Comparison of Surface and Bulk Elastic Properties Using Synchrotron Radiation Diffraction

Article type: Research Article

Authors: Lavelle, B. | Vendier, L. | Guiraud, L.

Affiliations: CEMES, 29 Rue Jeanne Marvig. 31055 Toulouse, France

Note: [] Corresponding author.

Abstract: In order to compare bulk and surface elastic coefficients, transmission and reflection measurements have been performed using synchrotron radiation. A pure Ni sample submitted to different levels of stress has been studied. The spectral analysis of the diffracted beam allows us to determine the strain for a given crystalline plane, with a precision in the range of goniometric X-ray analysis. From the strain Mohr circle and the sin2 Ψ law, the elastic characteristics for each studied crystalline plane can be deduced. We find significant differences between bulk and surface elastic coefficients.

Keywords: Transmission and reflection, Synchrotron radiation, Elastic constants, Diffracted beam

DOI: 10.1080/10238160108200157

Journal: Journal of Neutron Research, vol. 9, no. 2-4, pp. 313-317, 2001