Member, American Ceramic Society.
High-Strength Zirconium Diboride-Based Ceramics
Article first published online: 7 JUL 2008
Journal of the American Ceramic Society
Volume 87, Issue 6, pages 1170–1172, June 2004
How to Cite
Chamberlain, A. L., Fahrenholtz, W. G., Hilmas, G. E. and Ellerby, D. T. (2004), High-Strength Zirconium Diboride-Based Ceramics. Journal of the American Ceramic Society, 87: 1170–1172. doi: 10.1111/j.1551-2916.2004.01170.x
R. Cutler—contributing editor
Supported by the Air Force Office of Scientific Research under Contract No.F49620-03-1-0072. ALC is supported by a Graduate Assistance in Areas of National Need Fellowship through the U.S. Department of Education.
- Issue published online: 7 JUL 2008
- Article first published online: 7 JUL 2008
- Manuscript No. 10712. Received December 2, 2003; approved February 25, 2004.
- high temperature;
- mechanical properties
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.