Influence of Electronic Irradiation on Failure and Hardness Properties of Pure Silica Glasses

M. Barlet (1) , J-M. Delaye (2) , M. Gennisson (3) , R. Caraballo (3) , B. Boizot (4) , Daniel Bonamy (5) , C.L. Rountree (6)

1 SPCSI - Service de Physique et de Chimie des Surfaces et Interfaces
2 SECM - Service d'Etudes du Comportement des Matériaux de Conditionnement
3 LMPA - Laboratoire des Matériaux et Procédés Actifs
4 LSI - Laboratoire des Solides Irradiés
5 SPEC - UMR3680 - Service de physique de l'état condensé
6 IRAMIS - Institut Rayonnement Matière de Saclay

This paper’s focus is the failure and hardness properties of pure amorphous silica (Corning 7980) after β-irradiation at different doses (0-2 GGy). Crack propagation takes place in the SCC regime (10−7-10−10 m.s−1) and Vickers indentation techniques probe the hardness properties of the samples. Irradiation is found to create point defects which mainly include E’ centers, Non-Bridging Oxygen Hole Centers and Peroxy Radicals. β-irradiation herein invokes minor changes in the structure. A small effect of β- irradiation on SCC and hardness variations cannot be eliminated, despite minute variations in the SCC and the hardness properties.

Domains: Material chemistry

M. Barlet, J-M. Delaye, M. Gennisson, R. Caraballo, B. Boizot, et al.. Influence of Electronic Irradiation on Failure and Hardness Properties of Pure Silica Glasses. 2nd International Summer School on Nuclear Glass Wasteform: Structure, Properties and Long-Term Behavior, SumGLASS 2013, Sep 2013, Pont du Gard, France. pp.286-293, ⟨10.1016/j.mspro.2014.10.037⟩. ⟨cea-01120966⟩