Abstract
In this work, the local wear properties of cold-sprayed (CS) Ti-6Al-4V coatings were studied to evaluate their application for aeronautical components repair. Two different CS conditions were used, and one condition was also heat-treated. A thorough microstructural study was first done to correlate the microstructure with the wear properties. Then, microscratch tests were performed. The wear rates were calculated analytically, and this method was validated with confocal microscopy. Similar wear rates to that of the material to be repaired (substrate) were obtained for the CS coating sprayed at higher temperatures and for the heat-treated one. The wear resistance was related to the ability of the coating to plastically deform and thus, with the arrangements of different dislocations observed in the coatings.
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