Effect of Alkali Oxides on Crystallization in CaO-SiO_2-CaF_2 Glasses

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概要

• 論文の詳細を見る

• In the initial solidification stage in continuous steel casting, controlled crystallinity of the slag film is essential for regulating the horizontal heat flux from the strand to the mold. The effects of alkali oxides on the formation of cuspidine (3CaO·2SiO2·CaF2), which is the primary crystalline phase in the flux film in CaO–SiO2–CaF2–M2O glasses (M=Li, Na, K), were investigated in both isothermal and heating conditions. Addition of alkali oxides enhances crystallization of cuspidine by lowering the glass transition temperature and lowering the apparent activation energy of crystal growth. However, single excess addition of alkaline oxide (M2O) hinders the formation of cuspidine as CaF2 is substituted by M2O.

• 社団法人 日本鉄鋼協会の論文
• 2008-07-15

著者

• Nagata K

  Tokyo Inst. Technol.

• Nagata Kazuhiro

  Tokyo Inst. Technol. Tokyo Jpn

• Nagata Kazuhiro

  Department Of Chemistry And Materials Science Tokyo Institute Of Technology

• WATANABE Takashi

  Graduate School of Biomedical Engineering, Tohoku University

• NAGATA Kazuhiro

  Graduate School of Science and Engineering, Tokyo Institute of Technology

• Nagata K

  Department Of Chemistry And Materials Science Tokyo Institute Of Technology

• HASHIMOTO Hidetaka

  Graduate School of Science and Engineering, Tokyo Institute of Technology

• HAYASHI Miyuki

  Graduate School of Science and Engineering, Tokyo Institute of Technology

• Hashimoto Hidetaka

  Graduate School Of Science And Engineering Tokyo Institute Of Technology

• Hayashi M

  Department Of Chemistry And Materials Science Tokyo Institute Of Technology

• Nagata Kazuhiro

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Watanabe Takashi

  Department Of Chemistry And Materials Science Tokyo Institute Of Technology

• Watanabe Takashi

  Graduate Department Of Mathematical & Life Sciences Hiroshima Univ.

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