2009
DOI: 10.1007/s12034-009-0047-3
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Surface degradation behaviour of sodium borophosphate glass in aqueous media: Some studies

Abstract: The degradation behaviour of phosphate glass with nominal composition, 40Na 2 O-10BaO-xB 2 O 3 -(50-x)P 2 O 5 , where 0 ≤ x ≤ 20 mol%, was studied in water, HCl and NaOH solutions at room temperature to 60°C for different periods extending up to 300 h. These glasses were synthesized by conventional melt-quench technique. Dissolution rates were found to increase with B 2 O 3 content in the glass. The dissolution rates for the glass having 10 mol% B 2 O 3 were found to be 0⋅002 g/cm 2 and 0⋅015 g/cm 2 in distill… Show more

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Cited by 21 publications
(15 citation statements)
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“…As it is known that quantification of ultra-light elements is a challenge for EDS and generally gives unreliable results [32]; the nominal compositions given in Table 1 were found by using the EDS Na/P ratios and assuming that all boron contents in the precursor materials were converted to B 2 O 3 in the glass. Bulk densities of the glasses were found to vary between 2.57 and 3.87 g cm −3 and comparable to those of the alkaline borophosphate glasses showing a non-linear behavior with boron addition [14,33].…”
Section: Characterization Of the Glassessupporting
confidence: 52%
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“…As it is known that quantification of ultra-light elements is a challenge for EDS and generally gives unreliable results [32]; the nominal compositions given in Table 1 were found by using the EDS Na/P ratios and assuming that all boron contents in the precursor materials were converted to B 2 O 3 in the glass. Bulk densities of the glasses were found to vary between 2.57 and 3.87 g cm −3 and comparable to those of the alkaline borophosphate glasses showing a non-linear behavior with boron addition [14,33].…”
Section: Characterization Of the Glassessupporting
confidence: 52%
“…The presence of B\O\P bonds and B\OH groups in the glass precursors facilitates the nucleation of these phases. The pattern for G6 showed a single broad diffraction maximum around 30°as noted for sodium borophosphate glasses [14].…”
Section: Characterization Of the Glassesmentioning
confidence: 64%
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“…Borophosphate glasses can provide a high amount of non-bridging oxygens that are apparently necessary to stabilize Sm 2+ , brought by tetrahedral boron and phosphorus species. Furthermore, borophosphate glasses are able to provide good chemical durability [11][12][13][14][15][16]. Given the above observations, we have decided to synthesize four types of Sm-doped oxyfluoride glasses that can potentially allow the conversion of Sm 3+ to Sm 2+ upon irradiation with x-rays.…”
Section: Introductionmentioning
confidence: 99%