High Strength ZrB₂-based Ceramics
Zirconium diboride (ZrB2) and ZrB2 ceramics containing 10, 20, and 30 vol% SiC particulates were prepared from commercially available powders by hot pressing. Four-point bend strength, fracture toughness, elastic modulus, and hardness were measured. Modulus and hardness did not vary significantly with SiC content. in contrast, strength and toughness increased as SiC content increased. Strength increased from 565 MPa for ZrB2 to >1000 MPa for samples containing 20 or 30 vol% SiC. the increase in strength was attributed to a decrease in grain size and the presence of WC.
A. L. Chamberlain et al., "High Strength ZrB₂-based Ceramics," Journal of the American Ceramic Society, pp. 1170-1172, Wiley-Blackwell, Jan 2004.
The definitive version is available at http://dx.doi.org/10.1111/j.1551-2916.2004.01170.x
Materials Science and Engineering
Keywords and Phrases
SiC Particulates; Zirconium Diboride
Article - Journal
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