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 Li2
4.1 Physical and thermal properties
4.1.1 Crystalline structure
| No. | Data and remark | Fig. | Refs. |
| 1 | Cubic | - | 8 |
| Notes1 | Phase change temp. : 370°C | - | - |
4.1.2 Molecular weight (g/g-mol)
| No. | Data and remark | Fig. | Refs. |
| 1 | 30.0314–2.002δ : δ= atom fraction 6Li in Li | - | 8 |
| Notes1 | 28.2296 : δ= 0.9, 6Li enrichment : 90% | - | - |
4.1.3 Density and Li density (g/cm3)
| No. | Data and remark | Fig. | Refs. |
| 1 | 2.0338(1–0.06665δ) : δ= atom fraction 6Li in Li | - | 9 |
| 2 | 1.529 : δ= 0.9, 80%TD | - | 9 |
| Notes1 | 6Li density : 0.815δ
7Li density : 0.950(1–δ) |
- | 10 |
4.1.4 Melting point (°C)
| No. | Data and remark | Fig. | Refs. |
| 1 | 1432±6°C | - | 8, 10 |
4.1.5 Thermal conductivity (W/m-K)
| No. | Data and remark | Fig. | Refs. |
| 1 | κ= (1–ρ)1.96[39.79(1+7.067×10-3T)-1]
0.066≦ρ (porosity)≦0.292, 473K≦T≦1173K |
- | 11 |
| 2 | 3.54 ; ρ= 0.2, 80%TD, 600°C | - | 10, 11 |
| Notes1 | Thermal conductivity data for porous Li2O (80%TD). | 4.1 | 11, 68 |
| Notes2 | Thermal conductivities for Li2O, Li2ZrO3, Li4SiO4, Be and 316SS. | 4.2 | 7, 10, 11 |
4.1.6 Thermal expansion
| No. | Data and remark | Fig. | Refs. |
| 1 | Linear expansion, (%) : ΔL/L0
Instantaneous coef., (1/K) :α Mean coef., (1/K) :αm ΔL/L0=1.87×10-3(1+4.49×10-4T)(T–298) α=1.605×10-5(1+1.072×10-3T) αm=1.87×10-5(1+4.49×10-4T) : 298≦T≦1223K |
- | 9 |
| 2 | Thermal expansion for single crystal Li2O. | 4.4 | 9, 12 |
| Notes1 | Linear thermal expansion of Li2O, Li2ZrO3, Li4SiO4, Be and 316SS. | 4.3 | 10, 11 |
4.1.7 Specific heat (kJ/kg-K)
| No. | Data and remark | Fig. | Refs. |
| 1 | Cp=2.5179+3.328×10-4T–8.382×104/T2 : 306≦T≦1073K | - | 9 |
| 2 | 1.692 : T=300K | - | - |
4.1.8 Heat capacity (J/mol.-K)
| No. | Data and remark | Fig. | Refs. |
| Cp=75.24+9.95×10-3×T–25.05×105/T2 : 306≦T≦1073K | - | 13 | |
| 2 | 80.64 : T=873K | - | - |
| 3 | Cp=63.44+23.42×10-3×T–14.09×105/T2 : 373≦T≦1125K | - | 14 |
4.1.9 Vapor pressure (Pa)
| No. | Data and remark | Fig. | Refs. |
| 1 | logP(Li)=–(18.19×103/T)+12.09
logP(LiO)=–(19.85×103/T)+11.21 logP(Li2O)=–(20.60×103/T)+13.40 : 1532≦T≦1073K |
- | 15 |
4.1.10 Thermal diffusivity
| No. | Data and remark | Fig. | Refs. |
| 1 | Thermal diffusivity of Li2O, Li2ZrO3 and Li4SiO4 (80%TD). | 4.37 | 12 |
