Microstructural characteristics and high-temperature oxidation resistance of a double-glow plasma-chromized surface layer on TiAl intermetallics

A chromized layer was prepared on the alloy surface of TiAl intermetallics through using double-glow plasma alloying. The surface morphology, microstructure, and phase composition of the chromized layer before and after oxidation were observed by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction. The cyclic oxidation behavior of the chromized layer at 850 °C was analyzed. Results demonstrated that the chromized...