We report the results of the influence of acetylene and oxygen gas pressure on the\ncorrosion resistance of bronze-aluminum coatings deposited on a naval brass substrate by means\nof the thermal (flame) deposition process. The coatings were characterized by means of scanning\nelectronic microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD),\nX-ray fluorescence (XRF), and transmission electron microscopy (TEM). The corrosion tests were\ncarried out via Tafel and electrochemical impedance spectroscopy (EIS). In addition, some samples\nwere selected in order to investigate heat treatment and its effects on corrosion resistance. The results\nindicate that changes in the pressure and flow of the gas affects the composition, morphology,\nand physical properties of the coatings, and these effects have consequences for the behavior of the\ncoatings when they are immersed in corrosion environments. The collision speed of the particles\nwas identified as the most significant factor that influences the properties and the performance\nof the coating. The gas pressure modified the oxides and the porosity level, which improved the\ncorrosion resistance.
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