Abstract This study described the impact of carbonation on passivation of 2304 duplex stainless steel (DSS) in alkaline solutions simulating concrete pore environment. Also, the chloride-induced corrosion behavior and the pitting corrosion resistance of 2304 DSS were evaluated in carbonated solutions. It was highlighted that the electrochemical performance of 2304 DSS was remarkably affected by carbonation in terms of passivation capability, passive film properties (thickness, morphology and composition) and chloride-induced corrosion morphology. The degradation mechanism of carbonation on passivation of 2304 DSS in alkaline solutions was proposed, as well as the corrosion mechanism induced by combined carbonation and chlorides.

中文翻译：

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碳化降解对2304双相不锈钢在模拟混凝土孔隙溶液中电化学行为的影响

摘要 本研究描述了碳化对 2304 双相不锈钢 (DSS) 在模拟混凝土孔隙环境的碱性溶液中钝化的影响。此外，还评估了 2304 DSS 在碳酸溶液中的氯化物诱导腐蚀行为和耐点蚀性。强调了 2304 DSS 的电化学性能在钝化能力、钝化膜特性（厚度、形态和成分）和氯化物诱导腐蚀形态方面受碳化作用显着影响。提出了碳化对碱性溶液中2304 DSS钝化的降解机理，以及碳化和氯化物联合腐蚀的机理。