| 梯度复合B4C/Cu面向等离子体材料的制备与表征 |
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| 引用本文： | 凌云汉,李江涛,葛昌纯. 梯度复合B4C/Cu面向等离子体材料的制备与表征[J]. 无机材料学报, 2001, 16(6): 1121-1127 |
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| 作者姓名： | 凌云汉 李江涛 葛昌纯 |
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| 作者单位： | 北京科技大学特陶中心，北京100083 |
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| 基金项目： | 863资助项目(715-011-0230) |
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| 摘 要： | 基于B4C和Cu材料具有明显电阻率及熔点差的特点，提出了在超高压下通电快速烧结B4C／Cu梯度复合材料的新工艺。在2－4GPa,12kW,40s及适当的热处理条件下成功制备出了成分分布从0－100％的接近理论密度的B4C／Cu层状复合材料；显微观察显示材料的成分和结构是呈梯度分布的。化学溅射实验表明其产额比SMF800核纯级石墨降低70％；在Tokamak原位等离子体辐照下，材料表面无明显损伤。
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| 关 键 词： | 功能梯度材料 复合材料 面向等离子体材料 碳化硼 铜 烧结 制备 表征 B4C／Cu |
| 文章编号： | 1000-324(2001)06-1121-07 |
| 收稿时间： | 2000-11-27 |
| 修稿时间： | 2000-11-27 |
Processing and Characterization of Graded B4 C/Cu Facing Plasma Composite |
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| LING Yun-Han,LI Jiang-Tao,GE Chang-Chun. Processing and Characterization of Graded B4 C/Cu Facing Plasma Composite[J]. Journal of Inorganic Materials, 2001, 16(6): 1121-1127 |
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| Authors: | LING Yun-Han LI Jiang-Tao GE Chang-Chun |
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| Affiliation: | LaboratoryofSpecialCeramics&PowderMetallurgy;UniversityofScience&TechnologyBeijing;Beijing100083;China |
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| Abstract: | Based on their distinct resistivity and melting point, a new approach for fabricating graded B4C/Cu composite by rapid self-resistance sintering under ultra-high pressure was proposed in this paper and with which a near dense plasma facing material with 0-100% compositional distributions of B4C was obtained on conditions of 12kW electric power input, 2-4GPa pressure applied, 40s duration and properly consecutive heat treatment. Well-graded composition and structure of that composite were demonstrated by SEM analysis. Tests on plasma relevant performances show that the chemical sputtering yield of B4C/Cu graded composite is 70% lower than that of SMF 800 nuclear graphite, and the surface of the composite is almost no damages after in-situ plasma irradiation in Tokamak apparatus. |
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| Keywords: | functionally graded material composite plasma facing material boron carbide copper sintering |
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