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  • Springer  (5)
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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of thermal analysis and calorimetry 32 (1987), S. 107-114 
    ISSN: 1572-8943
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die AbhÄngigkeit der Glasumwandlungstemperatur (T g) und der Temperatur bei maximaler Kristallisationsgeschwindigkeit (T p) von der Zusammensetzung von Sb enthaltenden As-Se-GlÄsern wurde mittels nicht-isothermer DSC bestimmt. VerÄnderungen dieser charakteristischen Temperaturen haben sich als nützlich zur Interpretation der strukturellen VerÄnderungen in As-Sb-Se-GlÄsern erwiesen. Die Rolle des Sb in diesen GlÄsern und dessen Wirkung auf die Kristallisationskenndaten wird untersucht.
    Kurzfassung: РЕжУМЕ МЕтОДОМ НЕИжОтЕРМИЧ ЕскОИ Дск ИжМЕРЕНы тЕМпЕРАтУРы РАсстЕк лОВыВАНИь (т g) И тЕМпЕРАтУРы МАксИМА льНОИ скОРОстИ кРИст АллИжАцИИ (т Р) стЕкОл As-Se-Sb В жАВИсИМ ОстИ От Их сОстАВА. УстАНОВлЕНО, ЧтО ИжМЕНЕНИь ЁтИх хАРАктЕРИстИЧЕскИх тЕМпЕРАтУР ьВльУтсь пОлЕжНыМИ пРИ ИНтЕРпРЕтАцИИ ст РУктУРНых ИжМЕНЕНИИ стЕкОл. пРОАНАлИжИРОВАНА РО ль сУРьМы В стЕклАх И ЕЕ ВлИьНИЕ НА хАРАктЕ РИстИкИ кРИстАллИжА цИИ.
    Notizen: Abstract The compositional dependence of the glass transition temperature (T g), and the temperature of the maximum rate of crystallization (T p) of As-Se glasses containing Sb has been measured using non-isothermal DSC. The variation of these characteristic temperatures is found useful in interpreting the structural changes in As-Sb-Se glasses. The role of Sb in these glasses and its effect on the crystallization characteristics is analyzed.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of materials science 33 (1998), S. 5901-5904 
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Apatite crystallization in the apatite–wollastonite glass exhibits a three-dimensional bulk mechanism with an Avrami parameter (n)≈3, while that of the second phase (wollastonite) shows a two-dimensional surface mechanism (planar growth) with n≈2. A strong effect of glass particle size on the wollastonite crystallization temperature is observed. The peak temperature is lower when the particle size is smaller.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Journal of materials science 30 (1995), S. 6151-6155 
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract The effect of fluorine (F) content in the parent glass on nucleation and crystallization of glass-ceramics with canasite as the principle crystalline phase have been studied using differential thermal analysis, X-ray diffraction, and transmission electron and scanning electron microscopies. CaF2 precipitation occurred during the nucleation phase at all concentrations studied. However, canasite formation during subsequent crystallization was strongly dependent on F content. Canasite failed to form at both high and low concentrations of F, while with intermediate F concentrations canasite and CaF2 were the only phases identified. Agrellite (NaCa2Si4O10F) formed when the F content was high.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Oleic acid thin film was coated on soda-lime-silicate (SLS) glass from different coating media such as benzene, ethyl alcohol, water and air with different coating times and concentrations. When the coating medium is benzene, relatively more COO-metal ion complexes formed on the substrate surface, resulting in a coating layer with a more rigid and ordered structure. This was caused by a high solubility of oleic acid and a lower metal dissolution rate of the glass substrate in the medium. The coating time was a less important factor on the ordering of molecular chains than the coating medium was. The effect of concentration was more significant when oleic acid is coated from ethyl alcohol or water rather than from benzene. When oleic acid is coated from benzene, the most highly-ordered molecular structure of coating layer was obtained even at lower concentration. This investigation reveals that the dissolution behavior of the substrate, the solubility of the coating material and the dissociation behavior of metal-carboxylate (COO-M) complexes significantly influence the interaction mechanism between the coating material and the substrate. These factors can be controlled by the selection of an appropriate coating medium; thus, we can design organic thin films with optimized properties.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 1995-12-01
    Print ISSN: 0022-2461
    Digitale ISSN: 1573-4803
    Thema: Maschinenbau , Physik
    Publiziert von Springer
    Standort Signatur Erwartet Verfügbarkeit
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