Abstract

Aluminum nitride nanopowder was fabricated from transition alumina nanopowder by gas reduction-nitridation method. It was sintered by spark plasma sintering with 1 wt% Ca_3Al_2O_6 as a sintering additive in nitrogen. A so-called nanoceramic was obtained by sintering at 1450℃ with Ca_3Al_2O6_, though the nanopowder without additive was densified at 1550℃. The sintering temperature for dense aluminum nitride ceramic could be reduced by 1 wt% Ca_3Al_2O_6 as a sintering additive.

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