Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Grain Boundaries Imaged by Integration of Sobel Filtered Scanning Transmission Electron Micrographs

  • Kang, Min-Chul (School of Advanced Material Science & Engineering, Sungkyunkwan University) ;
  • Oh, Jinsu (School of Advanced Material Science & Engineering, Sungkyunkwan University) ;
  • Yang, Cheol-Woong (School of Advanced Material Science & Engineering, Sungkyunkwan University)
  • Received : 2018.12.25
  • Accepted : 2018.12.28
  • Published : 2018.12.30
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Abstract

One of the most important factors determining the properties of a material is its grain size. However, unclear grain boundaries in the image hinder an accurate measurement of grain size. We demonstrate that grain boundaries existing in the images obtained by scanning transmission electron microscopy (STEM) can be clearly distinguished by applying a Sobel filter to a tilting series of STEM images of a hydrogenation-disproportionation-desorption-recombination processed Nd2Fe14B magnet sample.

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References

  1. Pauli L, Heikki R, Tapio S, Hannu H, Jani R (2014) Influence of grain size distribution on the Hall-Petch relationship of welded structural steel. Materials Science & Engineering A. 592, 28-39. https://doi.org/10.1016/j.msea.2013.10.094
  2. Sobel I, Feldman G (1968) A 3${\times}$3 isotropic gradient operator for image processing. a talk at the Stanford Artificial Project.