X-ray diffraction method for the investigation of contacts between solid surfaces.

H R Keymeulen; T Lackner; A Diaz; B D Patterson; J F van der Veen

doi:10.1107/s090904950501215x

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X-ray diffraction method for the investigation of contacts between solid surfaces.

H R Keymeulen·T Lackner·A Diaz·B D Patterson·J F van der Veen

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Abstract

A coherent X-ray scattering method for investigating the formation of the contact region between two solid surfaces is presented. Diffraction of X-rays from two crossed cylindrical quartz surfaces, coated with Cr and TiO(2), revealed a total contact area of 90 +/- 10 microm. In the so-called Hertz model for two surfaces in non-adhesive contact, this value is directly related to the displacement of the surfaces and the applied external force. Values of 40 +/- 3 nm for the displacement and 24 +/- 3 mN for the force are found. The method is also useful for studying liquids in confinement.

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Algorithms Chromium Computer Simulation Materials Testing Models, Chemical Quartz Spectrometry, X-Ray Emission Surface Properties Titanium X-Ray Diffraction Evaluation Study Journal Article

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H R Keymeulen, T Lackner, A Diaz, B D Patterson, J F van der Veen. 2005-06-15. X-ray diffraction method for the investigation of contacts between solid surfaces.. https://doi.org/10.1107/s090904950501215x

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