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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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(Na,K)2SO4沉积引起的纯Ni和M38G合金热腐蚀的电化学阻抗研究
, PP. 50-53
Keywords: Ni基合金,热腐蚀,电化学阻抗
Abstract:
采用电化学阻抗技术研究了涂有Na2SO4-K2SO4盐膜的纯Ni和Ni基高温合金M38G在900℃，空气气氛中的热腐蚀行为.结果表明，纯Ni发生快速腐蚀，其腐蚀电化学阻抗谱呈典型的扩散控制反应的特征；M38G合金在热腐蚀过程中由于形成了具有较好保护性的腐蚀产物层，其腐蚀电化学阻抗谱呈双容抗弧特征.提出了等效电路来解析电化学阻抗谱，并探讨了材料的腐蚀过程.
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