Unraveling the dispersion mechanism of carbon nanotubes in aluminum powder particles during high energy ball milling by FIB-TEM study
Unraveling the dispersion mechanism of carbon nanotubes in aluminum powder particles during high energy ball milling by FIB-TEM study
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通过 FIB-TEM 研究揭示高能球磨过程中碳纳米管在铝粉颗粒中的分散机制
DOI：
10.1016/j.powtec.2023.118339
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发表时间：
2023-02
影响因子：
5.2
通讯作者：
Li J.S.
中科院分区：
文献类型：
--
作者：
Cao L.;Chen B.;Wan J.;Shen J.H.;Liu S.;Li J.S.
为了开发碳纳米管（CNT）增强的高性能铝（Al）基复合材料，高能球磨（HEBM）是将CNT分散在Al粉末中的最常用方法。然而，碳纳米管在铝粉中的分散机制仍不清楚，主要是因为当碳纳米管埋在铝粉颗粒内部时，很难对其进行表征。在此，通过不同研磨时间的高能球磨机对铝粉中的碳纳米管进行聚焦离子束辅助透射电子显微镜观察。结果表明，随着HEBM时间的增加，碳纳米管簇首先被破碎，形成较短长度的碳纳米管分散在铝片表面，且厚度逐渐减小。此后，铝片的冷焊接是主要现象，导致铝粉重新球化和均匀分散的碳纳米管。这项研究可以为控制和优化将碳纳米管分散在铝基体中的高能球磨工艺提供指导，以开发高性能碳纳米管/铝复合材料。
For the development of high-performance aluminum (Al) matrix composites reinforced with carbon nanotubes (CNTs), high energy ball milling (HEBM) is the most prevalent method to disperse CNTs in Al powder. However, the dispersion mechanism of CNTs in Al powder is still unclear, mainly because it is difficult to characterize CNTs when they are buried inside Al powder particles. Herein, focused-ion-beam-assisted transmission electron microscopy observation of CNTs in Al powder via HEBM with various milling times was conducted. Results showed that with increasing HEBM time, CNTs clusters were firstly broken up to be dispersed shorter-lengthed CNTs on the surface of Al flakes with gradually reduced thickness. Afterward, cold-welding of Al flakes was the predominant phenomenon, which resulted in re-spheroidization of Al powders and homogeneously dispersed CNTs. This study may provide guidance for controlling and optimizing the HEBM process to disperse CNTs in Al matrix towards the development of high-performance CNTs/Al composites.
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影响因子：
9.4
作者：
Chen, B.;Shen, J.;Kondoh, K.
通讯作者：
Kondoh, K.
通过变速球磨片状粉末冶金实现 CNT/Al 复合材料的平衡强度和延展性
DOI：
10.1016/j.compositesa.2017.02.017
发表时间：
2017-05
影响因子：
8.7
作者：
Xu Run;Tan Zhanqiu;Xiong Dingbang;Fan Genlian;Guo Qiang;Zhang Jie;Su Yishi;Li Zhiqiang;Zhang Di
通讯作者：
Zhang Di
DOI：
10.1080/10408436.2014.929521
发表时间：
2015-01
影响因子：
10.8
作者：
K. Munir;P. Kingshott;C. Wen
通讯作者：
K. Munir;P. Kingshott;C. Wen
DOI：
10.1134/s0036029519010063
发表时间：
2019
期刊：
Russian Metallurgy (Metally)
影响因子：
--
作者：
V. Gusev;A. V. Sobol’kov;A. Aborkin;M. Alymov
通讯作者：
V. Gusev;A. V. Sobol’kov;A. Aborkin;M. Alymov
影响因子：
6.2
作者：
Hassan, Mohamed T. Z.;Esawi, Amal M. K.;Metwalli, Sayed
通讯作者：
Metwalli, Sayed