Hydrogen Isotope Research Center - Toyama Univ.
Data Base for Tritium Solid Breeding Materials (Li2O, Li2TiO3, Li2ZrO3 and Li4SiO4) of Fusion Reactor Blankets --- Yoshiaki FUTAMURA
6. Database for Li2ZrO3
6.2 Mechanical properties
6.2.1 Young' modulus (GPa)
No. | Data and remark | Fig. | Refs. |
1 | E=203.5(1p)(11.286p)2[12.40×10-4(T293)]
T=293K, p : porosity |
- | 75 |
2 | 73(GPa), from ν=205.2(1p)(11.28p)2, p : porosity | - | 50 |
Notes1 | Young's Modulus values for Li2ZrO3, Li2O and Li4SiO4. | 6.2 | 50 |
6.2.2 Poisson's ratio
No. | Data and remark | Fig. | Refs. |
1 | ν=0.2 | - | 76 |
2 | ν=0.267, (80%TD, Li/Zr=1.9)
ν=0.342(11.09p), (p : porosity, Li/Zr=1.9) |
- | 50 |
6.2.3 Tensile strength (MPa) --- No data
6.2.4 Compressive strength (MPa)
No. | Data and remark | Fig. | Refs. |
1 | Ultimate compressive strength
σc=396 MPa, dg (grain diameter in μm)=0.8 μm, 80%TD |
- | 75, 73 |
2 | Ultimate compressive strength
σc=230±31 MPa, dg = 2 μm, 80%TD |
- | 75, 73 |
Notes1 | Compressive strengths for Li2ZrO3, Li2O and Li4SiO4. | 6.3 | 17 |
6.2.5 Bending strength (MPa)
No. | Data and remark | Fig. | Refs. |
1 | Ultimate bending strength
σb=65±15 MPa, 25°C, dg=2 μm, 80%TD |
- | 73 |
2 | Ultimate bending strength
σb=60±20 MPa, 400°C, dg=2 μm, 80%TD |
- | 73 |
3 | Ultimate bending strength
σb=63±1 MPa, 600°C, dg=2 μm, 80%TD |
- | 73 |
6.2.6 Rupture strength (MPa)
No. | Data and remark | Fig. | Refs. |
1 | 65 MPa, from 1.21(12.32p), p: porosity, 80%TD, Li/Ti=1.9 | - | 50 |
6.2.7 Crush strength --- No data
6.2.8 Thermal creep rate (1/s)
No. | Data and remark | Fig. | Refs. |
1 | 2×10-6 (26 MPa) : at 900°C | - | 77, 12 |
2 | 8×10-6 (745 MPa) : at 900°C | - | 77, 12 |
3 | 4×10-5 (144 MPa) : at 900°C | - | 77, 12 |
6.2.9 Vickers hardness (MPa)
No. | Data and remark | Fig. | Refs. |
1 | 504.6(12.36p) MPa, p : porosity | - | 50 |
2 | 263.4 MPa, 80%TD | - | 50 |
6.2.10 Thermal shock resistance
No. | Data and remark | Fig. | Refs. |
1 | Crack generation due to the thermal strain is determined by using the
following thermal shock parameters.
R'=σf·κ·(1ν)/Eα σf : tensile strength κ : thermal conductivity υ : Poisson's ratio E : Young's modulus α : thermal expansion coefficient Thermal shock resistance is actually estimated by the value of κ/Eα. The value of κ/Eα at 600°C for ceramic breeder materials are shown in the following Appendix 6.2.10. |
- | 6 |
Appendix 6.2.10 Material properties related to the generation of thermal crack in ceramic breeder materials.6)
Material | κ (600°C)
(W/m-K) |
α (600°C)
(10-3K) |
E (R.T.)
(GPa) |
κ/Eα
(10-6m2/s) |
Li2O | 3.5 | 3.3 | 70 | 1.5 |
Li2ZrO3 | 1.4 | 1.1 | 70 | 1.8 |
Li4SiO4 | 1.9 | 3.6 | 50 | 1.1 |
6.2.11 Thermal cyclic loading properties
No. | Data and remark | Fig. | Refs. |
1 | Effects of thermal cyclic loading.
No fractured : Pellet (83%TD) 330→530°C, 30 MPa, 1000 cycles. |
- | 78 |
2 | Effects of thermal cyclic loading
Fractured significantly : Pebble (80%TD, 1mm in size, 40 μm grain size) 330→530°C, 30 MPa, 1000 cycles. |
- | 78 |