Sol–gel followed by urea–acetone spherodization for preparation of lithium titanate ceramics pebbles and preliminary characterization

Sinha, S.K.; Yadav, Shlok; Raole, P.M.

doi:10.1016/j.fusengdes.2016.10.018

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…The indirect wet method used to add the binder to the Li 2 TiO 3 powder, and then drop the mixed liquid into liquid nitrogen or extremely cold organic solvents. The surface tension of the droplet is used to form a sphere, and the ceramic pebbles are obtained after drying and sintering [5,[19][20][21]. TSUCHIYA et al used polyvinyl alcohol as the binder, mixed ceramic powder and binder evenly and then dropped it into the extremely cold acetone cold bath.…”

Section: Introductionmentioning

confidence: 99%

Preparation of High Sphericity Li2TiO3 Tritium Breeder by Polymer Assisted Sedimentation Method

Chen¹,

Lu²,

Chu³

et al. 2019

MSF

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The tritium breeder materials used in solid tritium breeding blanket of fusion reactor are lithium-based ceramics, like lithium titanate (Li2TiO3), lithium orthosilicate (Li4SiO4), lithium aluminate（LiA1O2) and lithium zirconate (Li8ZrO6). Among them, Li2TiO3 has the advantages of stable chemical property, high mechanical strength and high lithium content, so it has become one of the preferred materials. Based on the design of solid blanket and tritium extraction process, breeder materials need to be made into a certain shape of pebbles. B Spherical breeder is widely used in the design of fusion reactor for the larger specific surface area, more channels between the pebbles to diffuse and release tritium, and easier loading or unloading. However, due to the high requirements of the breeder pebbles, the production control are not complete. In this paper, a new preparation method of ceramic pellets with high sphericity, polymer assisted sedimentation method, was used to prepare ceramic pebbles. The slurry consists of micro-scaled ceramic powder and organic monomers. Spherical droplets of ceramic slurry were obtained by sedimentation method in viscous liquids. The organic monomer contained in the droplets was heated to polymerize into small pellet preforms during the sedimentation process. By optimizing the sintering process, the fabricated pebbles could perform high compressive load (>18 N), spherical shape (0.95~1.02), uniform particle size (0.8~1.2mm) and porosity (15~20 %). The main advantages of this method is the mild preparation conditions (50~110 °C), the simplified transfer and purification process and convenient industrialization.. The obtained product has high spherical shape, uniform particle size, high compactness and mechanical strength.

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Section: Introductionmentioning

confidence: 99%

Preparation of High Sphericity Li2TiO3 Tritium Breeder by Polymer Assisted Sedimentation Method

Chen¹,

Lu²,

Chu³

et al. 2019

MSF

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Dielectric and piezoelectric properties of PbTi 0.8−xSe0.2SmxO3 nanoceramics prepared by high energy ball milling

2019

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Studies of dielectric and piezoelectric properties of PbTi0.8−x Te0.2Gd_xO₃ nano ceramics prepared by high energy ball milling

2019

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Incorporation of Te and Gd were done based on the stoicheometric formula PbTi[Formula: see text] Te[Formula: see text]GdxO3 (PTTeG). TG characterization of green powder revealed the completion of solid state reaction at temperature 450∘ C. XRD of modified PTTeG powders milled for 10[Formula: see text]h was found most suitable as it gives pure single-phase tetragonal structure. Dielectric constant was found as 2543 at curie temperature of 480∘C in the case of 5[Formula: see text]wt.% of Gd in PTTeG. Piezoelectric Coefficient was found as 241 [Formula: see text] 10 [Formula: see text] C/N at 39[Formula: see text]Kv/cm of poling field. The results obtained were comparable and even better than so far reported in similar kind of materials.

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Sol–gel followed by urea–acetone spherodization for preparation of lithium titanate ceramics pebbles and preliminary characterization

Cited by 4 publications

References 22 publications

Preparation of High Sphericity Li<sub>2</sub>TiO<sub>3</sub> Tritium Breeder by Polymer Assisted Sedimentation Method

Preparation of High Sphericity Li<sub>2</sub>TiO<sub>3</sub> Tritium Breeder by Polymer Assisted Sedimentation Method

Dielectric and piezoelectric properties of PbTi 0.8−xSe0.2SmxO3 nanoceramics prepared by high energy ball milling

Studies of dielectric and piezoelectric properties of PbTi0.8−x Te0.2Gd_xO₃ nano ceramics prepared by high energy ball milling

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Sol–gel followed by urea–acetone spherodization for preparation of lithium titanate ceramics pebbles and preliminary characterization

Cited by 4 publications

References 22 publications

Preparation of High Sphericity Li<sub>2</sub>TiO<sub>3</sub> Tritium Breeder by Polymer Assisted Sedimentation Method

Preparation of High Sphericity Li<sub>2</sub>TiO<sub>3</sub> Tritium Breeder by Polymer Assisted Sedimentation Method

Dielectric and piezoelectric properties of PbTi 0.8−xSe0.2SmxO3 nanoceramics prepared by high energy ball milling

Studies of dielectric and piezoelectric properties of PbTi0.8−x Te0.2GdxO3 nano ceramics prepared by high energy ball milling

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Studies of dielectric and piezoelectric properties of PbTi0.8−x Te0.2Gd_xO₃ nano ceramics prepared by high energy ball milling