Abstract
This paper reports the microstructure of hot-pressed ZrB₂-SiC ceramics with added B₄C as characterized by transmission electron microscopy. ZrB₂ has a melting point of 3245oC, a relatively low density of 6.1 g/cm3, and specific mechanical properties at an elevated temperature, making it a candidate for application to environments with ultra-high temperatures which exceed 2000℃. Due to the non-sinterability of ZrB₂-based ceramics, research on sintering aids such as B₄C or MoSi₂ has become prominent recently. From TEM investigations, an amorphous layer with contaminant oxide is observed in the vicinity of B₄C grains remaining in hot-pressed ZrB₂-SiC ceramics with B₄C as an additive. The effect of a B₄C addition on the microstructure of this system is also discussed.
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 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.
