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Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

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Published on: October 2, 2017

A reference material for X-ray diffraction line profile analysis.

P Scardi¹, M D'Incau¹, M A Malagutti¹

¹Department of Civil, Environmental and Mechanical Engineering University of Trento via Mesiano 77 38123Trento Italy.

Journal of Applied Crystallography

|October 9, 2025

Summary

This summary is machine-generated.

This study introduces a low-cost nanocrystalline Fe-1.8%Cr steel powder as a versatile reference material for powder diffraction. Its well-defined properties enable robust testing of various diffraction analysis methods.

Keywords:

Rietveld method Williamson–Hall method X-ray diffraction diffuse scattering line profile analysis pair distribution functions reference materials steel whole powder pattern modelling

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Published on: August 22, 2017

Area of Science:

Materials Science
Crystallography
Nanotechnology

Background:

Nanocrystalline materials offer unique properties but require precise characterization.
Standardized reference materials are crucial for validating advanced analytical techniques.

Purpose of the Study:

To develop and characterize a cost-effective nanocrystalline Fe-1.8%Cr steel powder for powder diffraction.
To evaluate its suitability as a reference material across multiple instruments and analysis methods.

Main Methods:

High-energy planetary milling to achieve controlled nanocrystalline domain sizes.
Characterization using multiple powder diffraction instruments (laboratory and synchrotron).
Application of various data analysis techniques including Williamson-Hall, whole powder pattern modeling, and Rietveld refinement.

Main Results:

Homogeneous nanocrystalline domain sizes of 10(2) nm with size dispersion of 5(1) nm.
High dislocation density of approximately 2.90(2)×10^16 m^-2.
Demonstrated suitability for modeling diffraction peak profiles and analyzing diffuse scattering.

Conclusions:

The developed Fe-1.8%Cr steel powder is a stable, easy-to-handle, and cost-effective reference material.
It is highly effective for testing and validating diverse powder diffraction data analysis methodologies.
The material serves as a valuable tool for advancing quantitative phase analysis and materials characterization.