Predicting zeolites’ stability during the corrosion of nuclear waste immobilization glasses: Comparison with glass corrosion experiments

Zhen-Wu, Bi Yun; Prentice, Dale P.; Simonetti, Dante A.; Ryan, Joseph V.; Sant, Gaurav; Bauchy, Mathieu

doi:10.1016/j.jnucmat.2021.152813

Cited by 7 publications

(1 citation statement)

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“…In the process of transportation and storage, glass will inevitably interact with external substances, and its excellent mechanical properties can ensure that it has sufficient resistance towards external forces such as friction and extrusion [13][14][15]. However, pharmaceutical glass will corrode during long-term contact with drugs, resulting in changes of mechanical properties [16,17]. Understanding the corrosion mechanism and the influence of corrosion on its mechanical properties is critical to improve the performance of the glass in practical application conditions.…”

Section: Introductionmentioning

confidence: 99%

Impact of Chemical Corrosion on Mechanical Properties of Boroaluminosilicate Pharmaceutical Glasses

Ma,

Liu,

Zhang

et al. 2024

Materials

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Boroaluminosilicate (BAS) glasses have excellent chemical durability and mechanical properties and are widely used in the pharmaceutical packaging industry. The corrosion behavior of boroaluminosilicate (BAS) glasses have been investigated for many years; however, the impact of chemical corrosion on mechanical properties of boroaluminosilicate glasses has not been well understood. In this work, the BAS glass samples were corroded in a 20 mM Glycine–NaOH buffer solution (pH = 10) at 80 °C for various durations. Within the corrosion durations, the corrosion of the glass is dominated by congruent dissolution. The results show that the elemental composition and structure of the glass surface are not altered significantly during the congruent dissolution, and the corrosion rate is mainly affected by the Si concentration in the solution. The structural change in the process of micro-crack decay is the main factor affecting the mechanical properties of the glass surface. Corrosion leads to the growth of micro-cracks and tip passivation, which causes the hardness and elastic modulus of the glass to first decrease and then increase. As corrosion proceeds, the microcracks are completely destroyed to form micropores, and the pore size and number increase with the corrosion process, resulting in the decrease in surface mechanical properties again. This work reveals the main influencing factors of congruent dissolution on mechanical properties and provides an important reference for the improvement of pharmaceutical glass strength.

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