氚增殖剂Li<SUB>4</SUB>SiO<SUB>4</SUB> 陶瓷小球的制备工艺

尹邦跃; 牛恺

doi:10.7538/yzk.2011.45.01.0073

氚增殖剂Li₄SiO₄ 陶瓷小球的制备工艺

尹邦跃,
牛恺

中国原子能科学研究院反应堆工程研究设计所,北京 102413

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出版历程
- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 刊出日期: 2011-01-19

Preparation Process of Li₄SiO₄ Pebbles as Tritium Breeding Materials

China Institute of Atomic Energy, P. O. Box 275-51, Beijing 102413, China

摘要

摘要: 欧洲和中国聚变堆固态产氚包层（TBM）的氚增殖剂倾向于采用直径0.5～2 mm的Li₄SiO₄陶瓷小球填充床。本工作探讨锂陶瓷小球的性能指标设计，研究挤压-滚圆、烧结法制备Li₄SiO₄小球的工艺可行性，测试分析小球的密度、直径、球形度、晶粒尺寸、压碎载荷等性能。研究表明：挤压-滚圆成型、1 050 ℃无压烧结的Li₄SiO₄陶瓷小球密度为90.4%TD，堆积密度为52.9%TD；平均直径为0.95 mm，标准偏差为0.15 mm；球形度为1.10；平均压碎载荷为18.50 N，标准偏差为2.76 N；平均晶粒尺寸为14 μm；相结构由Li₄SiO₄主晶相、少量Li₂SiO₃和Li₂Si₂O₅等组成。采用优化的挤压滚圆、烧结工艺可制备出合格的Li₄SiO₄陶瓷小球产品。
- Li₄SiO₄ ,
- 小球 ,
- 挤压-滚圆 ,
- 成型 ,
- 烧结
Abstract: Li4SiO4 with a diameter of 0.52 mm has been candidated as solidstate tritium breeder material for the testing blanket module (TBM) of fusion reactor being developed in Europe and China. Performance designs of Li ceramics pebbles were discussed, extrusion-spheronisation-sintering process of Li₄SiO₄ pebbles were studied, and density, diameter, sphericity, grain size and crush load of pebbles were analyzed and characterized. Li₄SiO₄ pebbles sintered at 1 050 ℃ have a density of 90.4%TD, pebbled bed density 52.9%TD, diameter (0.95±0.15) mm, sphericity 1.10, crush load (18.50±2.76) N, average grain size 14 μm, phase structures of Li₄SiO₄(main), Li₂SiO₃ and Li₂Si₂O₅. Products of Li₄SiO₄ pebbles can be fabricated by the improved extrusion-spheronisation and sintering processes.
- Li₄SiO₄ ,
- pebble ,
- extrusion-spheronisation ,
- forming ,
- sintering

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参考文献(25)

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文章访问数: 503
HTML全文浏览量: 2
PDF下载量: 1373
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氚增殖剂Li4SiO4 陶瓷小球的制备工艺

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出版历程

Preparation Process of Li4SiO4 Pebbles as Tritium Breeding Materials

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出版历程

目录

氚增殖剂Li₄SiO₄ 陶瓷小球的制备工艺

Preparation Process of Li₄SiO₄ Pebbles as Tritium Breeding Materials