Comparison of the properties of glass, glass–ceramic and ceramic materials produced from coal fly ash
2007; Elsevier BV; Volume: 153; Issue: 1-2 Linguagem: Inglês
10.1016/j.jhazmat.2007.08.071
ISSN1873-3336
AutoresM. Erol, Sadriye Küçükbayrak, Ayşegül Ersoy‐Meriçboyu,
Tópico(s)Nuclear materials and radiation effects
ResumoGlass, glass-ceramic and ceramic materials were produced from thermal power plant fly ash without any additives. X-ray diffraction (XRD) analysis revealed the amorphous phase of the glass sample. Augite phase was detected in the glass-ceramic sample, while the enstatite and mullite phases occurred in the ceramic samples. Scanning electron microscopy (SEM) investigations showed that tiny crystallites homogeneously dispersed in the microstructure of the glass-ceramic sample and elongated crystals formed in the ceramic samples. Density values of the obtained samples are comparable to those of the commercially produced glass, glass-ceramic and ceramic samples. Toxicity characteristic leaching procedure (TCLP) results indicated that the produced samples could be taken as non-hazardous materials. Produced samples showed high resistance to alkali solutions in contrast to acidic solutions. Microstructural, physical, chemical and mechanical properties of the produced glass-ceramic samples are better than those of the produced glass and ceramic samples.
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