Abstract
A ZrB2 based ceramic matrix composite containing 20 vol.% SiC whisker was fabricated at 1800 °C for 1 h under a uniaxial load of 40 MPa by hot-pressing. The microstructure and mechanical properties of the composite were investigated. It was shown that mechanical properties were improved by introduction of SiC whisker, especially for the fracture toughness. The fracture toughness was ∼5.97±0.3 MPa m0.5, which was much higher than that of monolithic ZrB2 and SiC particle reinforced ZrB2 composite. The toughening mechanisms were whisker bridging, crack deflection around whiskers as well as whisker pull-out and fracture. The results presented here point to a potential method for improving fracture toughness of ultra-high temperature ceramic.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
