NDLI: Effect of size of fly ash particle on enhancement of mullite content and glass formation

Content Provider	Springer Nature Link
Author	Sultana, Parveen Das, Sukhen Bagchi, Biswajoy Bhattacharya, Alakananda Basu, Ruma Nandy, Papiya
Copyright Year	2011
Abstract	Quartz is widely replaced by fly ash in traditional porcelain composite. Increased strength and stability of the fly ash-mixed composite depends on the quantity and crystallinity of the mullite phase in the fly ash. Our aim in this investigation is to increase the formation of mullite in nanocrystalline form and study the effect of temperature. Quantitative estimation of mullite and residual quartz content were done by X-ray diffraction (XRD) and nanostructure and crystallization were studied using differential thermal analysis (DTA), field effect scanning electron microscopy (FESEM), XRD and Fourier transform infrared (FTIR) spectroscopy. The results show that fly ash sieved through 250 holes/cm$^{2}$ mesh contain more mullite initially and growth of mullite as well as glass formation was faster in this sample compared to coarse fly ash. The maximum mullite in these samples was formed at 1600°C. Transformation of quartz and cristobalite phases into glassy phase was also faster for smaller particle sizes of fly ash.
Starting Page	1663
Ending Page	1670
Page Count	8
File Format	PDF
ISSN	02504707
Journal	Bulletin of Materials Science
Volume Number	34
Issue Number	7
e-ISSN	09737669
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-06-17
Publisher Institution	Indian Academy of Sciences
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fly ash mullite composites spinels X-ray methods Engineering Materials Science
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science

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