石墨/铜复合材料出气性能研究*

doi:10.13385/j.cnki.vacuum.2025.05.03

真空 ›› 2025, Vol. 62 ›› Issue (5): 17-22.doi: 10.13385/j.cnki.vacuum.2025.05.03

石墨/铜复合材料出气性能研究^*

谭彪^1,2, 余洁冰^1,2,3, 王鹏程^1,2,4, 李艳敏⁵, 刘佳明^1,2, 刘顺明^1,2, 关玉慧^1,2, 孙晓阳^1,2, 王一刚^1,2, 朱邦乐^1,2

1.中国科学院高能物理研究所,北京 100049;
2.散裂中子源科学中心,广东东莞 523803;
3.中国科学院大学,北京 100049;
4.中国科学技术大学,安徽合肥 230029;
5.北京安泰钢研超硬材料制品有限责任公司,北京 102200

收稿日期:2024-12-25 发布日期:2025-09-29
通讯作者: 余结冰,高级工程师。
作者简介:谭彪（1990-）男,湖南邵阳人,工程师,硕士。
基金资助:
*国家自然科学基金（12105296）; 广东省极端条件重点实验室（2023B1212010002）

Study on the Outgassing Performance of Graphite/Copper Composite

TAN Biao^1,2, YU Jiebing^1,2,3, WANG Pengcheng^1,2,4, LI Yanmin⁵, LIU Jiaming^1,2, LIU Shunming^1,2, GUAN Yuhui^1,2, SUN Xiaoyang^1,2, WANG Yigang^1,2, ZHU Bangle^1,2

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2. Spallation Neutron Source Science Center, Dongguan 523808, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. University of Science and Technology of China, Hefei 230029, China;
5. Beijng Gangyan Diamond Products Company Carbide Branch, Beijing 102200, China

Received:2024-12-25 Published:2025-09-29

摘要/Abstract

摘要： 为拓展石墨/铜复合材料在加速器领域的应用,采用粉末冶金技术制备得到不同掺杂成分的石墨/铜复合材料,研究了石墨含量及掺杂元素对复合材料致密度和真空出气率的影响,通过对比不同石墨/铜复合材料的出气率特性,评估了其在束流准直器中应用的可能性。结果表明：无掺杂石墨/铜和镍包鳞片石墨/铜复合材料的致密度相对更高,均达到95%以上,其他掺杂复合材料出现随石墨含量增加而致密度下降的趋势;石墨含量为30%的镍包鳞片石墨/铜复合材料具有最低出气率,烘烤除气可以有效降低复合材料出气率;采用合理的制备工艺配合严格的烘烤流程控制出气率,使得石墨/铜复合材料具备作为准直器材料应用于中国散裂中子源加速器系统的可能。

关键词: 石墨/铜复合材料, 出气率, 残余气体分析, 致密度

Abstract: To expand the application of graphite/copper composites in accelerators, powder metallurgy technology was used to prepare different doped graphite/copper composites. The effects of graphite content and doping elements on the relative density and outgassing rate of the composites were studied. The possibility of their application in beam collimators was evaluated. The results show that the relative density of undoped graphite/copper and nickel-coated flake graphite/copper composites is higher than 95%, while the relative density of other doped composites decreases with the increase of graphite content. The nickel-coated flake graphite/copper composites with graphite content of 30% show the lowest outgassing rate. A bake-out procedure can effectively reduce the degassing rate of composite materials. By combining an optimised fabrication route with a stringent bake-out protocol, the outgassing rate can be suppressed sufficiently to qualify Gr/Cu composites as collimator materials for the China Spallation Neutron Source accelerator.

Key words: graphite/copper composite, outgassing rate, residual gas analysis, relative density

中图分类号: TB79;TB741

谭彪, 余洁冰, 王鹏程, 李艳敏, 刘佳明, 刘顺明, 关玉慧, 孙晓阳, 王一刚, 朱邦乐. 石墨/铜复合材料出气性能研究^*[J]. 真空, 2025, 62(5): 17-22.

TAN Biao, YU Jiebing, WANG Pengcheng, LI Yanmin, LIU Jiaming, LIU Shunming, GUAN Yuhui, SUN Xiaoyang, WANG Yigang, ZHU Bangle. Study on the Outgassing Performance of Graphite/Copper Composite[J]. VACUUM, 2025, 62(5): 17-22.

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石墨/铜复合材料出气性能研究^*

Study on the Outgassing Performance of Graphite/Copper Composite

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