超音速电弧喷涂FeCrAl涂层组织结构与抗氧化性能研究

In this paper , FeCrAl Coatings were prepared on 20G substrate by supersonic arc spraying technology. The specimens were analyzed by means of conventional X-ray diffraction (XRD), the micrograph of the sample analysis was performed using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) for elemental analysis and test the properties of oxidation resistance at 680℃.Results indicated that the FeCrAl coatings was consisted of cubic body-centered Fe-Cr solid solution and α-Fe phase, with a few CrO2 .The excellent oxidation resitant properties of FeCrAl Coatings was benefited from the element Cr , which formated the compact protective layer mainly consisted of Cr2O3.