Paper Title:
Phase Evolution and Sintering Characteristics of Mullite-Based Ceramics Prepared from Coal Fly Ash, Calcined Bauxite and Ball Clay
  Abstract

The study provides a novel way for the utilization of coal fly ash, and enriches the sintering mechanism in preparation of low-cost, high performance mullite based ceramic. The phase evolution, microstructure, densification behavior and flexural strength as a function of the sintering temperatures, were investigated by XRD, SEM and evaluated by density, open porosity and shrinkage and three point bending method, respectively. Secondary mullite nucleates from the dissolution of alumina in transient liquid phase at 1300°C. Above 1400°C, mullite content increases and the densification is promoted with increasing temperature. Fast densification takes place and high flexural strength of 149MPa is achieved at 1600°C.

  Info
Periodical
Advanced Materials Research (Volumes 79-82)
Edited by
Yansheng Yin and Xin Wang
Pages
2019-2022
DOI
10.4028/www.scientific.net/AMR.79-82.2019
Citation
X. Ma, X. Yao, S. D. Hua, "Phase Evolution and Sintering Characteristics of Mullite-Based Ceramics Prepared from Coal Fly Ash, Calcined Bauxite and Ball Clay", Advanced Materials Research, Vols. 79-82, pp. 2019-2022, 2009
Online since
August 2009
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$32.00
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