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Mechanical properties of hot-pressed 12H ceramics

Authors
Journal
Journal of the European Ceramic Society
0955-2219
Publisher
Elsevier
Publication Date
Volume
15
Issue
7
Identifiers
DOI: 10.1016/0955-2219(95)00038-v

Abstract

Abstract The mechanical properties of hot-pressed 12H poly-typoid phase with YAG as the sintering additive have been studied. The results showed that small amounts of YAG can greatly increase high temperature strength. At room temperature, the 12H with 2.5 wt% YAG possesses a flexural strength of 367 ±18 MPa, but its high temperature strength can reach above 500 MPa in the temperature range from 1000 to 1300 °C. The fracture mechanism has been discussed on the basis of the fracture morphology observed by SEM.

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