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6 results

  • Hydrogen Embrittlement of Ni-Based Inconel 718 Superalloy
  • Hanlei Zhang, Yuankang Wang, Xin Wang, Daozheng Li, Wei Xiong
  • Journal: Microscopy and Microanalysis / Volume 28 / Issue S1 / August 2022
  • Published online by Cambridge University Press: 22 July 2022, pp. 1628-1629
  • Print publication: August 2022
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  • Ultra-Microtome for the Preparation of TEM Specimens from Battery Cathodes
  • Hanlei Zhang, Chongmin Wang, Guangwen Zhou
  • Journal: Microscopy and Microanalysis / Volume 26 / Issue 5 / October 2020
  • Published online by Cambridge University Press: 01 September 2020, pp. 867-877
  • Print publication: October 2020
  • View abstract

    With the wide application of ultra-microtome sectioning in the preparation of transmission electron microscopy (TEM) specimens with bio- and organic materials, here, we report an ultra-microtome-based method for the preparation of TEM specimens from cathodes of Li-ion batteries. The ultra-microtome sectioning reduces the sample thickness to tens of nanometers and yields atomic resolution from the core region of particles of hundreds of nanometers. Analysis indicates that the mechanical cross-sectioning introduces no observable microstructural artifacts or structural damage, such as microcracking and nanoporosity. These results demonstrate the high efficiency of the ultra-microtome approach in preparing well-thinned specimens of particulate materials that allow for atomic-scale TEM imaging of a large number of sectioned particles in one single TEM specimen, thereby providing statistically significant results of the TEM analysis.