ITER solid breeder blanket materials database

Billone, M.C.; Dienst, W.; Flament, T.; Lorenzetto, P.; Noda, K.; Roux, Nicole

doi:10.2172/10133224

Cited by 30 publications

(14 citation statements)

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“…The thermal conductivity of bulk Li20, LiA102, Li4Si04, and Li2Zr03 has been measured, and correlations have been derived as a function of porosity and temperature [13]. For materials of the same density, thermal conductivity ranks in the order Li20 > .-LiA102 > Li2Zr03 > Li4Si04.…”

Section: Materials Performancementioning

confidence: 99%

Ceramic breeder materials: Status and needs

Johnson

Noda

Roux

1998

Journal of Nuclear Materials

Self Cite

100

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Section: Materials Performancementioning

confidence: 99%

Ceramic breeder materials: Status and needs

Johnson

Noda

Roux

1998

Journal of Nuclear Materials

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100

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“…For example, the lithium loss of Li 4 SiO 4 at 727°C was less than that of Li 2 TiO 3 [8,9]. The thermal conductivity of Li 2 TiO 3 was higher than that of Li 4 SiO 4 [4,10]. The lithium density and tritium release at lower temperatures of Li 4 SiO 4 are higher than that of Li 2 TiO 3 , but the thermo-mechanical stability of Li 2 TiO 3 is better than that of Li 4 SiO 4 [11].…”

Section: Introductionmentioning

confidence: 97%

Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder

Xiang

Zhang

et al. 2015

J Fusion Energ

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Lithium based ceramics have been regarded as the promising ceramic breeders of the test blanket modules. As lithium burn-up of ceramic pebbles in the fusion reactor will be limited to about 15 % due to Li transmutation. The phase and composition (Li ? transferring process) of Li 2 TiO 3 -Li 4 SiO 4 ceramic pebbles with a certain amount of Li loss (-xLi 2 TiO 3 and -xLi 4 SiO 4 , x = 0, 5, 10, 20 %, molar ratio) were simulated by thermogravimetry and differential scanning calorimetry and X-ray diffractometer for the first time. The results showed that the Li ? of Li 4 SiO 4 could move to Li 4 Ti 5 O 12 to form Li 2 SiO 3 and Li 2 TiO 3 as the octahedral (16c) sites of Li 4 Ti 5 O 12 are empty. In order to tailor the properties for optimization, 20 % Li 2 TiO 3 -80 % Li 4 SiO 4 pebbles were fabricated by a graphite bed process. In combining these materials, the pebbles obtained reasonable pores, small grains, and relative high crush load.

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“…[3][4][5] For the purpose of tritium breeding in fusion reactor, Smith D L of Argonne National Laboratory 6 concluded some requirements of solid breeding materials for the fusion reactor. The suggested temperature range in fusion reactor for monoclinic lithium orthosilicate is 320 • C to 950 • C. The minimum temperature depends on the tritium inventory and residency time, 7 and the higher the minimum temperature, the shorter the tritium residency time. The triclinic Li 4 SiO 4 has properties required by a candidate material for tritium breeding similar to the monoclinic structure Li 4 SiO 4 .…”

Section: Introductionmentioning

confidence: 99%

First-principles study of electronic, dynamical and thermodynamic properties of γ-Li₄SiO₄

Guan

Gao

Shen

et al. 2015

Int. J. Mod. Phys. B

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We have studied the structural, electronic and dynamic properties of γ-Li 4 SiO 4 (lithium orthosilicate) using density functional theory (DFT) with the generalized gradient approximation (GGA). The crystal structure is fully relaxed. The electronic band structure and Density of States (DOS) calculations indicate that γ-Li 4 SiO 4 is an insulator with an indirect band gap of 5.19 eV and it has a conduction band with the width of 5.92 eV and two valance bands with the width of 4.45 eV and 0.57 eV, respectively. In the partial DOS, Li and Si electronic densities increase more sharply than O atoms. Comparing with previous works, the phonon dispersion curves without negative frequencies are calculated along high symmetry points. By adding the Born effective charges in the phonon calculation, the LO-TO splittings are also calculated which indicate that γ-Li 4 SiO 4 is polar and anisotropic. The optical modes of phonon frequencies at Γ point are assigned as Raman and Infrared-active modes. Additionally, the thermodynamic functions (entropy, internal energy, Helmholtz free energies and constant-volume specific heats) were determined by using the phonon DOS. The calculated results may provide useful guidance of γ-Li 4 SiO 4 for future experimental studies in some degree. , 65.40.-b, 71.20.-b 1550128-1 Int. J. Mod. Phys. B 2015.29. Downloaded from www.worldscientific.com by UNIVERSITY OF CALIFORNIA @ SAN DIEGO on 08/19/15. For personal use only.

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ITER solid breeder blanket materials database

Abstract: Atomic fraction of tritium (XT) and hydrogen _Y"_,.,r_,, dissolved in Li20 crystals at 876 K as a function of the equilibrium pressure of carrier-free "I"2and HT-H2 mixed gas, respectively: (o) single crystal and (•) crystalline powder .

Cited by 30 publications

References 1 publication

Ceramic breeder materials: Status and needs

Ceramic breeder materials: Status and needs

Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder

First-principles study of electronic, dynamical and thermodynamic properties of γ-Li₄SiO₄

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ITER solid breeder blanket materials database

Abstract: Atomic fraction of tritium (XT) and hydrogen _Y"_,.,r_,, dissolved in Li20 crystals at 876 K as a function of the equilibrium pressure of carrier-free "I"2and HT-H2 mixed gas, respectively: (o) single crystal and (•) crystalline powder .

Cited by 30 publications

References 1 publication

Ceramic breeder materials: Status and needs

Ceramic breeder materials: Status and needs

Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder

First-principles study of electronic, dynamical and thermodynamic properties of γ-Li4SiO4

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Product

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First-principles study of electronic, dynamical and thermodynamic properties of γ-Li₄SiO₄