Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1464607 | Ceramics International | 2008 | 6 Pages |
Abstract
β-SiAlON has been prepared by a SHS reaction performed under high nitrogen pressure on a compacted mixture of silicon and mullite. In order to optimise this reaction, the solid mixture was prepared from a liquid solution in which the mullite (2SiO2-3Al2O3) was formed by a sol–gel process. The SHS samples were characterized by using Scanning Electron Microscopy (SEM) and X-ray diffraction. A Rietveld refinement performed on the recorded diffractograms revealed a very high formation rate of β-SiAlON (more than 80 wt%) when the reaction was carried out under low nitrogen pressure. From the whole of our results, a mechanism of β-SiAlON formation has been suggested.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
N. Pradeilles, M.C. Record, D. Granier, R.M. Marin-Ayral,