A Generalized Method for Determining the Crystal Nucleation and Growth Rates in Glasses by Differential Thermal Analysis

Abstract

A generalized experimental method that uses differential thermal analysis (DTA) has been developed for determining the nucleation rate (I), the crystal growth rate (U), and the concentration of quenched-in nuclei (N q) in glasses. The method is applicable even for glasses, whose I and U curves (as a function of temperature) overlap to a considerable degree. Measuring I by the conventional method may yield an overestimated value for I if the chosen crystal growth temperature is within the region of overlap between I and U. when applied to a Na2O · 2CaO · 3SiO2 glass, whose I and U curves are known to overlap considerably, the present DTA method yields values for I, U, and N q that are in excellent agreement with the same values determined by the conventional methods.

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0022-2461

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Springer Verlag, All rights reserved.

Publication Date

01 Feb 2002

Link to Full Text

Share

 
COinS