product from brass smeltingcitations
- 2018Bismuth and lead oxides codoped boron phosphate glasses for Faraday rotatorscitations
- 2018Thermal characteristics and crystallization behavior of zinc borosilicate glasses containing Nb2O5citations
- 2017Characterization of CdS-doped glass films obtained by pulsed laser deposition
- 2017Effect of ZnF2 addition on the crystallization behaviour of a zinc borosilicate glasscitations
- 2016Formation and crystallization of zinc borosilicate glassescitations
- 2015Crystallization of lithium disilicate-based multicomponent glasses - effect of silica/lithia ratiocitations
- 2015Brass smelting dust as a source of ZnO in the production of targets used in magnetron sputtering thin film deposition
- 2015Use of different inorganic solid wastes to produce glass foams
- 2014Crystallization kinetics of a barium-zinc borosilicate glass by a non-isothermal methodcitations
- 2014Phase transformation and microstructural evolution after heat treatment of a terbium-doped lithium–aluminum phosphate glasscitations
- 2014Synthesis of Niobium Doped Zinc Borosilicate Glass-ceramics
- 2014Crystallization and microstructure of Eu3+-doped lithium aluminophosphate glasscitations
- 2014Glass transition and crystallization kinetics of a barium borosilicate glass by a non-isothermal methodcitations
- 2014A novel dental restorative glass-ceramic based on fluorcanasite
- 2013Rare-earth doped phosphate glasses
- 2013Study of the non-isothermal crystallization kinetics of SiO2-Li2O based glasses by DSC
- 2013Investigations on optical, structural and thermal properties of phosphate glasses containing terbium ionscitations
- 2013Crystallization kinetics terbium-doped aluminophosphate glass studied by DSC, XRD and SEM
- 2013Preparation method and thermal properties of samarium and europium-doped alumino-phosphate glasses.citations
- 2013Optical and structural characterization of samarium and europium-doped phosphate glassescitations
- 2013Structural studies of Ba-B-Si-Zn glasses
- 2013Effect of Phosphogypsum on the Clinkerization Temperature of Portland Cement Clinkercitations
- 2012Sintering,Crystallization and Dielectric Behavior of Barium Zinc Borosilicate Glasses - Effect of Barium Oxide substitution for Zinc Oxidecitations
- 2012Degradation of dental ZrO2-based materials after hydrothermal fatigue. Part I: XRD, XRF, and FESEM analysescitations
- 2012Structural, electrical and thermal properties of borosilicate glass-alumina compositescitations
- 2010Structure and Morphology Study of Cobalt Oxide Doped Silica Nanocomposite Films
- 2010Artificial Aging of Zr-based Dental Materials - A Pilot Study
- 2008Mechanical characteristics of clay structural ceramics containing coal fly ashcitations
- 2007Valorização das escórias da celulose do Caima por técnicas de vitrificação
- 2007Glass-ceramics produced from incinerated municipal solid waste
- 2006Optical properties of cobalt oxide films by a dipping sol-gel processcitations
- 2004The effect of aluminum concentration on the crystallization of sol-gel derived Al:ZnO thin films
- 2004Recycling of coal fly ash by ceramic processing
- 2002Synthesis, characterization, and processing of cordierite-glass particles modified by coating with an alumina precursorcitations
- 2000Pressureless sintering of alumina-glass compositescitations
Places of action
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article
Preparation method and thermal properties of samarium and europium-doped alumino-phosphate glasses.
Abstract
tThe present work investigates alumino-phosphate glasses from Li2O-BaO-Al2O3-La2O3-P2O5systemcontaining Sm3+and Eu3+ions, prepared by two different ways: a wet raw materials mixing route fol-lowed by evaporation and melt-quenching, and by remelting of shards. The linear thermal expansioncoefficient measured by dilatometry is identical for both rare-earth-doped phosphate glasses. Compar-atively to undoped phosphate glass the linear thermal expansion coefficient increases with 2 × 10-7K-1when dopants are added. The characteristic temperatures very slowly decrease but can be consideredconstant with atomic weight, atomic number and f electrons number of the doping ions in the case of Tg(vitreous transition temperature) and Tsr(high annealing temperature) but slowly increase in the case ofTir(low annealing temperature-strain point) and very slowly increase, being practically constant in thecase of TD(dilatometric softening temperature). Comparatively to undoped phosphate glass the charac-teristic temperatures of Sm and Eu-doped glasses present lower values. The higher values of electricalconductance for both doped glasses, comparatively to usual soda-lime-silicate glass, indicate a slightlyreduced stability against water. The viscosity measurements, showed a quasi-linear variation with tem-perature the mean square deviation (R2) being ranged between 0.872% and 0.996%. The viscosity of dopedglasses comparatively to the undoped one is lower at the same temperature. Thermogravimetric analy-sis did not show notable mass change for any of doped samples. DSC curves for both rare-earth-dopedphosphate glasses, as bulk and powdered samples, showed Tgvalues in the range 435-450◦C. Bulk sam-ples exhibited a very weak exothermic peak at about 685◦C, while powdered samples showed two weakexothermic peaks at about 555◦C and 685◦C due to devitrification of the glasses. Using designed meltingand annealing programs, the doped glasses were improved regarding bubbles and cords content andstrain elimination.