Results 141 to 150 of about 313 (182)

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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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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Molecular dynamics simulation of Li4SiO4 melt and glass

Journal of Non-Crystalline Solids, 1987
Molecular dynamics simulation has been carried out on Li4SiO4 melt and glass. The computer-generated structures of Li4SiO4 melt and glass seemed to be realistic in comparison with our Raman and X-ray diffraction data. The simulated correlation functions were in satisfactory agreement with the one obtained from the X-ray diffraction analysis ...
Nobuya Iwamoto, Norimasa Umesaki, Masanari Takahashi, Masahiro Tatsumisago, Tsutomu Minami, Yoshihito Matsui   +5 more
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Feasibility of Li4SiO4 pebbles by drip casting and preliminary characterization

Fusion Engineering and Design, 2020
Abstract Open issues for fusion reactor technology are related to the breeder material to be used for the nuclear fusion reaction. Despite in the last decades several studies were carried out, the selection, characterization and reliability of breeder material are still open issues.
Lo Frano R., Stefanelli E., Puccini M.
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Effects of Sn substitution on the properties of Li4SiO4 ceramic electrolyte

Solid State Ionics, 2014
Abstract The aim of this work is to investigate the effects of Sn doping on the structural, thermal, electrical and electrochemical properties of Li4SiO4 synthesized by a sol gel method. The formation of the compound is confirmed by XRD study. Thermal properties of the compounds are measured using DSC analysis while the electrical characteristics are
S.B.R.S. Adnan, N.S. Mohamed
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Raman spectra of rapidly quenched Li4SiO4Li2WO4 glasses

Journal of Non-Crystalline Solids, 1989
Abstract Glasses were prepared in the pseudobinary system Li4SiO4Li2WO4 by a rapid quenching technique. The Raman spectra showed that not only monomer SiO44− and WO42− ions but also condensed structural units such as Si2O76− and WO6 groups were present in these glasses over the whole glass-forming region of 0–90 mol% Li2WO4. The condensed structurel
Masanari Takahashi, Hiroshi Toyuki, Masahiro Tatsumisago, Tsutomu Minami   +3 more
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