Hydrogen Isotope Research Center - Toyama Univ.
Data Base for Tritium Solid Breeding Materials (Li2O, Li2TiO3, Li2ZrO3 and Li4SiO4) of Fusion Reactor Blankets --- Yoshiaki FUTAMURA
4. Database for Li2O
4.3 Chemical stability and compatibility
4.3.1 Compatibility with water
| No. | Data and remark | Fig. | Refs. |
| 1 | Interaction with liquid water :
Li2O+H2O→2LiOH+125 kJ/mol LiOH |
- | 6, 8 |
| Notes1 | Interactions between water and 600°C ceramics thrown into 90°C water are shown in the following Appendix 4.3.1. | - | 6, 21, 22 |
Appendix 4.3.1 Interactions between water and 600°C ceramic breeder materials thrown into 98°C water.21)
| Breeder material | Chemical heat release | H2 generation (mol H2/g) |
Time to reach peak temp. (s) |
| Li2O | Mild | 2.7×10-3 | 90 |
| Li2ZrO3 | None | None | ---------- |
| Li4SiO4 | None | None | ---------- |
4.3.2 Compatibility with structural material
| No. | Data and remark | Fig. | Refs. |
| 1 | Interaction with 316SS (wastage=d mm)
D=1.06×103exp(–5920/T) t0.5 773≦T≦1073K, 100≦t≦5600 hr |
- | 23, 24, 25, 28, 29, 30 |
| 2 | Lower temperature limits for Li2O interface with structural
materials.
550°C ----- 316SS 600°C ----- HT9 |
- | 25 |
| 3 | Chemical reaction between ceramic breeder materials (Li2O, Li4SiO4) during reaction time normalized to 100 hr. | 4.14 | 25 |
| Notes1 | Recommendable upper temperature limits for ceramic breeder materials from
the viewpoint of chemical reaction.
Li2O-----680°C Li4SiO4-----910°C Li2SiO3-----990°C |
- | 6 |
4.3.3 Compatibility with Beryllium --- No data
4.3.4 Compatibility with acid --- No data
4.3.5 Compatibility with reprocessing liquid --- No data
