Table 1 Sample details, experimental conditions, and properties of the SAL
From: Towards a unifying mechanistic model for silicate glass corrosion
Glass composition | SiO 2 (mol%) | ZrO 2 (mol%) | Al 2 O 3 (mol%) | B 2 O 3 (mol%) | CaO (mol%) | Na 2 O (mol%) | Density (g cm−3) | |
|---|---|---|---|---|---|---|---|---|
ISG | 60.7 (7) | 1.7 (1) | 3.8 (1) | 16.0 (8) | 5.6 (1) | 12.3 (15) | 2.41 (14) | |
QBG | 65.9 (10) | 4.2 (1) | 11.9 (7) | 0.09 (1) | 17.9 (2) | 2.48 (2) |
Solution composition | pH init,RT | SA/V (mm² mL−1) | SiO2 (mmol L−1) | KOH (mmol L−1) | BH3O3 (mmol L−1) | CaCl2 (mmol L−1) | D/H | 18/16 O |
|---|---|---|---|---|---|---|---|---|
Precorrosion | 7.0 (0) | ~2.7 | 2.2 (3.1% 30Si) | 6.0 (1) | ~0.0001 | 0.002 | ||
Tracer | 7.0 (0) | ~24 | 5.9 (99% 30Si) | 12.1(1) | 4.1 (99% 10B) | 0.76 (97% 44Ca) | 0.225 | 0.231 |
Experiments | ISG | QBG | ||||||
|---|---|---|---|---|---|---|---|---|
Temperature (°C) | 90 (1) | 150 (2) | 90 (1) | 150 (2) | 90 (1) | 150 (2) | 90 (1) | 150 (2) |
Condition | Pristine | Pristine | Precorroded | Precorroded | Pristine | Pristine | Precorroded | Precorroded |
Duration (months) | 3 | 3 | 7 + 3 | 7 + 3 | 3 | 3 | 7 + 3 | 7 + 3 |
pHfinal,RT | 7.6 (0) | 7.7 (0) | 8.1 (0) | 8.1 (0) | 7.7 (0) | 8.0 (0) | 8.3 (0) | 8.4 (0) |
Rim thicknessa(µm) | 1.63 (11) | 0.68 (21) | 2.97 (25) | 2.70 (21) | 0.93 (22) | 1.92 (21) | 2.42 (7) | 4.09 (26) |
Avg. 18O/16O | 0.05385 (69) | 0.04449 (72) | 0.08263 (82) | 0.03602 (20) | 0.07709 (38) | 0.07774 (28) | 0.03263 (12) | 0.07587 (28) |
