Metastable adaptive orthorhombic martensite in zirconia nanoparticles
作者： Shaocun Liu , Wentao Hu , Yang Zhang , Jianyong Xiang , Fusheng Wen
DOI: 10.1107/S1600576714003331
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摘要: Reported here are observations of isolated orthorhombic (o) ZrO2 nanoparticles (NPs) in the Pbca space group under atmospheric conditions. These NPs composed o domains separated by internal semi-coherent boundaries. They identified to transform from lamellar-twinned tetragonal (t) NPs. The constraining effect twin boundaries impedes a direct martensitic transformation monoclinic (m) phase but favours phase. considered evolve lamellar-twinning boundaries, playing an important role stabilization structure observed should be adaptive martensite transformed t phase, different general consideration as intermediate stage. A new lattice correspondence (LC) relationship (011)o||(100)t and [100]o||[001]t is determined for t-to-o transformation. possible path proposed (space P42/nmc) (Pbcm or Pbc21, named oA) (Pbca, oB), LC (100)t||(100)oA||(011)oB [001]t||[010]oA||[100]oB.
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