| Li4TixSi1-xO4氚增殖陶瓷制备及力学性能 |
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| 引用本文： | 杨茂,赵林杰,肖成建,龚宇,陈晓军,王和义,彭述明. Li4TixSi1-xO4氚增殖陶瓷制备及力学性能[J]. 核化学与放射化学, 2021, 43(3): 223-230. DOI: 10.7538/hhx.2021.43.03.0223 |
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| 作者姓名： | 杨茂 赵林杰 肖成建 龚宇 陈晓军 王和义 彭述明 |
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| 作者单位： | 中国工程物理研究院 核物理与化学研究所,四川 绵阳 621900 |
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| 基金项目： | 政府间国际科技创新合作专项 |
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| 摘 要： | 正硅酸锂材料锂密度高、释氚性能好,是国际热核聚变实验堆(ITER)主要的候选氚增殖剂材料.通过异质元素掺杂,形成固溶体结构,可提高陶瓷抗压强度.本研究采用固相法合成陶瓷粉体,通过熔融喷雾工艺制备获得密度高、球形度好的Li4 Tix Si1-x O4固溶体陶瓷小球.Ti原子固溶可以改善陶瓷微观结构,提升力学性能.研究结果...
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| 关 键 词： | 氚增殖剂 Li4SiO4 抗压强度 固溶体 |
Fabrication and Mechanical Property of Li4TixSi1-xO4 Ceramic Tritium Breeders |
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| YANG Mao,ZHAO Lin-jie,XIAO Cheng-jian,GONG Yu,CHEN Xiao-jun,WANG He-yi,PENG Shu-ming. Fabrication and Mechanical Property of Li4TixSi1-xO4 Ceramic Tritium Breeders[J]. Journal of Nuclear and Radiochemistry, 2021, 43(3): 223-230. DOI: 10.7538/hhx.2021.43.03.0223 |
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| Authors: | YANG Mao ZHAO Lin-jie XIAO Cheng-jian GONG Yu CHEN Xiao-jun WANG He-yi PENG Shu-ming |
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| Affiliation: | Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | Lithium orthosilicate(Li4SiO4) is considered as the promising ceramic tritium breeder materials for the International Thermonuclear Experimental Reactor(ITER) due to its high lithium density and good tritium release property. The mechanical property of the ceramic breeder material will be improved by hetero-element doping and forming solid solution. In this study, Li4TixSi1-xO4 pebbles with high density and good sphericity were fabricated by melt spraying method with the powders synthesized by solid state reaction. The microstructure of the pebbles was improved by doping Ti, thus increasing the crush load. The results indicate that the crush load of Li4SiO4 pebbles is decreased with the increasing of temperatures, the crush load is only 10.2 N for the pebble annealed 2 h at 800 ℃. Compared to Li4SiO4 pebbles, the mechanical property of Li4Ti0.1Si0.9O4 is significantly improved, and the crush load is as high as 26.2 N annealed 2 h at 800 ℃. Besides, the Li4Ti0.1Si0.9O4 pebbles also show considerable stability. |
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| Keywords: | tritium breeder Li4SiO4 crush load solid solution |
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