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$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

The f-ratio model for quantitative X-ray microanalysis.

Chaoyi Teng¹, Raynald Gauvin²

¹AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, China.

|September 14, 2021

Summary

This summary is machine-generated.

The f-ratio method offers accurate elemental analysis using X-ray microanalysis. This new technique, based on scanning electron microscopy and energy dispersive spectroscopy, provides reliable quantitative results for material composition.

Keywords:

Cold field emission SEM EDS Monte Carlo simulation Quantitative X-ray microanalysis The f-ratio method

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Area of Science:

Materials Science
Analytical Chemistry
Physics

Background:

Quantitative X-ray microanalysis is crucial for determining material composition.
Existing methods may have limitations in accuracy and applicability.
Development of novel analytical techniques is essential for advancing materials characterization.

Purpose of the Study:

To introduce and validate the novel f-ratio method for quantitative X-ray microanalysis.
To establish the theoretical relationship between system composition and the f-ratio using Monte Carlo simulations.
To investigate the influence of beam energy on the f-ratio model's performance.

Main Methods:

Utilizing a cold field emission scanning electron microscope/energy dispersive spectroscopy (SEM/EDS) system.
Calculating the f-ratio based on characteristic X-ray intensities.
Employing Monte Carlo simulations to develop the theoretical f-ratio model.
Formulating the f-ratio model with elemental concentrations and coefficients.

Main Results:

The f-ratio model was successfully formulated for binary (S-Fe) and ternary (O-Al-Si) systems.
The effect of beam energy on the f-ratio was investigated.
Quantitative analysis of standard pyrite (FeS2) and kyanite (Al2SiO5) demonstrated high accuracy.
The f-ratio method achieved satisfying accuracy in elemental composition determination.

Conclusions:

The f-ratio method is a validated and accurate technique for quantitative X-ray microanalysis.
The developed f-ratio model provides a reliable tool for elemental analysis in various material systems.
This method shows significant potential for applications in materials science and related fields.