Fig. 4.1, 2, 3, 4

Figures of Chapter 4, Li2O

Fig.4.1 Thermal conductivity data for porous Li2O.
11)

Fig.4.2 Thermal conductivities for Li2O, Li2ZrO3,Li4SiO4, Be and 316 SS. 7)

Fig.4.4 Thermal expansion of single crystalLi2O. 9)

Fig.4.3 Linear thermal expansion strain(referenced to 25 ℃) for Li2O, Li2ZrO3,Li4SiO4, Be and 316SS. 10)

XFig.4.5, 6, 7, 8

Fig.4.6 Porosity dependence of Young’s Modulus
values for Li2O, Li2ZrO3 and Li4SiO4. 17) 6) 50)

Fig.4.5 Young’s Modulus values for Li2O, Li4SiO4,Be, PCA and HT9. 10) 6)

Fig.4.8 Calculated compressive failure strengths
for 80% TD Li2O, 80% TD Li4SiO4, Be, PCAand HT9. 16)

Fig.4.7 Calculated tensile failure strengths for
80% TD Li2O, 80%TD Li4SiO4, Be, PCA
and HT9. 16)

XFig.4.9, 10, 11, 12

Fig.4.9 Porosity dependence of compressivestrengths for Li2O, Li2ZrO3 and Li4SiO4. 17)

Fig.4.10 Bending failure strength for Li2O ( 80% TD,10 μm grain diameter). PCA and HT9tensile failure strengths shown forreference purposes. 11)

Fig.4.11 Secondary thermal creep rate for Li2O
(80% TD, 10 μm grain diameter) at
700℃. PCA and HT9 curves shown forreference purposes. 16)

Fig.4.12 Secondary thermal creep rate for Li2O
(80% TD, 10 μm grain diameter) at
800℃. 16)X

Fig.4.13, 14, 15, 16, 19

Fig.4.13 Compressive creep rates for Li2O and
Li4SiO4 (80% TD) (10MPa, 100h). 6)

Fig.4.15 Hydrogen solubility in Li2O at 10 Pa of H2or H2O. 19) 39) 12)

Fig.4.16 Temperature dependency of hydrogen andheavy hydrogen absorption for Li2O. 30) 31)

Fig.4.14 Chemical reaction between Li2O andLi4SiO4 and structure materials during
reaction time normalized to 100hr. 25)
Fig.4.19 Water vapor adsorption to Li2O. 32)

XFig. 4.17, 18, 20, 21, 23

Fig.4.20 Tritium solubility in Li2O crystal. 33)

Fig.4.17 Hydrogen solubility in Li2O. 31)

Fig.4.21 Hydrogen(○), Tritium(●), solubility inLi2O. 14)

Fig.4.18 Hydrogen solubility limit and criticalmoisture pressure in Li2O. 39)
Fig.4.23 Volumetric swelling of Li2O, Li2ZrO3 andLi4SiO4 at 700℃. 6) 49)

X

Fig. 4.22, 24, 25, 26

Fig.4.24 Diameter swelling of Li2O, Li2ZrO3 andLi4SiO4 at 500℃, 700℃, 900℃. 6) 70)

Fig.4.22 Relationship between burn up and swellingfor Li2O. 6) 30)

Fig.4.25

The grain size of irradiated Li2O, Li2ZrO3and Li4SiO4. The indicated grain size wasdetermined by a linear intercept method,
100 full power days. (1% atom 6Li burn-up).

Fig.4.26 Relationship between weight loss of Li2O
and temperature. 37)

36)

X

Fig.4.27, 28, 29, 30

Fig.4.28 Burn up dependency of Li-transfer for
Li2O, Li2ZrO3 and Li4SiO4. 56)

Fig.4.27 Equilibrium constant for the reaction
Li2O(s) + H2O = 2LiOH(g). 37)

Fig.4.30 Lattice diffusion coefficient for Li2O vs.
fluence. 41)

Fig.4.29 Lattice diffusion coefficient for lightly
irradiated Li2O from Tanifuji(T),Quanci(Q) and Guggi(G). 41)

XFig.4.31, 32, 33, 34

Fig.4.31 Diffusion coefficient of T in Li2O, Li2ZrO3and Li4SiO4. 33)

Fig.4.32 Summary of tritium diffusion coefficientin Li2O, Li2ZrO3, Li2TiO3 and Li4SiO4. 18)

Fig.4.34 Tritium retention in Li2O. 48)
Fig.4.33 Tritium residence times for Li2O. 47)

XFig.4.35, 36, 37

Fig.4.35

Tritium retention in Li2O, Li2ZrO3 andLi4SiO4 at 700 ℃. 49)

Fig.4.37 Thermal diffusivity of Li2O, Li2ZrO3 and
Li4SiO4 (80% TD). 12)

Fig.4.36 Helium retention in Li2O. 48)

X