Heavy ion radiation ageing impact on long-term glass alteration behavior

Molecular dynamics simulation of ballistic effects in simplified nuclear waste glasses

“…It has been marked by various studies that decrease in boron coordination and depolymerisation in glasses, may affect the reactivity of the glass towards dissolution [2,22,[63][64][65][66][67]. Impact of other parameters such as evolution of angular and ring distribution, on dissolution of glass, are still not well understood.…”

“…Earlier studies conducted on the impact of radiation (α, β, and γ) reported no significant impact on glass alteration kinetics (both initial and residual rates) [16][17][18][19][20][21]. In contrast, recent experiments conducted by Mougnaud et al [22] in residual rate regime, using multiple energy gold ion irradiation with dominant nuclear dose(~200MGy), showed a significant increase of the alteration rate and thickness of the alteration layer in pre-irradiated glasses compared to non-irradiated glasses. In fact, changes in the residual rate and the alteration layer thickness appeared to attain saturation around the same deposited dose, and thus showed a behavior akin to that described above for structural properties.…”

Effects of Al:Si and (Al + Na):Si ratios on the properties of the international simple glass, part I: Physical properties

“…A simplified representation of borosilicate waste glasses known as the international simple glass (ISG) was designed and developed by the nuclear waste glass community to synergize efforts towards understanding waste glass properties and corrosion behavior. 15 ISG has been intensively researched with studies focusing on its physical 16 and mechanical properties, [17][18][19] structural insights obtained experimentally 20 and via computer simulations, [21][22][23][24] surface quality, 19,25 waste loading, 26 radiation effects, [27][28][29][30] dissolution behavior under different testing conditions, [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] dissolution kinetic models, 50,51 as well as characterization of alteration layers using advanced techniques. 34,[52][53][54][55][56] The wealth of data associated with this glass made it a logical choice to study the impact of Al 2 O 3 concentrat...…”

ToF-SIMS depth profiling of altered glass

“…7 ToF-SIMS depth profiling capacity is also particularly interesting for the corrosion community, because it facilitates the characterization of both pristine and altered materials, and allows the proposition of formation mechanisms for the latter. [8][9][10][11][12][13][14][15] In particular, silicate glass corrosion work is of great interest for heritage material conservation, 16,17 geochemistry, 18 and nuclear waste management. 19,20 Some examples are curators in museums who are confronted with patrimonial object degradation and conservation, 21,22 glass industries that aim to produce resistant glass composition for glassware 23 and building, 24 and medical applications that require highly soluble glasses for drug delivery.…”

“…As an example, it was recently demonstrated that the size of the probed area impacts the profile width at the pristine glass/gel interface due to an increase in surface roughness. 12,42 This can be problematic, as the shape of the anti-correlated profiles of H and B is used to determine the diffusion coefficient of mobile species. 30,[42][43][44][45] Furthermore, elemental normalized concentrations or isotopic ratios are generally plotted against depth after the measurement of the crater depth at the end of the analysis.…”