Sintering and crystallization of off-stoichiometric SrO·Al2O3·2SiO2 glasses

Yun Mo Sung, Sungtae Kim

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31 Citations (Scopus)


Glass-ceramics with the celsian-corundum binary join composition of 88.8 wt% SrO·Al2O3·2SiO2 - 11.2 wt% Al2O3, (SA2S-A), were fabricated by pressureless sintering and investigated for their sintering and crystallization behaviors. The (SA2S-A) glass powder showed crystallization peak and melting temperatures of approximately 1059 and 1550 °C, respectively and high sintering ability. The (SA2S-A) glass powders containing B2O3, (SA2S-A)B and those containing B2O3 and TiO2, (SA2S-A)BT showed lowered crystallization peak temperatures of 1033 and 997 °C, respectively. By applying Kissiger analyses to the DTA data of the (SA2S-A), (SA2S-A)B and (SA2S-A)BT glass powders, the activation energy values for crystallization were determined as 488, 370 and 333 kJ/mol, respectively. The Ozawa analyses on the DTA data gave the Avrami parameter values at 1.2, 1.1 and 1.9, respectively for the (SA2S-A), (SA2S-A)B and (SA2S-A)BT glass powders. The x-ray diffraction (XRD) patterns of the (SA2S-A) glass-ceramics, crystallized at 1100 °C for 4 h, showed formation of both the monocelsian and hexacelsian phases. The (SA2S-A)B and (SA2S-A)BT glass-ceramics crystallized at 1100 °C for 1 h, showed formation of the phase-pure monocelsian and did not show any evidence of the hexacelsian formation prior to the monocelsian formation.

Original languageEnglish
Pages (from-to)4293-4299
Number of pages7
JournalJournal of Materials Science
Issue number17
Publication statusPublished - 2000 Sept
Externally publishedYes

Bibliographical note

Funding Information:
This study was supported by ‘San-Hak-Yon Consortium’ of Daejin University in 1999.

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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