Effect of Thermal History on β→γ Transformation of Pure Ca<sub>2</sub>SiO<sub>4</sub>

DOI Web Site Web Site 3 Citations Open Access
  • SHIBATA Sumio
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • KISHI Kazuhiro
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • ASAGA Kiyoshi
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology
  • DAIMON Masaki
    Department of Inorganic Materials, Faculty of Engineering, Tokyo Institute of Technology

Bibliographic Information

Other Title
  • Ｃａ２ＳｉＯ４のβ→γ転移に及ぼす熱履歴の影響
  • Ca2SiO4 ノ ベータ ガンマ テンイ ニ オヨボス ネツ リレキ ノ エ

Search this article

Description

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.

Journal

Citations (3)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top