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，通过解决碳纳米管（CNT）在铝基体中的均匀分散和良好的界面控制，制备出了具有高力学性能和电学性能的Al/CNT复合材料。通过使用裸Al纳米粉，首先，改善了CNT的团聚，增强了CNT在Al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热处理，在具有无氧化物层的Al/CNT界面处形成了非常细的Al 4C 3。均匀分散的Al 4C 3微粒在不降低Al导电性能的前提下，提高了Al-CNTs复合材料的强度。

项目成果

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

• DOI: 10.1016/j.jallcom.2023.169102
• 发表时间: 2023-02-01
• 期刊: JOURNAL OF ALLOYS AND COMPOUNDS
• 影响因子: 6.2
• 作者: Kim，Dasom;Hirayama，Yusuke;Kobashi，Makoto
• 通讯作者: Kobashi，Makoto

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