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Glass-ceramics for nuclear-waste immobilization

Published online by Cambridge University Press:  06 March 2017

John S. McCloy
Affiliation:
School of Mechanical and Materials Engineering, Washington State University, USA; john.mccloy@wsu.edu
Ashutosh Goel
Affiliation:
Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, USA; ag1179@soe.rutgers.edu
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Abstract

Crystallization in glasses is usually considered to be a problem in the glass industry. However, controlled crystallization of glasses is an important prerequisite in the development of glass-ceramics with tailored useful properties. Similar boundary conditions apply when considering glass-ceramics for the immobilization of nuclear waste via vitrification. While uncontrolled crystallization in nuclear-waste glasses is problematic, chemically durable glass-ceramics with significantly high waste loadings can be produced with controlled crystallization of glasses. This article presents an overview of various aspects of nuclear-waste glasses where crystallization is either considered to be advantageous or problematic. The classification of glass-ceramic waste forms and strategies to design glass-ceramics for a given waste stream is discussed. Some open and relevant problems faced by researchers developing nuclear-waste glass-ceramics are also offered.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2017 

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