Sintering Kinetics of Porous Ceramics from High-Alumina Fly Ash. Issue 3 (3rd July 2017)

• Record Type: Journal Article
• Authors: Wan, Zelin; Zhang, Xuebin; Guan, Lei; Cai, Chongxin; Feng, Yi; Ding, Hui; Gui, Heren
• Is Part Of: Transactions of the Indian Ceramic Society. Volume 76:Issue 3(2017)
• Page Start: 171
• Page End: 175
• Publication Date: 2017-07-03
• Subjects: Sintering kinetics -- SID measurement -- Mechanical properties -- High-alumina fly ash -- Porous ceramics; Pottery -- India -- Periodicals; 666.306254
• DOI: 10.1080/0371750X.2017.1297738
• Languages: English
• ISSNs: 0371-750X

Abstract

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 Δ E values obtained at 1250 o -1400 o C 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. GRAPHICAL ABSTRACT: