Synergic Effect of Shot Blasting and Deposit RE on Corrosion Behavior of TP304H steel in SO2-O2 at 923K |
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作者姓名: | LIXin-geng FUMin HEJa-wen |
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作者单位: | [1]ShandongElectricPowerResearchInstituteofChina,Jinan,China [2]StateKeyLaboratoryforMechanicalBehaviorofMaterials,Xi'anJiaotongUniversity,Xi'an,China [3]ShandongElectricPowerResearchInstituteofChina,Jinan,China//StateKeyLaboratoryforMechanicalBehaviorofMaterials,Xi'anJiaotongUniversity,Xi'an,China |
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摘 要: | The corrosion behavior of TP304H steel with combined treatment of shot blasting and electrophoresis deposited RE coating in 1%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 Fe2O3/Fe1-xS/Ni1-x/S to Cr2O3/FeCr2Sn/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.
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关 键 词: | TP304H钢 不锈刚 高温侵蚀 硫化 氧化 喷砂清理 稀土 |
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