Journal
MATERIALS & DESIGN
Volume 88, Issue -, Pages 359-365Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.09.017
Keywords
Aluminum foam; Multi-walled carbon nanotubes; Orthogonal test; Compressive property
Categories
Funding
- National Natural Science Foundation of China [51501053, 51475138]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT13060]
- Science and Technology Project of Hebei Province [13211008D]
- 863 Project of China [2013M031002]
- Natural Science Foundation of Hebei Province of China [E2012202017]
Ask authors/readers for more resources
Closed-cell aluminum foams with different contents of multi-walled carbon nanotubes (MWCNTs) were fabricated by using modified melt foaming method. In order to effectively disperse MWCNTs, orthogonal tests were utilized to determine the optimal ball-milling parameters. The existence forms of MWCNTs in aluminum foams and the compressive properties of the foams were investigated. Considered from the dispersion degree and structural changes of MWCNTs, the optimal parameters were obtained, the parameters mainly referred to weight ratio of MWCNTs to aluminum powder, weight ratio of ball to powder, milling rate and milling time, respectively. The results showed that MWCNTs mainly existed in three forms: totally embedded in cell wall, partly embedded in cell wall and totally exposed on cell wall surface, respectively. The reasons were mainly due to the existence of defects and amorphous carbon on the surface of MWCNTs, which promoted the wettability between the aluminum matrix and MWCNTs. In addition, with the MWCNT content increasing, the yield strength, structural stiffness and energy absorption capacity of the foams increased first and then decreased. Meanwhile, under the present conditions the foams with MWCNT content of 0.5% possessed the optimal comprehensive mechanical properties and the reasons were discussed. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available