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Titel: Influence of water on the physical properties of fluoride glass
Verfasser: Gonçalves, M. C.
Almeida, R. M.
Delben, A. A. S. T.
Aegerter, Michel A.
Sprache: Englisch
Erscheinungsjahr: 1992
Quelle: Journal of non-crystalline solids. - 140. 1992, S. 52-56
SWD-Schlagwörter: Physikalische Eigenschaft
Fluoride
Hydroxylgruppe
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : Journalartikel
Kurzfassung: Several physical properties of ZBLAN glass, including their characteristic transformation temperatures, density, refractive index and ultrasonic velocity, were studied as a function of their residual water content. A series of samples with OH concentrations up to ∼ 0.0043 mol dm-3 was prepared. The OH content was determined for the partially hydrated glasses from FTIR measurements, using a known molar extinction coefficient value for the 2.9 μm band, assigned to fundamental OH stretching vibrations in Zr{single bond}OH species. Molecular H2O was not found at the present levels of water concentration. The preliminary results obtained indicate that an increase in the OH concentration causes a decrease of the density and refractive index values, similar to what has been observed in v-SiO2, as opposed to the case of silicate glasses. This behavior was not expected, since ZBLAN glass has a complex structure closer to that of modified silicates than to v-SiO2. The effect of the OH concentration on the other physical properties was generally found to coincide with known trends for silicate glasses. © 1992 Elsevier Science Publishers B.V. All rights reserved.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-21808
hdl:20.500.11880/24107
http://dx.doi.org/10.22028/D291-24051
SciDok-Publikation: 3-Jul-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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