Title: Strong ZrB2-SiC-WC Ceramics at 1600 °C
Authors: Zou, Ji ×
Zhang, Guo-Jun
Hu, Chun-Feng
Nishimura, Toshiyuki
Sakka, Yoshio
Vleugels, Jef
Van der Biest, Omer #
Issue Date: Mar-2012
Publisher: American Ceramic Society
Series Title: Journal of the American Ceramic Society vol:95 issue:3 pages:874-878
Abstract: High temperature flexural strength of ZrB220 vol% SiC ceramics (ZS) up to 1600 degrees C in high purity argon atmosphere was significantly improved by adding 5 vol% WC, but degraded when 5 vol% ZrC was added. ZrB220SiC5WC ceramic (ZSW) has a very high strength (mean +/- SD) of 675 +/- 33 MPa at 1600 degrees C, and also an elastic and transgranular fracture mode was observed. According to the analysis of the fracture modes and crack origins in ZSW ceramics, the improvement in strength above 1000 degrees C was attributed to the removal of the oxide impurities from grain boundaries.
ISSN: 0002-7820
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Surface and Interface Engineered Materials
× corresponding author
# (joint) last author

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