α・Al<sub>2</sub>O<sub>3</sub>を含むムライト焼結塊からなる粒とNa<sub>2</sub>O・2SiO<sub>2</sub>ガラスとの加熱反応

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タイトル別名
  • Reaction Between the Sintered Mullite Particle Containing α-Al<sub>2</sub>O<sub>3</sub> and Na<sub>2</sub>O⋅2SiO<sub>2</sub> Glass
  • アルファ-Al2O3 オ フクム ムライト ショウケツカイ カラ ナル ツブ ト Na2O 2SiO2 ガラス ト ノ カネツ ハンノウ

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説明

In order to examine the change of composition in the matrix of fire clay refractory during heating, the reaction between α-Al2O3 containing mullite particle and Na2O⋅2SiO2 glass was studied with varied temperatures from I hr to 96 hrs.<br>Obtained results were as follows;<br>1) The dissolution process of mullite into glass is the first order reaction in the heating procedure of 36-64 hrs and its activation energy was ca. 50kcal/mol. In the case of longer heating time, diffusion rate of mullite particle into glass was saturated.<br>2) The content of α-Al2O3 in the particle increased slightly with the heating time.<br>3) In the process of reaction between mullite particle and Na2O⋅2SiO2 glass, both nephelite and carnegieite deposited. The amout of nephelite decreased with the rise of temperature, but that of carnegieite was affected by the amount of Na2O⋅2SiO2 glass and heating temperature.<br>Especially, the less the amount of glass added, the more the amount of carnegieite increased with the heating temperature.

収録刊行物

  • 窯業協會誌

    窯業協會誌 75 (859), 70-73, 1967

    公益社団法人 日本セラミックス協会

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