Chemical stability of carbon nanotubes in the 2024Al matrix |
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| Authors: | Deng Chunfeng Zhang Xuexi Wang Dezun |
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| Affiliation: | School of Material Science and Engineering, Harbin Institute of Technology, P.O. Box 433, Harbin 150001, China |
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| Abstract: | Five volume percent of carbon nanotubes and 2024Al alloy powder were mixed with ball milling method, and then the composite was fabricated at 873 K by hot pressing sintering technique. The microstructure of the composite was investigated using optical microscopy, transmission electron microscopy, and X-ray diffraction. The experimental results showed that carbon nanotubes are reacted and changed into Al4C3. Nano-Al4C3 phases with needle shape are distributed mainly on Al grain boundaries; meanwhile some of them exist within Al grains. The reaction mechanism of carbon nanotubes-Al is discussed. |
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| Keywords: | Carbon nanotubes Al matrix composite Al4C3 Hot pressing |
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