Dispersion of Multiwalled Carbon Nanotubes into a Diglyme Solution, Electrodeposition of Aluminum-based Composite, and Improvement of Hardness
Dispersion of Multiwalled Carbon Nanotubes into a Diglyme Solution, Electrodeposition of Aluminum-based Composite, and Improvement of Hardness
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多壁碳纳米管在二甘醇二甲醚溶液中的分散、铝基复合材料的电沉积及硬度的提高
DOI：
10.1016/j.jallcom.2019.152585
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发表时间：
2020
影响因子：
6.2
通讯作者：
Kuniaki MURASE
中科院分区：
文献类型：
--
作者：
Zelei ZHANG;Atsushi KITADA;Tianyu CHEN;Kazuhiro FUKAMI;Masahiro SHIMIZU;Susumu ARAI;Zhengjun YAO;Kuniaki MURASE
金属和碳纳米管（CNT）的复合材料由于其比纯材料更好的机械性能而受到关注。采用室温电沉积法在一种相对廉价、安全的有机溶剂二甘醇二甲醚（G2）中制备了多壁碳纳米管（MWCNTs）/铝（Al）复合材料。MWCNT在AlCl 3-G2电沉积浴中的成功分散通过MWCNT的表面改性即酸处理来实现，类似于水浴的情况。扫描电子显微镜图像显示，多壁碳纳米管填充和/或桥接Al颗粒之间的差距，这可以归因于高的维氏硬度（205 ± 14 HV），超过了粉末冶金方法获得的Al-MWCNTs的160 HV。此外，虽然电镀的Al-MWCNT复合材料的维氏硬度已被报道为75 HV，但在本研究中报道了几乎三倍硬的材料。
Composites of metals and carbon nanotubes (CNTs) are of interest due to their better mechanical properties compared to neat materials. Aluminum (Al) composites with multi-walled carbon nanotubes (MWCNTs) have been prepared by room-temperature electrodeposition in a relatively inexpensive and safe organic solvent, i.e. diglyme (G2). Successful dispersion of MWCNTs in an AlCl3–G2 electrodeposition bath was achieved by surface modification i.e. acid treatment of MWCNTs, similar to the case of aqueous baths. Scanning electron microscopy images showed that MWCNTs filled and/or bridged the gap between Al particles, which can be attributed to the high Vickers hardness of 205 ± 14 HV, exceeding 160 HV for Al–MWCNTs obtained by powder metallurgical methods. Additionally, while the Vickers hardness of electroplated Al–MWCNTs composites has been reported to be 75 HV, an almost three times harder material is reported in the present study.