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Showing 1 to 14 of 14 for “"Glass -- Composition"”.
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Fabrication and Characterization of a Porous Clad Optical Fiber Gas Sensor
… region is made from a spinodally phase separable glass where the secondary phase is removed through dilute acid leaching. A non-phase separable glass composition is used for the core region. The properties of the phase separable glass are dependent on the processing conditions and the thermal …
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Broad Band Excitation of Rare-Earth Dopants in Chalcogenide Glasses
… effect in rare earth-doped chalcogenide glasses. Photoluminescence excitation (PLE) bands with a width of $\sim$450 nm have been observed which efficiently excite a number of rare earth emission lines. This effect is attributed to the absorption of excitation light by the host glass with …
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Broad excitation of rare earth dopants in chalcogenide glasses
… effect in rare earth-doped chalcogenide glasses. Photoluminescence excitation (PLE) bands with a width of ~450 nm have been observed which efficiently excite a number of rare earth emission lines. This effect is attributed to the absorption of excitation light by the host glass with the …
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Effect of zinc substitution on the structure of calcium Fluoro-Alumino-Silicate glasses and glass-ceramics
Ionomer glasses are certain glass compositions that have been used as the glass component in glass ionomer cements. The term “ionomer” was traditionally related with the use of polyacrylic acid as the polymeric component of glass ionomer cements that incorrectly was characterized as an ionomer …
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Antimicrobial Properties of Gallium-Infused and Zinc-Infused Bioglasses: A Potential Cure for Coronavirus
… supported the use of gallium-infused bioglasses as a way to inhibit bacterial and cancerous tumor growth, but this glass was restricted in how well it could prevent viral replication. These findings, along with other literature supporting the key immunological and antiviral properties of …
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Shape Memory Alloy / Glass Composite Seal for Solid Oxide Fuel Cells
… expansion gradient in a SrO-La₂O₃-A₂O₃-B₂O₃-SiO₂ glass matrix with a TiNiHf shape memory alloy mesh for active stress relief and crack healing is being developed. Coefficient of thermal expansion (CTE) measurements of the seal and fuel cell components shows the possibility for a thermal expansion …
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Dynamics of ash eruptions at Vesuvius
… study we present morphological, textural and compositional data on the products of two ash eruptions representative of the whole variability of this activity at Vesuvius (Italy), occurred in the periods between the “Avellino” and “Pompeii” Pumice eruptions (AP3, 2,710±60 years B.P.) and after …
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Thermally stimulated polarization and depolarization current (TSPC/TSDC) in glass
<p>"The feasibility of studying ionic motion in glass using thermally stimulated polarization (TSPC)/depolarization current (TSDC) techniques was investigated with 4Na₂O·96SiO₂ and 30PbO·70SiO₂ (mol%) glasses. The TSDC peaks in these glasses were dependent on glass composition and attributed to …
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The production of colored glasses
Made available in DSpace on 2016-11-09T23:48:08Z (GMT). No. of bitstreams: 2 5994803_opt.pdf: 8271389 bytes, checksum: 166bb3eec61a39ce3af6fb60b5335e5d (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1916
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Graphite immobilisation in glass composite materials
… disposal route. This thesis describes the use of glass materials for the immobilisation of irradiated graphite prepared by microwave, conventional and sparks plasma sintering methods. Several potential glass compositions namely iron phosphate, aluminoborosilicate, calcium aluminosilicate, alkali …
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Glass-ceramics for solid oxide fuel cell seals
… a review of the literature on the development of glass and glass-ceramic sealants for solid oxide fuel cells (SOFC), including the critical issues for sealant design. Section two describes a quantitative approach to characterize the isothermal crystallization of glass using differential thermal …
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Experimental studies on the adsorption of SO2 on volcanic ashes
… of SO2 on synthetic and on natural volcanic glasses was studied. The synthetic glasses were of rhyolitic, dacitic and andesitic composition and were synthesized in a high-temperature furnace at 1600°C. The natural volcanic glasses were Lipari obsidian and Puu Waawaa obsidian. Before the …
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Fabrication, Kinetics and Crystallography of Lithium Disilicate Glass-Ceramics
… aspects of investigations on lithium disilicate glass-ceramics, namely, fabrication, kinetics, and crystallography. One of the objectives is to fabricate a high-strength glass-ceramic in complex lithium disilicate glass systems for dental restorative applications by means of compositional design …
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Production and characterisation of bioresorbable polymers and polymer-glass composites for application in cardiac stents
… materials based on polymer blends and polymer-glass composites, for future application in an effective and safe bioresorbable cardiac stent. PLLA was combined with polyethylene-glycol functionalised poly(L-lactide-co-caprolactone) (PLCL-PEG) to form a semi-miscible set of polymer blends with …