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Titel: Adiabatic nucleation and crystallization of gels
Verfasser: Meyer, Erich
Zanotto, Edgar D.
Aegerter, Michel A.
Sprache: Englisch
Erscheinungsjahr: 1990
Quelle: Journal of non-crystalline solids. - 121. 1990, 1/3, S. 279-281
SWD-Schlagwörter: Keimbildung
Polymere
Kristallisation
Gel
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : Journalartikel
Kurzfassung: Adiabatic Nucleation Theory (ANT) has been successfully applied to pure liquid metals, oxide glasses, metallic glasses and polymers. This paper shows that ANT gives an interesting correlation between the crystallization data of gels of both reluctant and good (dense) glass forming systems. For reluctant glass formers, one finds that Tch < T14-, whereas for good (dense) glass formers, Tch > T14-. T-14 is the temperature predicted by ANT at which nucleation starts in cooling experiments or ceases during heating and Tch is the experimental temperature of crystallization on heating. For systems with Tch considerably lower than t-14, as observed for reluctant glass formers, it is doubtful that one can obtain dense glasses by heat treatment of gels. This conclusion is in diagreement with the often advanced idea that the gel route can lead to dense glasses of unusual, reluctant glass forming compositions. © 1990.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-21739
hdl:20.500.11880/24085
http://dx.doi.org/10.22028/D291-24029
SciDok-Publikation: 25-Mai-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

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