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Fracture energy of 6H-SiC at the microscale: effects of testing geometry and notch preparation
Zhuoqi Lucas Li, Siyang Wang, Ao Li +5
Micromechanical testing enables small-scale fracture energy measurements, but values depend strongly on geometry and specimen preparation. Here, the fracture energy of the single-c…
Strong lead-free bioinspired piezoceramics for durable energy transducers
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang +9
Durable, high-performance and eco-friendly lead-free piezoceramics are essential for next-generation sustainable energy transducers and electromechanical systems. While significant…
Observing the crack tip behaviour at the nanoscale during fracture of ceramics
Oriol Gavalda-Diaz, Max Emmanuel, Katharina Marquardt +2
Ultimately, brittle fracture involves breaking atomic bonds. However, we still lack a clear picture of what happens in the highly deformed region around a moving crack tip. Consequ…
Determining the Fundamental Failure Modes in Ni-rich Lithium Ion Battery Cathodes
Siyang Wang, Zonghao Shen, Aigerim Omirkhan +3
Challenges associated with in-service mechanical degradation of Li-ion battery cathodes has prompted a transition from polycrystalline to single crystal cathode materials. Whilst f…
Shear and delamination behaviour of basal planes in Zr3AlC2 MAX phase studied by micromechanical testing
Siyang Wang, Oriol Gavalda-Diaz, Jack Lyons +1
The mechanical properties of layered, hexagonal-structured MAX phases often show the combined merits of metals and ceramics, making them promising material candidates for safety cr…
The effect of hydrogen on the multiscale mechanical behaviour of a La(Fe,Mn,Si)13-based magnetocaloric material
Siyang Wang, Oriol Gavalda-Diaz, Ting Luo +6
Magnetocaloric cooling offers the potential to improve the efficiency of refrigeration devices and hence cut the significant CO2 emissions associated with cooling processes. A crit…