Characterization of fly ash-based glass-ceramic samples quenched in air followed by crystallization stage

M. Erol*, S. Küçükbayrak, A. Ersoy-Meriçboyu, M. L. Öveçoǧlu

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Özet

The effect of quenching in air on the microstructure and the mechanical properties of the fly ash-based glass-ceramic samples were investigated. SEM observations clearly revealed that the presence of homogeneously dispersed tiny crystallites and crystalline grain size which increased with holding time at the nucleation stage. Furthermore, extensive cracks on the surface of the glass-ceramics were present due to quenching in air. On the other hand, XRD analyses clearly showed that the only crystalline phase that observed was diopside [Ca(Mg, Al)(Si, AL)2O6]. The result of the Vickers microhardness tests indicated that the hardness values of the fly ash-based glass-ceramics decreased with increasing holding time at the nucleation temperature. Resistance to wear decreased with the increase in crystalline grain size, similar to hardness values.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1931-1934
Sayfa sayısı4
DergiKey Engineering Materials
Hacim264-268
Basın numarasıIII
Yayın durumuYayınlandı - 2004
EtkinlikProceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey
Süre: 29 Haz 20033 Tem 2003

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