不同C浓度FeNiCrAl双相合金在硼化和锂化高温水中的腐蚀行为

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-06-16 DOI:10.1016/j.corsci.2025.113115

Fangqiang Ning , Libo Zhang , Hong Yan , Hui Wang , Jia Liu , Ping Deng

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引用次数: 0

摘要

研究了FeNiCrAl双相合金在硼化和锂化高温水中的腐蚀行为以及添加C对其腐蚀行为的影响。Cr含量为22.5 wt%的α相上富Cr氧化膜（Cr2O3+FeCr2O4）比Cr含量为15.2 wt%的γ相上富Cr尖晶石氧化膜（FeCr2O4）具有更好的保护性能，从而导致α相上的富Cr氧化膜比γ相上的薄。从B2-NiAl相中析出一定量的Al3+，导致在α和γ相上形成大量富集Al的外氧化物颗粒。C的加入增加了α相和γ相的Cr含量，并通过增加其Cr含量增强了内氧化膜对γ相的保护性能，而对内氧化膜的组成和对α相的保护性能影响不大。讨论了FeNiCrAl双相合金的腐蚀机理和C的作用机理。

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Corrosion behavior of FeNiCrAl duplex alloys with different C concentrations in borated and lithiated high-temperature water

Corrosion behavior of FeNiCrAl duplex alloys in borated and lithiated high-temperature water and the effect of C addition on its corrosion behavior were investigated. The Cr-rich inner oxide film (Cr₂O₃+FeCr₂O₄) on α phase with 22.5 wt% Cr content exhibited superior protective properties compared to the Cr-rich spinel oxide film (FeCr₂O₄) on γ phase with 15.2 wt% Cr content, thereby resulting in a thinner inner oxide film on α phase than that on γ phase. The precipitation of amounts of Al³⁺ dissolved from B2-NiAl phase led to the formation of numerous outer oxide particles enriched in Al on α and γ phases. The C addition increased the Cr content of α and γ phase, and enhanced the protective properties of the inner oxide film on γ phase by increasing its Cr content, while had little effect on the composition and protective properties of the inner oxide film on α phase. The corrosion mechanism of FeNiCrAl duplex alloys and the effect mechanism of C addition is also discussed.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.