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Processing, characterization, and properties of aluminum–carbon nanotube open-cell foams

Author:
Krommenhoek, M., Shamma, M., Morsi, K.
Source:
Journal of materials science 2017 v.52 no.7 pp. 3927-3935
ISSN:
0022-2461
Subject:
aluminum, ambient temperature, foaming, foams, microstructure, nanotubes
Abstract:
This paper discusses the processing, characterization, and properties of aluminum–carbon nanotube (Al–CNT) open-cell foams. The effect of spark plasma sintering temperature on the developed internal surface macro/microstructure and local mechanical response is discussed. Grain size and amount of oxygen-rich internal scales increased with an increase in sintering temperature. Room temperature spherical indentation tests showed a general decline in load-bearing capacity of the foams with increase in sintering temperature. Cell-wall failure was found to be due to brittle fracture rather than plastic collapse. Analyses of the indentation unloading curves showed Al–CNT foams to be ~16% stiffer than Al foams processed at the same condition.
Agid:
5741080