Neutron through-thickness stress measurements in coatings with high spatial resolution

Vladimir Luzin, Andrew Vackel, Alfredo Valarezo, Sanjay Sampath

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

18 Citas (Scopus)

Resumen

A great variety of techniques are nowadays used to spray coatings with different functionality and properties for the purpose of surface enhancement. Depending on application and design, these can be thermal (plasma or high-velocity oxy-fuel are the most widely used) and warm or cold spraying, which are known to generate considerable residual stresses. This stress is a function of the spaying process as well as the material and thickness of the coating-substrate system. The mechanical integrity of coatings is critical for certain applications, e.g. wear resistant and thermal-barrier coatings, hence residual stress control and mitigation are essential in preventing the coating’s mechanical failure, improving the coating’s performance and the its operational lifetime. Although hole drilling technique or x-ray diffraction combined with layer removal method can be applicable for stress measurements in coatings, the neutron diffraction stress analysis also provides an effective and efficient tool for non-destructive through-thickness stress measurements with a commensurately high resolution, down to 0.1-0.2 mm. The most recent results of neutron diffraction stress measurements in coating systems are presented herein.

Idioma originalInglés
Título de la publicación alojadaMechanical Stress Evaluation by Neutrons and Synchrotron Radiation VIII - 8th MECA SENS
EditoresThomas Holden, Tamas Ungar, Thomas Buslaps, Thilo Pirling
EditorialTrans Tech Publications Ltd
Páginas165-173
Número de páginas9
ISBN (versión impresa)9783038356356
DOI
EstadoPublicada - 2017
Evento8th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS 2015 - Grenoble, Francia
Duración: 28 sep. 20152 oct. 2015

Serie de la publicación

NombreMaterials Science Forum
Volumen905 MSF
ISSN (versión impresa)0255-5476
ISSN (versión digital)1662-9752

Conferencia

Conferencia8th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation, MECA SENS 2015
País/TerritorioFrancia
CiudadGrenoble
Período28/09/152/10/15

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