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|Title:||Adiabatic nucleation and crystallization of gels|
Zanotto, Edgar D.
Aegerter, Michel A.
|Year of Publication:||1990|
|OPUS Source:||Journal of non-crystalline solids. - 121. 1990, 1/3, S. 279-281|
|SWD key words:||Keimbildung|
|DDC notations:||620 Engineering and machine engineering|
|Publikation type:||Journal Article|
|Abstract:||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 to this record:||urn:nbn:de:bsz:291-scidok-21739|
|Date of registration:||25-May-2009|
|Faculty:||SE - Sonstige Einrichtungen|
|Department:||SE - INM Leibniz-Institut für Neue Materialien|
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