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Effect of heating rate on densification, microstructure and strength of spark plasma sintered ZrB2-based ceramics

Authors :
Wei-Ming Guo
Guo-Jun Zhang
Pei-Ling Wang
Omer Van der Biest
Jef Vleugels
Source :
Scripta Materialia. 62:802-805
Publication Year :
2010
Publisher :
Elsevier BV, 2010.

Abstract

The influence of the spark plasma sintering (SPS) heating rate on densification, microstructure and strength of ZrB2–20 vol.% SiC composites with or without 5 vol.% Yb2O3 addition was assessed. A low heating rate promoted densification, induced grain growth and slightly increased the strength in the Yb2O3-free ceramics, whereas the low heating rate inhibited the densification, maintained the grain size and greatly decreased the strength in the Yb2O3-doped composites.

Details

ISSN :
13596462
Volume :
62
Database :
OpenAIRE
Journal :
Scripta Materialia
Accession number :
edsair.doi...........e07cacdce8e3d3505e6a15c213787b79
Full Text :
https://doi.org/10.1016/j.scriptamat.2010.02.002