The aim of the project is to develop new types of high quality, cost effective ceramics with improved thermomechanical properties based on the two phases x-sialon and mullite. The project should provide the necessary background for a later Type 1 BRITE/EURAM project on the use of advanced x-sialon/mullite ceramics for high temperature engineering or other advanced applications.
With this research, European industry has the chance to lead in developing cost-effective mullite-based materials as a useful high temperature ceramic. It also brings information, and a better understanding of the relation between properties, microstructure, and interfaces in ceramic-ceramic composites.
The project involves:
-Developing cost effective methods for the fabrication of high quality powders for advanced high-temperature xªsialon/mullite ceramics with improved microstructure and enhanced properties.
-Developing shaping technology and pressureless sintering as well as sinter-hip techniques for the fabrication of near theoretical density, high strength components of reliable shape and geometry in x-sialon and x-sialon/mullite ceramics.
-Developing of x-sialon/mullite composites with tailored microstructure composed of prismatic mullite "whiskers" in a fine grained matrix to achieve improved mechanical strength, thermal shock resistance and oxidation resistance at high temperatures.
-Special emphasis on the control of fine particles in the fabrication process.