The heat transport in the Al nanopowder is experimentally investigated in this paper. The understanding for thermal behavior of the Al powder is advantageous to the advancement of the processing technologies such as laser cladding, laser sintering, powder metallurgy and its other applications. The powder is wrapped up in the slender tube made of insulating material. One end of the slender tube filled with powder is maintained at temperature 0°C and the other end is kept at 24°C. The temperature histories at two different locations in the slender tube are recorded using thermal couples. The results show that the temperature in the powder composed of nanoparticles descends more quickly than that in bulk material. The increase of pressure on the powders enhances the heat transfer.

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