HIGH-TEMPERATURE CORROSION RESISTANCE OF Fe/Cr COA TING

A kind of Fe/Cr cored wire for thermal spray was made,and with arc wire spray technique,high-temperature corrosion resistant coatings were prepared.The microstructure,corrosion dynamics and high-temperature corrosion resistance of the coating produced by arc spray were analyzed by using modern testing techniques,such as light microscopy technique,scanning electron microscopy (SEM),X-ray diffractometry (XRD),etc.The coatings had high density.The Cr2O3 and spinel oxide formed in the coating could effectively restrain corrosion,so the Fe/Cr coatings had excellent high temperature corrosion resistance.