(Al_2OC)_<1-x>(AlN)_x固溶体の合成とスピネル-カーボン系クリンカー作製への応用

概要

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Among solid solutions(Al_2OC)_<1-x>(AlN)_x, x=0-1, it has been found that(Al_2OC)_<0.5>(AlN)_<0.5> x=0.5, is easier to form by a solid state reaction. In this regard, a homogeneous solid solution(Al_2OC)_<0.5>(AlN)_<0.5> was obtained through heating of a compact, including Al_2O_3, Al, AlN and graphite, at 1700℃ for 5 h in Ar atmosphere and rapid cooling down to 1400℃. In comparing with AlN, it showed better hydration resistance. The obtained solid solution starts to react with MgO at 1100℃ in CO atmosphere to form spinel and carbon. Therefore, the spinel-carbon clinker was prepared through heating of MgO-(Al_2OC)_<0.5>(AlN)_<0.5> compact in CO gas at 1500℃ for 5 h. The precipitated carbon in the obtained clinker was amorphous and finely distributed among the spinel phase.
社団法人日本セラミックス協会の論文
2002-01-01