0000000000291614

AUTHOR

Natalija Borodajenko

showing 2 related works from this author

Studies of TiO<sub>2</sub> Ceramics Structure after Thermal Treatment at Different Conditions

2014

The present work describes results of investigation of structural characteristics of TiO2 ceramics, depending on temperature and thermal treatment conditions by using a variety of characterization techniques. TiO2 ceramics was prepared by extrusion method and developed as a material for electrodes for innovative water treatment technologies. It was shown that non-stoichiometric phase TiO1.95 was observed after thermal treatment of TiO2 ceramics under high vacuum conditions.

Materials scienceMechanical EngineeringUltra-high vacuumMetallurgyThermal treatmentCharacterization (materials science)Mechanics of Materialsvisual_artPhase (matter)Electrodevisual_art.visual_art_mediumGeneral Materials ScienceWater treatmentExtrusionCeramicKey Engineering Materials
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Phase Transition in Niobophosphate Glass-Ceramic

2011

Phase transition during crystallization of glass to glass-ceramic in system P2O5-CaO-Nb2O5-Na2O was studied. Several heating rates were compared – 1, 2, 5, 11 and 20°Cmin-1. DTA, XRD, FTIR and Raman analyses were performed. Niobophosphate glass-ceramic is found to form utterly different crystalline phases depending on maximal heating temperature, heating rate and time of maximal temperature maintenance. Crystallization temperatures of the same phases are strongly dependent on heating rate, while crystallinity of obtained phases is not. At lower temperatures poorly crystalline phosphates (Ca3(PO4)2, Ca10Na(PO4)7, Ca2P2O7) and niobates (NaNbO3 and Nb2O5) are identified. At higher temperatures…

Phase transitionGlass-ceramicMaterials scienceGeneral Engineeringlaw.inventionCrystallinityCrystallographysymbols.namesakeChemical engineeringlawHeating temperaturesymbolsCrystallizationFourier transform infrared spectroscopyRaman spectroscopyAdvanced Materials Research
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