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Effect of Short Copper-Coated Carbon Fibers on Stabilization of Al Foams Made by Powder Metallurgy Route

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Short copper-coated carbon fibers (Cf) contained the content of 0.7 vol.% were dispersed uniformly into foamable precursors. The scanner at the resolution of 600 dpi, SEM, and EDX were used to investigate macro and microstructures of foamed samples. Stabilization mechanism for addition of short Cf was explained by the drainage model for liquid metal foams. The results show foams stability are improved due to short Cf. Element Cu is distributed homogeneously and CuAl2 phase are not observed. The rate of cell wall thinning and is reduced effectively due to increase of the melt viscosity of Al with short Cf. Short Cf are a good ex situ stabilizer for PM foams.
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Document Type: Short Communication

Publication date: September 1, 2017

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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