Title of article
Effect of sintering temperature on microstructure and mechanical properties of highly porous silicon nitride ceramics produced by freeze casting
Author/Authors
Ye، نويسنده , , Feng and Zhang، نويسنده , , Jingyi and Zhang، نويسنده , , Haijiao and Liu، نويسنده , , Limeng، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
4
From page
6501
To page
6504
Abstract
Highly porous Si3N4 with macroscopically aligned pores were prepared by the unidirectional freeze casting process using liquid N2 as refrigerant. The increased sintering temperature had no obvious influence on the porosity, but significantly promoted α → β-Si3N4 phase transformation and the growth of fibrous β-Si3N4 grains, and changed the pore structure. The flexural strength and fracture toughness of the sample sintered at 1900 °C could reach 73 MPa and 1.1 MPam1/2, respectively.
Keywords
microstructure , Freeze casting , mechanical properties , Porous Si3N4
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2010
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2163060
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