Search results for "Mechanical anchoring"

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Comportement en fatigue thermomécanique à haute température d’un système barrière thermique texturé par laser

2020

In service life of Thermal Barrier Coating (TBC) systems for blade applications can be limited by the top-coat (TC) spallation under thermo-mechanical fatigue (TMF) loadings. To improve its TMF life, laser texturing at the bond-coat/top coat interface in the CMSX-4 Plus / γ-γ’ BC/ EB-PVD TC system has been investigated.Thanks to the study of the laser-matter interaction, it seems that the different Ni-based single crystal superalloys have similar laser ablation behaviors and they present almost no sub-surface damage after ablation. Nevertheless, the formation of melted matter near created cavities, possibly recrystallized, is often observed.Different patterns (holes, lines, grids) have been…

[SPI.OTHER]Engineering Sciences [physics]/Other[CHIM.MATE] Chemical Sciences/Material chemistryAncrage mécanique[SPI.OTHER] Engineering Sciences [physics]/OtherSuperalloySuperalliageLaser texturing[CHIM.MATE]Chemical Sciences/Material chemistryThermal barrier coatingDurabilityThermomechanical fatigueTexturation laserBarrière thermiqueMechanical anchoringFatigue thermomécaniqueDurabilité
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