| Sintering Kinetics of Porous Ceramics from
High-Alumina Fly Ash |
Zelin Wan,a Xuebin Zhang,a,* Lei Guan,b Chongxin Cai,b Yi Feng,a Hui Dinga and Heren Guia
Pages : 171-175
DOI : 10.1080/0371750X.2017.1297738 |
| Abstract |
| The sintering kinetics of porous ceramics from high-alumina fly ash was studied by
stepwise isothermal dilatometry associated with scanning electron microscopic
observation, X-ray diffraction phase identification, and mechanical properties analysis.
This work used Makipirtti-Meng method to analyze the date of stepwise isothermal
shrinkage. The shrinkage data was fitted well to the rate equation which was analyzed
by Makipirtti-Meng method. The apparent activation energy E values obtained at
1250o-1400oC are 679.28 kJ.mol–1. The sintering temperature has a great influence on
sintered products’ properties which include open porosity and flexural strength. The
results were well supported by microstructure analysis of sintered samples.
[Keywords: Sintering kinetics, SID measurement, Mechanical properties, High-alumina
fly ash, Porous ceramics] |
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