The corrosion behavior of TP304H steel with combined treatment of shot blasting and electrophoresis deposited RE coating in l%SO2+14%O2+85%Ar mixture gaseous has been studied at 923K for 150 hours. The results show th...The corrosion behavior of TP304H steel with combined treatment of shot blasting and electrophoresis deposited RE coating in l%SO2+14%O2+85%Ar mixture gaseous has been studied at 923K for 150 hours. The results show that both RE coating and shot blasting can improve the corrosion resistance of TP304H steel, and combined treatment has the best effect. Combined treatment reduces 50% mass gain, enhances the continuous and compactness of scale and changes the scale phase forms from FeaOs/Fe^S/Ni^/S to Cr2O3/FeCr2S4/Ni3_xS2. The synergistic effects of combined treatment on corrosion resistance and the effect of shot blasting on corrosion kinetics are discussed. Shot blasting increases the outward diffusion and surface concentration of Cr, Ce coating promotes the selective oxidation of Cr.展开更多
文摘The corrosion behavior of TP304H steel with combined treatment of shot blasting and electrophoresis deposited RE coating in l%SO2+14%O2+85%Ar mixture gaseous has been studied at 923K for 150 hours. The results show that both RE coating and shot blasting can improve the corrosion resistance of TP304H steel, and combined treatment has the best effect. Combined treatment reduces 50% mass gain, enhances the continuous and compactness of scale and changes the scale phase forms from FeaOs/Fe^S/Ni^/S to Cr2O3/FeCr2S4/Ni3_xS2. The synergistic effects of combined treatment on corrosion resistance and the effect of shot blasting on corrosion kinetics are discussed. Shot blasting increases the outward diffusion and surface concentration of Cr, Ce coating promotes the selective oxidation of Cr.
