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2010•Kikai Zairyou, Zairyou Kakou Gijutsu Kouenkai kouen rombunshuu/Kikai Zairyo, Zairyo Kako Gijutsu Koenkai koen ronbunshuOpen access

102 Fabrication of Non-oxide Nanoceramics by Spark Plasma Sintering

Toshiyuki Nishimura, Naoto Hirosaki

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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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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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Available 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.

Key concepts: Spark plasma sintering, Sintering, Nanoceramic, Materials science, Ceramic, Fabrication, Nitride, Oxide

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