在模拟压水堆一回路B+Li水和加Zn水中,采用极化曲线、阻抗谱(EIS)原位研究了温度(T)变化对国产核级316L不锈钢(316L SS)电化学腐蚀行为的影响.结果表明,7升高导致316L SS表面氧化膜的保护性能减弱.从低温到高温,316L SS表面膜结构由单层转变为双层,富Cr氧化层起到关键性的阻挡金属基体继续氧化的作用.与无Zn相比,加Zn后316L SS表面膜的耐蚀性增强,但生长机制不变.从氧化物溶解度和结构模型的角度讨论了316L SS在上述水溶液中表面氧化膜的形成机理.
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