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Crystallization Behavior of a Ferri-Silicate α-Waste Glass

Published online by Cambridge University Press:  28 February 2011

A. D. Stalios  and
R. De Batist
A. D. Stalios
Affiliation:
Materials Physics Department, S.C.K./C.E.N., B-2400 Mol, Belgium
R. De Batist
Affiliation:
Also Rijksuniversitair Centrum Antwerpen, B-2020 Antwerpen, Belgium
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Abstract

The crystallization behavior of a ferri-silicate α-waste glass was studied by means of several experimental techniques. The main crystal phase showed a plate-like morphology and was identified as a monoclinic pyroxene. The Johnson-Mehl-Avrami equation was used for the determination of the kinetic parameters of the process. Following both isothermal and non-isothermal techniques, the Avrami exponent, n, was found to be nearly one. The activation energy for crystal growth is Eg = 356 kJ mole−1. The crystallization process is governed by instantaneous nucleation and diffusion controlled two dimensional growth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 50: Symposium STOCKHOLM – Scientific Basis for Nuclear Waste Management IX , 1985 , 255
Copyright
Copyright © Materials Research Society 1985

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