Influence of Surface Roughness on Evaluation of Stress Gradients in Coatings

Andrey Benediktovich; Hugues Guerault; Ilya Feranchuk; V. Uglov; Alex Ulyanenkov

doi:10.4028/www.scientific.net/MSF.681.121

Paper Titles

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Neutron Stress Measurement of Coarse Crystal Grain in Aluminium Casting Alloy
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Thin Film Stress and Texture Analysis at the MCX Synchrotron Radiation Beamline at ELETTRA
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Influence of Surface Roughness on Evaluation of Stress Gradients in Coatings
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Thermal Residual Stress Relaxation in Sputtered ZnO Film on (100) Si Substrate Studied In Situ by Synchrotron X-Ray Diffraction
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Residual Stresses and Strength of Hard Chromium Coatings
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Thickness Effect on Microstructure and Residual Stress of Annealed Copper Thin Films
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Evaluation of Arc Evaporated Coatings on Rounded Surfaces and Sharp Edges
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HomeMaterials Science ForumMaterials Science Forum Vol. 681Influence of Surface Roughness on Evaluation of...

Influence of Surface Roughness on Evaluation of Stress Gradients in Coatings

Abstract:

Roughness influence on the residual stress gradient evaluation in the case of a grazing incidence X-ray diffraction setup is considered. In this geometry the surface roughness changes essentially the X-ray wave fields of the transmitted and diffracted beams inside the coatings and subsurface regions of bulk samples, and thus influences the refractive properties of the investigated sample area. In turn, the change in the refraction index enforces the re-scale of the informational depth and, consequently, the evaluated stress depth profile. The diffracted amplitude from the crystalline grain located beneath the surface is calculated. The surface roughness is shown to contribute into reconstruction of the real stress gradient profile of the coating.

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Periodical:

Materials Science Forum (Volume 681)

Pages:

121-126

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.681.121

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Online since:

March 2011

Authors:

Andrey Benediktovich, Hugues Guerault, Ilya Feranchuk, V. Uglov, Alex Ulyanenkov

Keywords:

GIXRD, Residual Stress Gradient, Roughness

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