Mechanical properties of α-cordierite and β-spodumene glass-ceramics prepared by sintering and crystallization heat treatments

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Abstract

The α-cordierite and β-spodumene glass-ceramics containing B2O3, P2O5, and/or TiO2 were produced in a bar shape by hot pressing and crystallization heat treatments of glass powders. Various physical properties of the glass-ceramics were examined. The α-cordierite glass-ceramics showed intrinsic high mechanical property values, whereas the β-spodumene glass-ceramics showed rather low ones. The relatively low density in β-spodumene glass-ceramics would lead to the low mechanical property values. This low density in the β-spodumene glass-ceramics would result from a possible premature crystallization which might hinder a completion of sintering of the matrix. The glass-ceramics without TiO2 showed slightly higher mechanical properties than those with TiO2. This difference would result from slightly higher density in the glass-ceramics without TiO2.

Original languageEnglish
JournalJournal of Engineering and Applied Science
Volume23
Issue number5
Publication statusPublished - 1997 Jan 1
Externally publishedYes

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Glass ceramics
Sintering
Crystallization
Heat treatment
Mechanical properties
Hot pressing
Physical properties
Powders
Glass

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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abstract = "The α-cordierite and β-spodumene glass-ceramics containing B2O3, P2O5, and/or TiO2 were produced in a bar shape by hot pressing and crystallization heat treatments of glass powders. Various physical properties of the glass-ceramics were examined. The α-cordierite glass-ceramics showed intrinsic high mechanical property values, whereas the β-spodumene glass-ceramics showed rather low ones. The relatively low density in β-spodumene glass-ceramics would lead to the low mechanical property values. This low density in the β-spodumene glass-ceramics would result from a possible premature crystallization which might hinder a completion of sintering of the matrix. The glass-ceramics without TiO2 showed slightly higher mechanical properties than those with TiO2. This difference would result from slightly higher density in the glass-ceramics without TiO2.",
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