6533b82efe1ef96bd1293132
RESEARCH PRODUCT
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subject
Materials science02 engineering and technologySurfaces and InterfacesGeneral Chemistryengineering.material021001 nanoscience & nanotechnologyCondensed Matter PhysicsSurfaces Coatings and FilmsCracking020303 mechanical engineering & transportsBrittleness0203 mechanical engineeringCoatingCatastrophic failurevisual_artCavitationMaterials Chemistryvisual_art.visual_art_mediumFracture (geology)engineeringCeramicComposite material0210 nano-technologyThermal sprayingdescription
Abstract The fatigue life of thermally sprayed Al2O3- and Cr2O3-based coatings has been studied under low-energy (0.7–5 mJ) impact conditions. A threshold impact energy and amount of repetitions the coatings can endure with said energy before catastrophic failure was obtained. The catastrophic failure was determined to occur when the fracture mode of the coating switched from brittle cone cracking to quasi-plastic radial cracking. The results are examined relative to the microstructural features along with other properties of the coatings - hardness and cavitation resistance. The experiment provided a new approach for a straightforward comparison of the micro-scale impact fatigue life of thermally sprayed coatings unachievable with previous methods.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-08-01 | Surface and Coatings Technology |