Table 1.
Borate glass composition (mol%) determined by ICP-AES. 2B–6Sr was prepared by 6% MgO substituted by SrO; 2B–12Sr was prepared by 8% MgO and 4% CaO substituted by SrO. A: theoretical value; B: experimental value (mean±SD, n=5). The calculated composition is close to the expected.
| glass | Na2O | K2O | MgO | CaO | SrO | SiO2 | B2O3 | P2O5 |
|---|---|---|---|---|---|---|---|---|
| 2B–0Sr | ||||||||
| A | 6 | 8 | 8 | 22 | 0 | 18 | 36 | 2 |
| B | 6.8 ± 0.9 | 6.9 ± 1.2 | 7.7 ± 0.9 | 21.2 ± 2.7 | 0 | 19 ± 3.3 | 36.4 ± 6.1 | 2 ± 1.1 |
| 2B–6Sr | ||||||||
| A | 6 | 8 | 2 | 22 | 6 | 18 | 36 | 2 |
| B | 6.6 ± 1.7 | 7.1 ± 1.9 | 1.9 ± 0.4 | 21.8 ± 2.6 | 5.8 ± 1.5 | 19.2 ± 2.2 | 35.8 ± 4.7 | 1.8 ± 0.9 |
| 2B–12Sr | ||||||||
| A | 6 | 8 | 0 | 18 | 12 | 18 | 36 | 2 |
| B | 6.7 ± 1.1 | 6.9 ± 1.5 | 0 | 17.7 ± 2.1 | 11.6 ± 2.3 | 18.8 ± 1.7 | 36.4 ± 5.2 | 1.9 ± 0.6 |