Title of article
The dependence of interlocking and laminated microstructure on toughness and hardness of β-SiC ceramics sintered at low temperature
Author/Authors
Yi، نويسنده , , J. and Xue، نويسنده , , W.J. and Xie، نويسنده , , Z.P and Liu، نويسنده , , W. and Cheng، نويسنده , , L.X. and Chen، نويسنده , , J. and Wang، نويسنده , , L. and Cheng، نويسنده , , H. and Gao، نويسنده , , Y.X. and Wang، نويسنده , , H.B.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
4
From page
338
To page
341
Abstract
Fully dense β-SiC ceramic has been sintered at low temperature (1500 °C) by spark plasma sintering (SPS) with Y4Al2O9 (YAM) and Y2O3 as additive. The sintered SiC samples have an interlocking and laminated microstructure of elongated grains, and reveal excellent mechanical properties. High hardness (31.2±1.54 GPa) and fracture toughness (6.6±0.37 MPa m1/2) are obtained simultaneously in SiC ceramics, which are quite different from previous researches. The indentation image shows that there are several different toughening mechanisms co-existing, which interact and further improve the fracture toughness of SiC ceramics.
Keywords
Toughness , Hardness , Crack growth resistance , SPS
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2013
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2174297
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