Abstract Electrochemical analysis, XPS, and ToF-SIMS are combined to characterize the passive properties of 254SMO stainless steel in the simulated condensates after flue gas desulfurization at different temperatures. Increase in condensate temperature causes the enhanced transpassive dissolution and surface deterioration as well as the involvement of oxygen reduction. Solution deaeration counteracts with the reaction rate acceleration, yielding an invariable donor density from 40 to 60 oC. Dissolution and precipitation of Fe and oxidation of Mo are facilitated, resulting in the mixed Cr(III)-Fe(III)-Mo(VI/IV) oxide/hydroxide surface layer and the strengthened enrichment of oxidized Cr and oxidized Mo at high temperatures.

中文翻译：

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通过电化学分析、XPS 和 ToF-SIMS 表征 254SMO 不锈钢在模拟脱硫烟气冷凝物中的钝化特性

摘要 结合电化学分析、XPS 和 ToF-SIMS 来表征 254SMO 不锈钢在不同温度下烟气脱硫后模拟冷凝物中的钝化特性。冷凝液温度的升高导致增强的跨被动溶解和表面劣化以及氧还原的参与。溶液脱气与反应速率加速相抵消，在 4​​0 到 60 oC 之间产生恒定的供体密度。促进Fe的溶解沉淀和Mo的氧化，形成混合Cr(III)-Fe(III)-Mo(VI/IV)氧化物/氢氧化物表层，高温下氧化Cr和氧化Mo强化富集.