Ｃａ２ＳｉＯ４のβ→γ転移に及ぼす熱履歴の影響

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書誌事項

タイトル別名
  • Effect of Thermal History on β→γ Transformation of Pure Ca<sub>2</sub>SiO<sub>4</sub>
  • Ca2SiO4 ノ ベータ ガンマ テンイ ニ オヨボス ネツ リレキ ノ エ

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説明

Synthesized γ-C2S samples were heated at 800°-1500°C for 10min-48h, and cooled rapidly, in order to study the effect of thermal history on β→γ transformation of pure C2S. The results obtained were as follows:<br>(1) β-C2S/γ-C2S ratio varies in a complicated way depending on the heating temperature and time.<br>(2) When samples are heated below 1000°C, β/γ ratio increases with heating time. β/γ ratio should depend on the amount of α' phase produced by γ→α' transformation.<br>(3) When temperatures are heated between 1000°-1400°C, β/γ ratio is supposed to be determined by the particle size of β-C2S. The nucleation of γ-C2S must take place on the surface of β-C2S, and the amount of γ-C2S is largest when particle diameter is about several micrometers. The particle growth causes the decrease in β/γ ratio at first, and the increase later.<br>(4) High β/γ ratios are obtained by heating at 1500°C. Heating time or particle size does not play an important role in this case.

収録刊行物

  • 窯業協會誌

    窯業協會誌 91 (1059), 497-502, 1983

    公益社団法人 日本セラミックス協会

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