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| Titel: |
Induced crystallization of glass-forming systems: A case of transient heterogeneous nucleation, part 1. |
| Auteur: |
Gutzow, I. |
| Verschenen in: |
Contemporary physics |
| Paginering: | Jaargang 21 (1980) nr. 2 pagina's 121-137 |
| Jaar: |
1980-03-01 |
| Inhoud: |
Glass-ceramics which have played an ever increasing role in science and technology in the last two decades are the most widely used representative of a new type of partly crystalline or semi-amorphous materials. They can be prepared by induced crystallization of glass-forming melts. This article, which is in two parts, surveys a number of theoretical and experimental investigations providing closer physical insight into the process of formation of glass-ceramic materials. Part 1 outlines the general principles of nucleation in viscous, glass-forming melts. It is shown that the kinetics of nucleation in glass-forming systems should be quantitatively described only in terms of the transient, more general Zeldovich-Frenkel formulation of the classical theory of phase formation. Part 2 (to appear in the next issue) summarizes experimental evidence on the nonsteady-state kinetics of nucleation and on the activity of nucleating catalyst in various glass-forming melts. A theoretical treatment of the activity of substrates is attempted within the framework of existing concepts of inter-molecular bonding. The influence of liquid phase separation in the formation of glass-ceramic materials is also discussed in this part. Possible applications of the induced crystallization in glass-forming systems are considered in both parts of the paper. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 8 gevonden artikelen
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