Hydrogen Isotope Research Center - Toyama Univ.

Data Base for Tritium Solid Breeding Materials (Li₂O, Li₂TiO₃, Li₂ZrO₃ and Li₄SiO₄) of Fusion Reactor Blankets --- Yoshiaki FUTAMURA

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6. Database for Li₂ZrO₃

6.1 Physical thermal properties

6.1.1 Crystalline structure

No.	Data and remark	Fig.	Refs.
1	Monoclinic < 1100°C, Cubic > 1100°C	-	8, 6
Notes1	Phase change : 1100°C	-	-

6.1.2 Molecular weight (g/g-mol)

No.	Data and remark	Fig.	Refs.
1	153.25(1–1.31×10-2δ) : δ=6Li fraction in Li	-	8, 60

6.1.3 Density and Li density (g/cm³)

No.	Data and remark	Fig.	Refs.
1	4.1573(1–1.31×10-2δ) : δ=6Li fraction in Li	-	8

6.1.4 Melting point

No.	Data and remark	Fig.	Refs.
1	1695±15°C	-	85, 69

6.1.5 Thermal conductivity (W/m-K)

No.	Data and remark	Fig.	Refs.
1	k=(1–p)5/3[3.643(1+1.549×10-3T)-1+7.579×10-10T3]     0.187≦p (porosity)≦0.211, 373≦T≦1063K	-	70
2	κ=0.0102+6.68T-1 (W/cm-K), <670K, 78.9%TD	-	72
3	1.8 (W/m-K), 800K, 85%TD	-	6
4	Thermal conductivity for Li2ZrO3 (80%TD).	6.1	17

6.1.6 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=9.89×10-4(1+1.13×10-5T)(T–298)         α=9.86×10-6(1+2.27×10-5T)         αm=9.89×10-6(1+1.13×10-5T)	-	63
2	9.99×10-6 (1/K), (Mean coef., T=898K)	-	84

6.1.7 Specific heat (kJ/kg-K)

No.	Data and remark	Fig.	Refs.
1	Cp=1.022–3.696×10-5T–2.791×104T-2 : 350≦T≦1012K	-	73
2	0.7 (kJ/kg-K), 300K	-	6

6.1.8 Heat capacity (J/K-mol)

No.	Data and remark	Fig.	Refs.
1	Cp = 114.7+4.772×10-2+7.214×102/T2 : 350≦T≦750K	-	72, 6
2	912 (J/kg-K)	-	50

6.1.9 Vapor pressure (Pa)

No.	Data and remark	Fig.	Refs.
1	logP(Li)=–18.39×103/T+10.69 : 1031≦T≦1642K	-	74

6.1.10 Thermal diffusivity

No.	Data and remark	Fig.	Refs.
1	4.94×10-7 (m2/s) at 500°C, 80%TD, Li/Zr=1.9 From 6.175(1–p) at 500°C, p : porosity	-	50
2	Thermal diffusivity of 80%TD Li2ZrO3, 80%TD Li2O and 80%TD Li4SiO4.	6.13	12