dc.contributor.authorDu, Zehui
dc.contributor.authorYe, Pengcheng
dc.contributor.authorZeng, Xiao Mei
dc.contributor.authorSchuh, Christopher A.
dc.contributor.authorTamura, Nobumichi
dc.contributor.authorZhou, Xinran
dc.contributor.authorGan, Chee Lip
dc.identifier.citationDu, Z., Ye, P., Zeng, X. M., Schuh, C. A., Tamura, N., Zhou, X., et al. (2017). Synthesis of monodisperse CeO2-ZrO2 particles exhibiting cyclic superelasticity over hundreds of cycles. Journal of the American Ceramic Society, 100(9), 4199-4208.en_US
dc.description.abstractNano- and microscale CeO2–ZrO2 (CZ) shape memory ceramics are promising materials for smart micro-electro-mechanical systems (MEMS), sensing, actuation and energy damping applications, but the processing science for scalable production of such small volume ceramics has not yet been established. Herein, we report a modified sol-gel method to synthesize highly monodisperse spherical CZ particles with diameters in the range of ~0.8-3.0 μm. Synchrotron X-ray micro-diffraction (μSXRD) confirmed that most of the particles are single crystal after annealing at 1450°C. Having a monocrystalline structure and a small specimen length scale, the particles exhibit significantly enhanced shape memory and superelasticity properties with up to ~4.7% compression being completely recoverable. Highly reproducible superelasticity through over five hundred strain cycles, with dissipated energy up to ~40 MJ/m3 per cycle, is achieved in the CZ particles containing 16 mol% ceria. This cycling capability is enhanced by ten times compared with our first demonstration using micropillars (only 50 cycles in Lai et al, Science, 2013, 341, 1505). Furthermore, the effects of cycling and testing temperature (in 25°C-400°C) on superelasticity have been investigated.en_US
dc.format.extent31 p.en_US
dc.relation.ispartofseriesJournal of the American Ceramic Societyen_US
dc.rights© 2017 The American Ceramic Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of the American Ceramic Society, The American Ceramic Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1111/jace.14972].en_US
dc.titleSynthesis of monodisperse CeO2-ZrO2 particles exhibiting cyclic superelasticity over hundreds of cyclesen_US
dc.typeJournal Article
dc.contributor.researchTemasek Laboratoriesen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionAccepted versionen_US

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