Hydrogen Isotope Research Center - Toyama Univ.
Data Base for Tritium Solid Breeding Materials (Li2O, Li2TiO3, Li2ZrO3 and Li4SiO4) of Fusion Reactor Blankets --- Yoshiaki FUTAMURA
7. Database for Li4SiO4 (αLi4SiO4)
7.1 Physical and thermal properties
7.1.1 Crystalline structure
| No. | Data and remark | Fig. | Refs. |
| 1 | Monoclinic | - | 8 |
| Notes1 | Phase change temp. : 660°C | - | - |
7.1.2 Molecular weight (g/g-mol)
| No. | Data and remark | Fig. | Refs. |
| 1 | 120.126(1–3.315×10-2δ), δ:6Li fraction in Li | - | 8 |
7.1.3 Density and Li density (g/cm3)
| No. | Data and remark | Fig. | Refs. |
| 1 | 2.3993(1–3.332×10-2δ), δ: 6Li fraction in Li | - | 9 |
| Notes1 | Li density, (g/cm3) : 0.4805δ for 6Li, 0.5604 (1–δ) for 7Li | - | 9 |
7.1.4 Melting point (°C)
| No. | Data and remark | Fig. | Refs. |
| 1 | 1255°C | - | 8 |
7.1.5 Thermal conductivity (W/m-K)
| No. | Data and remark | Fig. | Refs. |
| 1 | k=(1–p)5/3(2.49)[(1+2.06×10-3T)-1+1.85×10-10T3]
0.16≦p (porosity)≦0.30, 373≦T≦873K |
- | 80, 81 |
7.1.6 Thermal expansion
| No. | Data and remark | Fig. | Refs. |
| 1 | Thermal expansion
Linear expansion, (%) : ΔL/L0 Instantaneous coef., (1/K) : α Mean coef., (1/K) : αm ΔL/L0=1.267×10-3(1+1.065×10-3T)(T–298) α=8.669×10-6(1+1.312×10-3T) αm=121.67×10-6(1+1.065×10-3T) 298≦T≦1273K |
- | 82 |
7.1.7 Specific heat (kJ/kg-K)
| No. | Data and remark | Fig. | Refs. |
| 1 | Cp=0.890+1.46×10-3T+4.01×103T2, 272≦T≦873K | - | 89, 83 |
7.1.8 Heat capacity --- No data
7.1.9 Vapor pressure (Pa)
| No. | Data and remark | Fig. | Refs. |
| 1 | logP(Li)=14.948–23602/T
logP(O2)=14.769–24473/T : 1385≦T≦1516K logP(Li2O)=21.651–36223/T logP(LiOH)=8.686–11580/T : at P(H2O)=10.1 Pa |
- | 84, 85 |
7.1.10 Thermal diffusivity
| No. | Data and remark | Fig. | Refs. |
| 1 | Thermal diffusivity of 80%TD ceramic breeder materials (Li4SiO4, Li2O, Li2TiO3 and Li2ZrO3). | 7.7 | 12 |
