Affiliation:
1. Harbin Institute of Technology
Abstract
The Al2O3/LiTaO3 (ALT) composite ceramics were fabricated by hot pressing method
and polarization treated at different temperatures along height and width directions. Effects of
polarization treatment on mechanical properties of the ALT composite ceramic were investigated.
Flexural strength decreased with the increase of polarization temperature. Meanwhile, the flexural
strength of samples polarized in height direction is higher than that polarized in width direction. The
composite ceramic fractures intragranularly, and many rupture steps in polarization direction were
observed on fractographs of the composite ceramics. Domain switching in LiTaO3 particles
increased the resistance of crack propagation and improved the mechanical properties of the
polarized ALT composite ceramics.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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