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The X-ray scanning apparatus (XSA)

1987

Prototype of an XSA with energy-dispersive diffraction
 
R.A. Schwarzer: Proc.12th ICXOM, Cracow 1989, 205-208 

1996

New setup with a digital x-y specimen stage on a Huber goniometer.
 
R.A. Schwarzer and M. Wehrhahn: Proc. ICOTOM-11 (1996) 176-181 

1998

Last version based on a Philips X'Pert MRD goniometer with open Eulerian cradle:
A.H. Fischer and R.A. Schwarzer: Materials Science Forum 273-275(1998) 255-262
A.H. Fischer, D. Weihrauch and R.A. Schwarzer: ibid. 263-270
A.H. Fischer and R.A. Schwarzer: ibid. 673-678
R.A. Schwarzer and A.H. Fischer: Proc. ICOTOM-12 (1999) 204-210

R.A. Schwarzer: Texture mapping by scanning X-ray diffraction and related methods. pp. 50-65 in: A.K. Singh (ed.): Advanced X-ray Techniques in Research and Industry.
IOS Press, Amsterdam, The Netherlands, 2005    ISBN: 1-58603-537-1

D. Rammlmair, M. Wilke, K. Rickers, R.A. Schwarzer, A. Möller and A. Wittenberg: Chapt. 7.6, pp. 640-687 in: B. Beckhoff, B. Kannegiesser, N. Langhoff, R. Wedell and H. Wolff (eds.): Handbook of Practical X-Ray Fluorescence Analysis.
Springer-Verlag Berlin Heidelberg, 2006    ISBN 3-540-28603-9

Download    A.H. Fischer    
Ortsaufgelöste Polfigurmessung, Texturkartographie und Mikro-Fluoreszenzanalyse
PhD Thesis, University of Technology Clausthal, 1998

 

Main features are:
+ Acquisition of X-ray pole-figures from selected areas (spatial resolution ~ 0.1 mm)
+ Mapping of crystal t exture,lattice strain and element distributions
+ Enables a high spatial resolution 30-50 µm;  strain resolution Da/a >= 10-4 

 

     

The principles of the X-ray scanning apparatus

 

 The principles of texture topography and lattice strain mapping
based on energy dispersive X-ray diffraction.

The X-ray scanning apparatus (XSA)

 
Energy-dispersive X-ray diffraction spectra obtained from textured aluminum.

The setup of the X-ray scanning apparatus (XSA)

 

    View of the X-ray scanning apparatus

     Application 1 of the X-ray scanning apparatus (XSA)

 

The sample is a Chinese 1 Fen coin (top left).

Its surface has been polished to a mirror before measurement. The experimental pole figures (center) show a typical deformation texture of rolled aluminum. In the texture map (bottom right,7150 measured points,as seen in the light2 of pole P = (30°, 198.5°)on the 111 global pole figure, local differences in plastic deformation from coining are clearly visible.

Application 2 of the X-ray scanning apparatus (XSA)

 

 


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