*Member, American Ceramic Society.
Novel Mullite Synthesis Based on Alumina Nanoparticles and a Preceramic Polymer
Article first published online: 28 MAR 2006
Journal of the American Ceramic Society
Volume 89, Issue 5, pages 1577–1583, May 2006
How to Cite
Bernardo, E., Colombo, P., Pippel, E. and Woltersdorf, J. (2006), Novel Mullite Synthesis Based on Alumina Nanoparticles and a Preceramic Polymer. Journal of the American Ceramic Society, 89: 1577–1583. doi: 10.1111/j.1551-2916.2006.00963.x
G. Soraru—contributing editor
- Issue published online: 4 MAY 2006
- Article first published online: 28 MAR 2006
- Manuscript No. 21097. Received October 25, 2005; approved January 20, 2006.
Heating in air of a selected mixture of a silicone resin and alumina nanoparticles in the temperature range 1200°–1500°C yielded dense, crack-free mullite samples. Al2O3, due to its nanometric size, proved to be very reactive toward silica, deriving from the ceramization of the preceramic polymer, leading to the formation of a large volume fraction of mullite crystals even at low firing temperatures (1250°C). Because of the homogeneity of the distribution of alumina nanoparticles in the starting system, the ceramized samples exhibited a very fine microstructure consisting of crystals with an average dimension in the range of 50–300 nm.