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A consistent path for phase determination based on transmission electron microscopy techniques and supporting

Lukas Konrad1, Haishuang Zhao2, Christian Gspan1

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Summary
This summary is machine-generated.

This study integrates transmission electron microscopy (TEM) techniques for industrial materials. It links 3D diffraction and spectroscopy to improve compositional analysis of complex samples like MAX phases.

Keywords:
EELS/EDS analysisHard coatingsHard metalsHydrogenic screening factorsPrecession electron tomography

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Solid-State Physics

Background:

  • Industrial materials exhibit complex phase chemistry and structural diversity, challenging comprehensive analysis.
  • Integrating multiple characterization techniques is crucial for a complete understanding but often lacks seamless connection.
  • Transmission Electron Microscopy (TEM) offers powerful insights but requires advanced data processing for complex samples.

Purpose of the Study:

  • To establish a continuous analytical workflow for industrial materials using TEM.
  • To link 3D diffraction data and high-resolution imaging with spectroscopic analyses.
  • To improve the accuracy of compositional analysis in complex materials like MAX phases.

Main Methods:

  • Acquisition of 3D diffraction data and high-resolution imaging using TEM.
  • Application of energy-loss fine-structure simulations.
  • Quantitative electron energy-loss (EEL) and energy-dispersive X-ray (EDX) spectroscopy.
  • Synchronous X-ray spectroscopy for comparative analysis.

Main Results:

  • A continuous analytical path was developed, connecting structural characterization with spectroscopic data.
  • Compositional analysis of a MAX phase revealed an offset in theoretical sensitivity factors due to screening factors.
  • Quantitative EEL and EDX results were successfully matched with synchronous X-ray spectroscopy data.

Conclusions:

  • The developed integrated TEM approach provides a consistent and complete picture of industrial materials.
  • Accurate compositional analysis of complex materials like MAX phases is achievable by addressing theoretical factor offsets.
  • This methodology enhances the reliability of multi-technique characterization in materials science.