Some Comments on the ``Avrami'' Equation
- 1 October 1965
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 36 (10) , 3014-3016
- https://doi.org/10.1063/1.1702919
Abstract
The ``Avrami'' equation applies rigorously only to a system which does not change volume on transformation and where the developing regions are spheres. The consequences of the impossibility of achieving these conditions in real systems is discussed. It is shown that excessive approximation combined with the use of weight rather than volume fractions can lead to errors in the exponent n of as much as 0.3. It is emphasized that only at very low conversions can meaningful interpretations be made of the exponent.This publication has 5 references indexed in Scilit:
- Density and degree of crystallinity in polymersJournal of Polymer Science Part B: Polymer Letters, 1963
- The crystallization of polyethylene IPolymer, 1963
- Crystallization phenomena in polymers - The course of the crystallizationPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1954
- The laws of expanding circles and spheres in relation to the lateral growth of surface films and the grain-size of metalsTransactions of the Faraday Society, 1945
- Kinetics of Phase Change. I General TheoryThe Journal of Chemical Physics, 1939