Title of article
Bending strength and crack-healing behavior of Al2O3/SiC composites ceramics
Author/Authors
Kim، نويسنده , , Hae Sook and Kim، نويسنده , , Mi-Kyung and Kang، نويسنده , , Sun Bae and Ahn، نويسنده , , Seok Hwan and Nam، نويسنده , , Ki Woo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
4
From page
672
To page
675
Abstract
Five kinds of ceramics were used to evaluate the bending strength under three-point bending. The bending test was carried out at room temperature. The crack-healing behavior and the bending strength of the crack-healed specimens were investigated from room temperature to 1723 K. The bending strength of Al2O3/SiC composite ceramics is higher than that of Al2O3 monolithic. Al2O3/SiC composite ceramics could completely heal semicircular cracks with diameters 100 μm. The bending strength of Al2O3/SiC composite ceramics significantly increased after heat treatment at 1573 K for 1 h in air. The crack-healing ability of Al2O3/SiC composite ceramics was the best in additive powder 3 wt.% Y2O3.
Keywords
Crack healing , Multi-composite ceramics , Al2O3/SiC composite ceramics , Bending strength (?b) , Additive powder Y2O3
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2008
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2155577
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