Influence of temperature and relative humidity on vapor hydration of an AVM nuclear waste glass

Narayanasamy, Sathya; Jollivet, Patrick; Sessegolo, Loryelle; Angeli, Frédéric; Abdelouas, Abdesselam

doi:10.1016/j.jnucmat.2020.152571

Cited by 10 publications

(13 citation statements)

References 40 publications

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“…By closely observing the ToF-SIMS profiles in our previous studies, a similar combined enrichment of Na + and H + has been observed in some cases 27,31,37 .…”

Section: Vapor Phase Alterationsupporting

confidence: 80%

“…Surprisingly, the gel layer thickness measured using ToF-SIMS does not correspond with the thickness measured through SEM images. In literature, a good correspondence between gel layer thickness measured between SEM and ToF-SIMS has been frequently reported 27,[29][30][31] , which makes the discrepancy in our study enigmatic. The following hypothesis could be considered, although it is not verifiable for these samples.…”

Section: Vapor Phase Alterationmentioning

confidence: 47%

“…In many vapor hydration studies, boron is the element that is the most depleted in the altered layer (in depth and in quantity) 25,27,29,31,37,50 . Retention of boron in the gel layer is often less than 10-20%.…”

Section: Normalized Intensity ¼mentioning

confidence: 99%

“…Some of these experimental data have been useful to develop geochemical, empirical or structure-based models to predict glass alteration rates, at least during specific alteration stages [18][19][20][21][22][23][24] . On the other hand, the studies investigating nuclear waste glass alteration in humid conditions (referred to as vapor hydration or vapor phase alteration) are relatively fewer [25][26][27][28][29][30][31][32] . A generalized understanding of the predominant glass alteration mechanisms in the vapor phase is yet to be achieved.…”

Section: Introductionmentioning

confidence: 99%

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Borosilicate glass alteration in vapor phase and aqueous medium

et al. 2022

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A Na-alumino-borosilicate glass and its Ca-doped counterpart were altered in vapor phase (98% relative humidity) and aqueous medium at 90 °C. Both the alteration media were enriched in 17O. Characterization of the altered samples pointed out some differences between glass alteration in aqueous medium and vapor phase in terms of the alteration kinetics, the effect of Ca-doping on glass chemical durability, the behavior of elements in the gel layer, and the structure of the gel layer. Some of the key results are the recondensation of boron in the gel layer formed in the vapor phase and the utility of Rotation Echo DOuble Resonance Nuclear Magnetic Resonance spectroscopy to qualitatively distinguish between signals from the pristine glass and hydrated gel layer within a sample that was not altered to the core. The results gave rise to inferences about glass alteration mechanisms in both the alteration media and the differences between them.

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“…By closely observing the ToF-SIMS profiles in our previous studies, a similar combined enrichment of Na + and H + has been observed in some cases 27,31,37 .…”

Section: Vapor Phase Alterationsupporting

confidence: 80%

Section: Vapor Phase Alterationmentioning

confidence: 47%

Section: Normalized Intensity ¼mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Borosilicate glass alteration in vapor phase and aqueous medium

et al. 2022

Self Cite

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“…It was first published by PNNL in 1999 and accepted in 2009 as ASTM C1663 Standard Test Method for Measuring Waste Glass or Glass Ceramic Durability by Vapour Hydration Test 88,89 . An almost identical method [90][91][92] controls the relative humidity within the experimental system using a saline solution and allows a VHT-like test to be performed at lower temperatures representing dissolution by water vapour rather than liquid water. In the ASTM C1663 VHT method polished glass coupons (medium polish 30 micron) are suspended by a platinum wire holder in a sealed stainless steel containment vessel, which is then subjected to temperatures of up to 200 °C for a standard duration of 28 days though shorter or longer durations are possible (Fig.…”

Section: Glass Durability Under Static Non-dilute Conditions In Steammentioning

confidence: 99%

Forty years of durability assessment of nuclear waste glass by standard methods

et al. 2021

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Standard methods to assess the durability of vitrified radioactive waste were first developed in the 1980’s and, over the last 40 years, have evolved to yield a range of responses depending on experimental conditions and glass composition. Mechanistic understanding of glass dissolution has progressed in parallel, enhancing our interpretation of the data acquired. With the implementation of subsurface disposal for vitrified radioactive waste drawing closer, it is timely to review the available standard methodologies and reflect upon their relative advantages, limitations, and how the data obtained can be interpreted to support the post-closure safety case for radioactive waste disposal.

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High Relative Humidity‐Induced Growth of Perovskite Nanowires from Glass toward Single‐Mode Photonic Nanolasers at Sub‐100‐nm Scale

Wang,

Li,

Chen

et al. 2024

Advanced Science

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Metal halide perovskites (MHPs) have achieved substantial progress in their applications; however, their ionic crystal character and low formation energy result in poor structural stability and limited morphological tunability. In particular, high relative humidity (RH) commonly causes severe MHP degradation, which poses a major obstacle to long‐term device operation. Herein, high RH‐induced growth of anisotropic MHP structures on glass surfaces is reported under 25 °C and atmospheric conditions on a basis of glass corrosion by moisture. Nanowires (NWs) with tunable length and composition are obtained under 85% RH air, and water molecule‐induced facet engineering of perovskite is established for anisotropic growth. Importantly, single‐mode photonic lasing in these MHP NWs with thickness at sub‐100‐nm scale (down to 75 nm ∼ 1/7 lasing wavelength) is achieved via both one‐photon and multiphoton pumping. These nanowire lasers exhibited high quality factor (>3000), high degree of polarization (≈0.9), and excellent stability under laser irradiation. The work not only presents a distinctive technique for the growth of MHPs but also endows MHP NWs with new opportunities for nonlinear optics, strong light‐matter interactions, and active photonic integrated devices.

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Influence of temperature and relative humidity on vapor hydration of an AVM nuclear waste glass

Cited by 10 publications

References 40 publications

Borosilicate glass alteration in vapor phase and aqueous medium

Borosilicate glass alteration in vapor phase and aqueous medium

Forty years of durability assessment of nuclear waste glass by standard methods

High Relative Humidity‐Induced Growth of Perovskite Nanowires from Glass toward Single‐Mode Photonic Nanolasers at Sub‐100‐nm Scale

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