Crystallization of inviscid melt spun (IMS) calcia-alumina (CA) eutectic fibers

Yun Mo Sung, Stanley A. Dunn, James A. Koutsky

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Crystallization behavior of vitreous calcia-alumina (CA) fibers of eutectic composition (46.5 wt% CaO-53.5 wt% Al2O3) was studied by differential thermal analysis (DTA), scanning electron microscopy (SEM) and X-ray diffraction (XRD). From DTA results, crystallization temperature of the CA fibers ranges from 948 to 1034 °C according to DTA heating rates. The activation energy value for crystallization of the CA fibers was determined as 490 kJ/mol and 477 kJ/mol via Kissinger and Augis-Bennett methods, respectively. SEM for crystallized CA fibers showed surface roughness, whereas that for vitreous CA fibers showed typical glassy fracture. Wide angle X-ray diffractometer analysis on CA fibers which were crystallized by the DTA scans showed Ca12Al14O33 formation as a major phase and CaAl2O4 formation as a minor phase.

Original languageEnglish
Pages (from-to)169-172
Number of pages4
JournalCeramics International
Volume21
Issue number3
DOIs
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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