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Conference Papers Year : 2017

## Glass, crystallization and phase separation an insight into glass enriched in MoO$_3$

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#### Abstract

Highly focused research programs are currently underway in CEA Marcoule to develop and optimize vitrification processes for the production of waste containment glasses. The main issues facing us today are to accommodate new types of waste and higher waste loading, while enhancing the glass quality and increasing the production capacity and robustness of the plants. This requires extensive knowledge of the physical and chemical properties of glassy materials. Academic research on glass melting is conducted to understand the phenomenology behind the formation of the glass and its evolution after cooling from atomic to macroscopic scale. Understanding the physical and chemical properties of glass in the liquid and solid state is a major challenge to allow increased waste loading and the development of new glass formulations. In this paper we illustrate the contribution of this research considering the phases separation and crystallisation process in glass enriched in MoO$_3$. We show in particular how the thermodynamic and stuctural aspects can elucidate the mechanism of incorporating molybdenum oxide in alkali borosilicate glass.

### Dates and versions

cea-02400187 , version 1 (09-12-2019)

### Identifiers

• HAL Id : cea-02400187 , version 1

### Cite

S. Schuller, S. Gossé, J. Rogez. Glass, crystallization and phase separation an insight into glass enriched in MoO$_3$. Joint ICTP-IAEA Workshop on Fundamentals of Vitrification and Vitreous Materials for Nuclear Waste Immobilization (smr 3159), Nov 2017, Trieste, Italy. ⟨cea-02400187⟩

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