Microstructure and Erosion behavior at Elevated Temperature of Thermal Sprayed Fe-Al/WC Coating

摘要

A Fe-Al/WC composite coating was fabricated by using high velocity arc spraying (HVAS) and cored wire.The elevated temperature erosion behaviors of the coating were investigated with a grit blasting type erosion tester.The coating microstructure and eroded surface morphologies were analyzed by energy dispersion spectroscope (EDS),X-ray diffraction (XRD),scanning electron microscope (SEM),transmission electron microscope (TEM) and image analyzer.The effects of incidence angle and test temperature on the erosion behavior were determined.