Affiliation:
1. Hebei Polytechnic University
Abstract
AlN-ZrO2 composites were prepared by solid state reaction in N2 atmosphere at 1500°C for 4h
with PSZ and Al powders as raw materials. Effects of Al content on performance of the composites and
the process of nitriding reaction were investigated. The results showed that surface layer reaction of
samples happened between 450°C and 765°C, and diffusion reaction happened between 765°C and
1500°C. With increasing of Al content, thermal expansion coefficient decreased, bending strength
increased, thermal shock resistance and oxidization resistance were improved. Finally, bending strength
of 73.61 MPa and thermal expansion coefficient of 6.06×10-6 /°C were realized for AlN-ZrO2 composites.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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