Composition-dependent mechanical property changes and damage recovery in He-ion-irradiated borosilicate glasses
Source abstract
Abstract
This study explored the mechanical property changes in three kinds of pristine and Au 3+ pre-irradiated Na 2O-B 2O 3-SiO 2 (labeled as NBS) glasses induced by 0.5-MeV He 2+ ions over a broad fluence range. The glass samples were prepared with different R values = [Na 2O]/[B 2O 3] (0.40, 0.75 and 1.34). After He-ion irradiation, the hardness diminished and finally reached saturation, the modulus showed a slight decrease for the NBS1 and NBS2 glasses, but the NBS3 glass exhibited no significant change. The mono He 2+ ion irradiation scenario did not show the self-recovery effect of Au 3+ ion irradiation scenario. The sequential He-ion irradiation can lead to damage recovery in the Au-ion pre-irradiated glasses. The final equilibrium state was affected by the composition of pristine glass, which can be attributed to lower thermal stability and the phase separation characteristic of NBS3 glass. Such results hold great significance for understanding the radiation damage caused by multiparticle irradiation in the glass matrix of nuclear wastes.
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Research context
OpenAlex topics: Glass properties and applications · Nuclear materials and radiation effects · High-pressure geophysics and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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