Login for students

Login for employees

Publication detail

Non-isothermal crystallization of (GeS2)(0.1)(Sb2S3)(0.9) chalcogenide glass: Influence of reaction atmosphere
Authors: Svoboda Roman
Year: 2016
Type of publication: článek v odborném periodiku
Name of source: Journal of Non-Crystalline Solids
Publisher name: Elsevier Science BV
Place: Amsterdam
Page from-to: 102-108
Titles:
Language Name Abstract Keywords
cze Neizotermní krystalizace (GeS2)(0.1)(Sb2S3)(0.9) chalkogenidového skla: vliv reakční atmosféry DSC, XRD a IČ mikroskopie byly použity pro studium vlivu reakční atmosféry na krystalizační chování prášků sklovitého (GeS2)(0.1)(Sb2S3)(0.9). Bylo zjištěno, že přítomnost kyslíku akceleruje krystalizační proces v závislosti na velikosti částic práškového skla. krystalizace; reakční atmosféra; DSC; XRD; IČ mikroskopie; (GeS2)(0.1)(Sb2S3)(0.9) sklo
eng Non-isothermal crystallization of (GeS2)(0.1)(Sb2S3)(0.9) chalcogenide glass: Influence of reaction atmosphere Differential scanning calorimetry, X-ray diffraction analysis and infrared microscopy were used to investigate the influence of reaction atmosphere (air versus pure nitrogen) on crystallization behavior of (GeS2)(0.1)(Sb2S3)(0.9) powdered and bulk glass. The presence of oxygen was found to accelerate (in comparison to pure N-2) the crystallization process in dependence on particle size of the powdered glass. Large amounts of mechanically induced defects (and not the increased surface area) were found to be the key catalyzing factor. Formal kinetic description of the crystallization mechanism (presented in terms of the nucleation-growth model) remained unchanged by the presence of oxygen. In addition, also the crystallographic nature of the crystalline products was similar for crystallization in air and in pure N-2. Direct observations by infrared microscopy confirmed that the (GeS2)(0.1)(Sb2S3)(0.9) glass crystallizes from surface. These observations also evidenced similar morphology of the crystallites growing in and without presence of oxygen, as well as the more preferential defects-based growth in case of the oxygenated samples. In addition, presence of oxygen was found to partially inhibit the powder sintering above the glass transition temperature. Crystallization; Reaction atmosphere; DSC; XRD; Infrared microscopy; (GeS2)(0.1)(Sb2S3)(0.9) glass

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives