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Browsing Chemical and Materials Engineering - Faculty Research by Subject "boron carbide"

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    Microalloying boron carbide with silicon to achieve dramatically improved ductility 

    An, Qi; Goddard III, William A. (American Chemical Society, 2014)
    Boron carbide (B4C) is a hard material whose value for extended engineering applications such as body armor is limited by its brittleness under impact. To improve the ductility while retaining hardness, we used density ...

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    Nanotwinning and amorphization of boron suboxide 

    Kunka, Cody; An, Qi; Rudawski, Nicholas; Subhash, Ghatu; Zheng, James; Halls, Virginia; Singh, Jogender (Elsevier, 2018)
    Recently, researchers discovered that in contrast to isolated twins, periodic twins with nanoscale spacing can dramatically improve mechanical properties. Ceramics engineers now seek to incorporate this “nanotwinning” into ...

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    Shear-Induced Brittle Failure along Grain Boundaries in Boron Carbide 

    Yang, Xiaokun; Coleman, Shawn P.; LaSalvia, Jerry C.; Goddard III, William A.; An, Qi (American Chemical Society, 2018)
    The role that grain boundaries (GBs) can play on mechanical properties has been studied extensively for metals and alloys. However, for covalent solids such as boron carbide (B4C), the role of GB on the inelastic response ...