Ultra‐high temperature ceramic (UHTC) and polymorphic structures often experience unique material properties for applications related to aerospace, energy and lightweight designs. Structures made from UHTCs are known to have high thermal thresholds that can withstand temperatures up to 3000 °C without changes in their crystal structure. Alternatively, polymorphic ceramics can have a change in their atomic configuration and crystalline geometry due to external stimuli well before their melting temperature. From a multiscale perspective, UHTC and its composites have a stable structure in terms of crystalline geometry and do not require atomic‐level description to observe the changes in their constitutive relations due to high thermal input. However, UHTC composites can be prone to chemical reactions, such as oxidation, well before their melting temperature which leads to UHTCs exhibiting a self‐healing behavior. Polymorphic structures experience a change in their crystallinity, where atomic‐level characterization and constitutive relations are required in order to describe the changes in their underlying structure in real time. The presented work highlights some of the recent research in describing UHTCs, polymorphic structures and their composites through continuum and atomistic characterization of crystallinity, chemical kinetics, and multiscale depiction.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Characterization of Ultra‐High Temperature and Polymorphic Ceramics


    Contributors:


    Publication date :

    2021-05-24


    Size :

    23 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




    Ultra High Temperature Ceramics (UHTCs)

    Johnson S. M. | NTIS | 2015


    Ultra High Temperature Ceramics (UHTCs)

    Johnson, Sylvia M. | NTRS | 2015


    Ultra High Temperature Ceramics: A Journey

    Johnson, Sylvia Martian | NTRS | 2011


    Flow Characterization of Porous Ultra-High-Temperature Ceramics for Transpiration Cooling

    Ifti, Hassan Saad / Hermann, Tobias / McGilvray, Matthew et al. | AIAA | 2022


    Ultra-high temperature ceramics developments for hypersonic applications

    Justin, Jean-François / Julian-Jankowiak, Aurélie / Guérineau, Vincent et al. | Springer Verlag | 2020