Mnを添加したMo<SUB>2</SUB>NiB<SUB>2</SUB>型複硼化物系サーメットの焼結挙動

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タイトル別名
  • Sintering Mechanisms of Mn Containing Mo<SUB>2</SUB>NiB<SUB>2</SUB> Boride Base Cermets
  • Mnを添加した Mo2NiB2型複硼化物系サーメットの焼結挙動
  • Mn オ テンカ シタ Mo2NiB2ガタ フクホウカブツケイ サーメット ノ ショウケツ キョドウ

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The liquid phase sintering behavior of the Mo2NiB2 base cermets was investigated by using Ni-5 mass%B-53.25 mass%-0, 5, 10 mass%Mn model cermets.<BR>Mo2NiB2 complex boride base cermets consisting of the Mo2NiB2 hard phase and Ni base binder were produced from powder mixtures of Ni2B, Mo2B5, Mo, Ni and Mn. Full densification of the cermets was achieved by the quasi-eutectic liquid phase between the Ni binder and Mo2NiB2 hard phase associated with a diffusion reactive sintering process. Orthorhombic Mo2NiB2 was formed during solid state sintering as a result of the reaction among NiB, Ni and Mo for the compacts without Mn and the reaction among MoB, Ni and Mo for the Mn containing compacts. Additions of Mn resulted in increasing the Mo2NiB2 forming temperature and decreasing the eutectic liquid phase formation temperature between Ni binder and the Mo2NiB2 hard phase. The size and dispersion of the boride phase changed depending on the sintering conditions, those are the liquid phase formation temperature and the amount of the liquid phase during sintering.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 65 (9), 775-778, 2001

    公益社団法人 日本金属学会

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