Changes in macroscopic and microscopic properties of borosilicate glass irradiated with ions

Chen, L. T.; Mao, Jiangjiang; Mao, Yu; Zhang, X. Y.; Sun, Mian; Wang, T. T.; Wang, T. S.; Peng, Haibo

doi:10.1080/10420150.2021.1955253

Cited by 6 publications

(12 citation statements)

References 63 publications

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“…Two primary effects are believed to mainly account for the as‐observed enhanced BS glass tolerance to ion irradiation for increasing (average) M z+ /Na + field strength: (i) The overall weakest M z +… O interactions in the glass structure become stronger, thereby also naturally increasing their ability to reform upon high‐dose irradiation. (ii) In accordance with previous findings, the weakest spots of the glass network are the B [4] –O bonds 35,39,45–49,51,52 (i.e., when disregarding the electrostatic M z +… O interactions), where we along previous suggestions 32,51 more firmly located the B [4] –O–Si bridges as those initially breaking upon ion irradiation.…”

Section: Discussionsupporting

confidence: 92%

“…O interactions in the glass structure become stronger, thereby also naturally increasing their ability to reform upon high-dose irradiation. (ii) In accordance with previous findings, the weakest spots of the glass network are the B [4] -O bonds 35,39,[45][46][47][48][49]51,52 (i.e., when disregarding the electrostatic M z+. .…”

Section: Discussionsupporting

confidence: 90%

“…along the lines of previous suggestions of [BO 4 ] -→ BO 3 conversions being largely responsible for the mechanical property reduction upon irradiation. 35,[45][46][47][48][49]51,52 Hence, a BO atom converts into an NBO anion, while the coordination number of B is decreased according to [BO 4 ] -→ BO 3 (also see Figure 8 of ref. 51).…”

Section: Structural Rationalization Of the δH/cfs Relationshipmentioning

confidence: 99%

“…25,31,43,44 Local glassstructure alterations account for the degraded mechanical properties upon irradiation. 28,32,35,39,[45][46][47][48][49][50][51][52] Yet the precise structural modifications remain debated, where previous studies have attributed the reduced mechanical properties to the breaking of either 39,[45][46][47][48][49]51,and 52) or B-O (refs. 39, 46, 47, 49, and 50) bonds in the glass network, where B [4] -O bond breaking implies [BO 4 ] -→ BO 3 along with BO → NBO conversions.…”

Section: Introductionmentioning

confidence: 99%

“…41 and 42) or complex multicomponent commercial glasses for nuclear waste storage 25,31,43,44 . Local glass‐structure alterations account for the degraded mechanical properties upon irradiation 28,32,35,39,45–52 . Yet the precise structural modifications remain debated, where previous studies have attributed the reduced mechanical properties to the breaking of either Si–O (refs.…”

Section: Introductionmentioning

confidence: 99%

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Cation field‐strength effects on ion irradiation‐induced mechanical property changes of borosilicate glass structures

Sun

Wang

et al. 2023

J Am Ceram Soc.

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We examine the impact of the glass network-modifier cation field strength (CFS) on ion irradiation-induced mechanical property changes in borosilicate (BS) glasses for the ternary M 2 O-B 2 O 3 -SiO 2 systems with M = {Na, K, Rb} and the quaternary [0.5M (2) O-0.5Na 2 O]-B 2 O 3 -SiO 2 systems with M = {Li, Na, K, Rb Mg, Ca, Sr, Ba}. 11 B nuclear magnetic resonance (NMR) experiments on the as-prepared BS glasses yielded the fractional population of four-coordinated B species (B [4] ) out of all {B [3] , B [4] } groups in the glass network, along with the fraction of B [4] -O-Si linkages out of all B [4] -O-Si/B bonds. Both parameters correlated linearly with the (average) CFS of the M + and/or {M (2)+ , Na + } cations. Both the nanoindentation-derived hardness and Young's modulus values of the glasses reduced upon their irradiation by Si 2+ ions, with the property deterioration decreasing linearly with increasing M z+ CFS, that is, for higher M z+ ⋯O interaction strength. The irradiation damage of the glass network also increased linearly with the fraction of B [4] -O-Si linkages, which are the second weakest in the structure after the M z+ ⋯O bonds. Our results underscore the advantages of employing BS glasses with high-CFS cations for enhancing the radiation resistance for nuclear waste storage.

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Section: Discussionsupporting

confidence: 92%