Results 171 to 180 of about 674 (212)

Measurements of the effective thermal conductivity of a bed of Li4SiO4 pebbles of 0.35–0.6 mm diameter and of a mixed bed of Li4SiO4 and alu

Journal of Nuclear Materials, 1992
The Karlsruhe ceramic breeder reference design for a Demo relevant blanket is based on a concept where the breeder material is in form of a bed of a mixture of Li 4 SiO 4 pebbles in the diameter range 0.35–0.6 mm. The heat transfer parameters of this bed have been measured in an especially developed experimental apparatus.
M. Dalle Donne, A. Goraieb, G. Sordon
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Synthesis and electrochemical properties of Li2S–B2S3–Li4SiO4

Solid State Ionics, 2006
Abstract New Li + ion-conductive glasses Li 2 S–B 2 S 3 –Li 4 SiO 4 were synthesized by rapid quenching, and they were transformed into glass ceramics by heat treatment. The heat treatment increased the ionic conductivities of the Li 4 SiO 4 -doped glasses, and the highest ionic conductivity observed in the system was 1.0 × 10 − 3 S cm − 1 at ...
Y SEINO, K TAKADA, B KIM, L ZHANG, N OHTA, H WADA, M OSADA, T SASAKI   +7 more
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Semi-industrial production of li4sio4 powder and spheres

Fusion Engineering and Design, 1989
This report deals with the preparation of a 70 kg batch of lithium orthosilicate. For synthesis, a technique has been selected under which the LiOH and SiO2 starting materials form a preliminary product in methanol. The resulting suspension is spray-dried after water has been substituted for alcohol.
D. Vollath, H. Wedemeyer, E. Günther, H. Elbel   +3 more
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Studies on Li2SO4-MgSO4 and Li2SO4-Li4SiO4 systems

Acta Chimica Sinica, 1986
The phase equilibria as well as the properties and crystal structures of the compounds formed in both Li2SO4-MgSO4 and Li2SO4-Li4SiO4 systems have been studied by means of x-ray diffraction technique (at high and room temperatures) as well as by the thermal analyses (DTA, DSC, TGA, etc.). In Li2SO4-MgSO4 system there exists a compound Mg4Li2(SO4)
Liang Jing-Kui, Zhang Yu-Ming
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Ionic conductivity of oxides based on Li4SiO4

Journal of Applied Electrochemistry, 1973
Lithium orthosilicate, Li4SiO4, and its solid solutions are a new group of solids of high ionic conductivity. Either Li or Si may be at least partially replaced by several other di-, tri- or tetra-valent cations. Highest conductivities were found for solid solutions with Si partially replaced by Ti; typical values were 10−3 to 10−4 Ω−1 cm−1 at 300°C ...
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Effect of sweep gas chemistry on vaporization of Li4SiO4

Journal of Nuclear Materials, 1995
Abstract Gas/solid equilibria in the system Li 4 SiO 4 D 2 D 2 O were studied by means of Knudsen effusion mass spectrometry. A Knudsen effusion mass spectrometer was modified to enable studies of reactions of hydrogen and/or water vapor with ceramic breeder materials.
Michio Yamawaki, Atsushi Suzuki, Masaru Yasumoto, Kenji Yamaguchi   +3 more
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MECHANICAL PROPERTIES AND DEHYDRATION OF Li4SiO4 PEBBLES

1993
A new concept of the Karlsruhe helium cooled ceramic breeder design is based on a mixed bed of small lithium orthosilicate pebbles of 0.1 - 0.2 mm diameter and 2 mm beryllium pebbles that serve as a neutron multiplier. Helium sweep gas flows through the bed and carries away the released tritium.
V. Schauer, M. Dalle Donne, R. Huber, B. Schmitt, G. Schumacher, H. Werle   +5 more
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Partial nitridation of Li4SiO4 and ionic conductivity of Li4.1SiO3.9N0.1

Ceramics International, 2018
Abstract The Li content and anion lattice of Li 4 SiO 4 were modified to improve ionic conductivity. Li 2 CO 3 and Si 3 N 4 were mixed in a ratio of Li/Si = 4.5 and heated in NH 3 at 820 °C, which resulted in the formation of the oxynitride, Li 4.1 SiO 3.9 N 0.1 . Powder X-ray diffraction analyses revealed Li 4.1 SiO 3.9 N 0.1 and Li 4 SiO 4 to
Hanseul Kim, Young-Il Kim
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Li+ ion conductivity in the system Li4SiO4Li3VO4

Journal of Solid State Chemistry, 1984
Abstract Two ranges of solid solutions were prepared in the system Li 4 SiO 4 Li 3 VO 4 : Li 4− x Si 1− x V x O 4 , 0 x ≲ 0.37 with the Li 4 SiO 4 structure and Li 3+ y V 1− y Si y O 4 , 0.18 ≲ y ≲ 0.53 with a γ structure. The conductivity of both solid solutions is much higher than that of the end members and passes through a maximum at ∼
A. Khorassani, A.R. West
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Chemical synthesis and characterization of lithium orthosilicate (Li4SiO4)

Materials & Design, 2001
Abstract A solution based wet chemistry approach has been developed for synthesizing Li4SiO4 powders at moderate temperatures of 500°C. LiOH·H2O and LiNO3 have been used as starting materials for synthesizing this material in the present study. The phase evolution behavior, surface area and morphology of the as-prepared and heat treated powders ...
C.-C. Chang, C.C. Wang, P.N. Kumta
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