Effect of Iron Ion on Corrosion Behavior of Inconel 625 in High-Temperature Water

The corrosion behavior of an ultralow iron nickel-based alloy Inconel 625 under high-temperature water has been evaluated. The results show that surface oxidation and pitting were the principal corrosion mechanisms of Inconel 625 during the initial immersion period. The surface layer of the oxide fi...

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Detalles Bibliográficos
Autores principales: Zhou, Huiling, Chen, Yipeng, Sui, Yi, Lv, Yunfei, Zhu, Zhiyuan, Yang, Lanlan, He, Zhen, Li, Chengtao, Fang, Kewei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2020
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599422/
https://www.ncbi.nlm.nih.gov/pubmed/33149799
http://dx.doi.org/10.1155/2020/9130362
Descripción
Sumario:The corrosion behavior of an ultralow iron nickel-based alloy Inconel 625 under high-temperature water has been evaluated. The results show that surface oxidation and pitting were the principal corrosion mechanisms of Inconel 625 during the initial immersion period. The surface layer of the oxide film is first Ni-enriched and then Fe-enriched as immersion time increases. The iron ions dissolved from the autoclave could lead to the formation of NiFe(2)O(4) and have a great influence on the oxidation behavior of Inconel 625. The oxides nucleated by solid-state reactions with selective dissolution of Fe and Ni and then grew up through precipitation of cations from solution.

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