|About this Abstract
||MS&T22: Materials Science & Technology
||Manufacturing and Processing of Advanced Ceramic Materials
||Ultra-fast Densification of UHTC ZrB2
||Santanu Mondal, Juan Diego Shiraishi, Sreenivasulu Gollapudi, Carolina Tallon Galdeano, Jie-Fang Li, Dwight Viehland
|On-Site Speaker (Planned)
Ultra-fast sintering (UFS) is a joule heating technique, by which an extremely high heating rate is achieved. We have utilized UFS to sinter ZrB2 in seconds in an energy-efficient way. ZrB2 is an ultra-high temperature ceramic (UHTC) And due to high melting temperature, hardness, strength, thermal conductivity, and oxidation resistance, ZrB2 is a potential candidate for high temperature structural components for various commercial and strategic applications. In this work, commercial ZrB2 powder was rapidly sintered via UFS to 93% relative density within 60 second in vacuum without pressure. The UFS ZrB2 was characterized by XRD, SEM, and EDS techniques. The effect of time, voltage and intensity on densification and microstructural evolution was studied. Key samples were further characterized by indentation and oxidation to evaluate the resulting microstructures. Results show that this sintering technique has the potential to produce UHTC with similar attributes to the current-state-of-art.
||Planned: At-meeting proceedings