Investigation of wetting property between liquid lead lithium alloy and several structural materials for Chinese DEMO reactor

Lu, Weidong; Jiang, Haiyan; Zuo, Guizhong; Pan, Baoguo; Xu, Wei; Chu, Delin; Hu, Jiansheng; Qi, Junli

doi:10.1016/j.jnucmat.2017.07.055

Cited by 6 publications

(1 citation statement)

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“…The fusion reactor uses the lithium contained materials in the blanket and the fusion neutron reaction in the reactor core to accomplish tritium breeding [1]. The solid breeder has the advantages of high chemical stability, good safety and no magneto-hydrodynamic effect.…”

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%