Development of Al-CNT with high strength and electrical conductivity by using low oxygen powder metallurgy process

采用低氧粉末冶金工艺开发高强高导电Al-CNT

• 批准号: 22KJ1590
• 负责人: KIM Dasom
• 金额: $ 0.9万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ1590/
• 关键词: Carbon nanotube; Powder metallurgy; Al nanopower; Oxide-less interface; Al4C3

Al-carbon nanotube(CNT) composites with high mechanical and electrical properties were fabricated by solving (1) Exquisite interfacial control and (2) uniform dispersion of CNTs in Al matrix using low oxygen powder metallurgy process. By using bare Al nanopowder, first, the agglomeration of CNTs was improved and the dispersibility of CNTs was enhanced within the Al matrix. Second, oxide-less Al/Al and Al/CNT interfaces were prepared. oxide-less Al/Al interfaces contributed to preserving the electrical conductivity of Al. On the other hand, very fine Al4C3 were formed at Al/CNT interfaces with oxide-less layer by heat-treatment at much lower temperature. The uniformly dispersed fine Al4C3 particles enhanced the strength of the Al-CNTs composites without degrade of electrical conductivity of Al.

采用低氧粉末冶金工艺，通过解决（1）精致的界面控制和（2）CNT在Al基体中均匀分散的问题，制备了具有高机械和电性能的Al-碳纳米管（CNT）复合材料。通过使用裸铝纳米粉，首先，改善了碳纳米管的团聚，增强了碳纳米管在铝基体中的分散性。其次，制备了无氧化物的Al/Al和Al/CNT界面。无氧化物的 Al/Al 界面有助于保持 Al 的导电性。另一方面，通过在低得多的温度下进行热处理，在Al/CNT界面处形成了非常细小的Al4C3，且无氧化层。均匀分散的细Al4C3颗粒增强了Al-CNT复合材料的强度，同时又不降低Al的导电性。

项目成果

Enhancement of the hardness for CNT/Al composite by well-dispersed nano sized Al4C3 particles prepared using bare Al nanopowder

利用裸铝纳米粉制备的分散良好的纳米尺寸 Al4C3 颗粒提高 CNT/Al 复合材料的硬度

• 发表时间: 2022
• 作者: Dasom Kim; Yusuke Hirayama; Zheng Liu; Kenta Takaigi; Hansang Kwon; Makoto Kobashi
• 通讯作者: Makoto Kobashi

Fabrication of Al-CNT composite with high hardness and electrical conductivity by controlling Al4C3 formation

控制Al4C3形成制备高硬度高导电性Al-CNT复合材料

• DOI: 10.1016/j.jallcom.2023.169102
• 发表时间: 2023-05-01
• 期刊: Journal of Alloys and Compounds
• 影响因子: 6.2
• 作者: Dasom Kim;Y. Hirayama;Zheng Liu;K. Takagi;M. Kobashi
• 通讯作者: M. Kobashi