Abstract
Pressureless sintering was used to densify ZrB2–SiC ultra‐high temperature ceramics. The physical, mechanical, thermal, electrical, and high temperature properties were investigated. This comprehensive set of properties was measured for ZrB2 containing 20 vol% SiC in which B4C and C were used as the sintering aids. The three‐point flexural strength was 361±44 MPa and the elastic modulus was 374±25 GPa. The Vickers hardness and fracture toughness were 14.7±0.2 GPa and 4.0±0.5 MPa·m1/2 respectively. Scanning electron microscopy studies of the microstructure of ZrB2–SiC showed that SiC particles were distributed homogenously in the ZrB2 matrix with little residual porosity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
