Formation of Mullite from Filled Siloxanes
Authors:
- Daniel SuttorDSDaniel Suttor
- Hans‐Joachim KleebeHKHans‐Joachim Kleebe
- Gunter ZieglerGZGunter Ziegler
- 1 October 1997
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 80 (10) , 2541-2548
Abstract
Monolithic mullite with low sintering shrinkage was synthesized from polymer/filler blendsMthat is, siloxane/alumina (siloxane/Al 2 O 3 ) (and siloxane/aluminum (siloxane/Al)) mixtures. The synthesis was based on a reaction‐bonding process of amorphous silica, which formed when the siloxane was oxidized, with Al 2 O 3 (or oxidized aluminum filler) at temperatures >1250°C. Thermodynamic calculations were used to calculate the phase composition at equilibrium. Thermoanalytical, infrared‐spectroscopic, and microscopic techniques were applied to reveal the microstructural evolution. The corresponding volume changes were used to evaluate the linear shrinkage, based on the quantitative phase assemblage.Keywords
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