Characterization of a glass-ceramic produced from thermal power plant fly ashes

被引：81

作者：

Erol, M ^{[1
]}

Genç, A

Öveçoglu, ML

Yücelen, E

Küçükbayrak, S

Taptik, Y

机构：

[1] Istanbul Tech Univ, Chem & Met Engn Fac, Dept Chem Engn, TR-80626 Istanbul, Turkey

[2] Istanbul Tech Univ, Chem & Met Engn Fac, Dept Met & Mat Engn, TR-80626 Istanbul, Turkey

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 12期

关键词：

fly ash; glass-ceramics; mechanical properties; waste products;

D O I：

10.1016/S0955-2219(00)00099-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Glass-ceramic materials were developed from fly ash samples obtained from Cayirhan Thermal Power Plant in Turkey. On the basis of DTA analyses, nucleation experiments were carried out at 680 degrees C for 5, 10 and 15 h whereas crystallization experiments were performed at 924 degrees C for 20 min. Crystallized samples were cooled in the furnace. X-ray diffraction analyses revealed the presence of only the diopside [Ca(Mg,Al)(Si,Al)(2)O-6] phase in the produced glass-ceramic samples and scanning electron microscopy (SEM) investigations showed the presence of a homogeneously dispersed phase. The results of the Vickers microhardness tests indicated that the hardness values of the fly ash based glass-ceramic decreased with the increases in holding time at the nucleation temperature. In addition, wear resistance of fly ash-based glass-ceramics decreased with holding time at the nucleation temperature. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2209 / 2214

页数：6

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