ホウ酸-エタノールアミン縮合物の熱分解による窒化ホウ素及び炭化ホウ素の生成

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タイトル別名
  • Formation of Boron Nitride and Boron Carbide by Pyrolysis of Condensation Products of Boric Acid and Ethanolamines
  • ホウサン エタノールアミン シュクゴウブツ ノ ネツ ブンカイ ニ ヨル チッ

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説明

Boron nitride was formed from boric acid-diethanolamine or -triethanolamine condensation products by their pyrolysis in a nitrogen flow. The condensation products obtained from boric acid-diethanolamine system (molar ratio 1:1 and 2:3) were glassy solids and had a polymeric structure containing the B-O-C bond. Monomeric triethanolamine borate, which contained both B-O-C and coordinate B-N bonds, was formed from boric acid-triethanolamine system. Pyrolysis of these condensation products in N2 flow at 1400°C yielded boron nitride. A small amount of B4C was also formed, depending on the molar ratio or on the carbon content of the condensation products. In order to clarify the effect of the nitrogen in the molecules, the pyrolysis was conducted in an argon flow. Both BN and B4C were formed and the influence of nitrogen in the precursors on the pyrolyzed products was observed.

収録刊行物

  • 窯業協會誌

    窯業協會誌 95 (1097), 140-144, 1987

    公益社団法人 日本セラミックス協会

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