Phase diagram cuspidine (3CaO · 2SiO2 · CaF2)-CaF2

Takashi Watanabe, Hiroyuki Fukuyama, Masahiro Susa, Kazuhiro Nagata

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


Equilibrium phase diagram for the system cuspidine (3CaO · 2SiO2 · CaF2)-CaF2 has been studied by the quenching method and differential thermal analysis (DTA). Hermetically closed platinum capsules were used in both methods to prevent fluorine loss in the form of HF and SiF4 by reaction of the CaF2 with water vapor or SiO2. Cuspidine congruently melts at 1680 ± 2 K. The cuspidine-CaF2 system presents a simple eutectic type of phase diagram. The eutectic composition and temperature are 46 mass pct 3CaO · 2SiO2 - 54 mass pct CaF2 and 1515 ± 3 K, respectively.

Original languageEnglish
Pages (from-to)1273-1281
Number of pages9
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Issue number6
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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