Effect of Mo and Sn co-regulation on low alloy steel corrosion in tropical marine atmosphere

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY npj Materials Degradation Pub Date : 2024-09-03 DOI:10.1038/s41529-024-00507-0

Meihui Sun, Xingyu Xiao, Xuexu Xu, Jiangwen Li, Tan Zhao, Li Gong, Cuiwei Du, Xiaogang Li

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Abstract

The influence of co-regulating Mo and Sn on the corrosion resistance of low alloy steel in tropical marine atmospheric was investigated. The combined addition of Mo and Sn has been found to significantly improve the corrosion resistance of low alloy steel, augmenting the protective capabilities of the rust layer. This combined addition promotes the formation of protective compounds like α-FeOOH and FeCr2O4 within the alloy rust layer. Furthermore, it facilitates the conversion of Cr, Ni and Cu into corrosion-resistant oxides such as Cr2O3, NiFe2O4 and CuO, thereby enhancing the density of the rust layer. Additionally, as corrosion progresses over time, higher levels of Sn addition lead to increased Sn content within the inner rust layer, consequently bolstering the protective qualities of the rust layer. This comprehensive understanding sheds light on the synergistic effects of Mo and Sn in fortifying the corrosion resistance of low alloy steel, offering insights for the development of advanced corrosion-resistant materials in marine environments.

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钼和锡共同调节对热带海洋大气中低合金钢腐蚀的影响

研究了在热带海洋大气中共同调节 Mo 和 Sn 对低合金钢耐腐蚀性的影响。研究发现，Mo 和 Sn 的联合添加能显著提高低合金钢的耐腐蚀性，增强锈层的保护能力。这种联合添加可促进合金锈层中α-FeOOH 和 FeCr2O4 等保护性化合物的形成。此外，它还有助于将 Cr、Ni 和 Cu 转化为 Cr2O3、NiFe2O4 和 CuO 等耐腐蚀氧化物，从而提高锈层的密度。此外，随着腐蚀时间的推移，锡添加量的增加会导致内锈层中锡含量的增加，从而提高锈层的保护质量。这种全面的认识揭示了 Mo 和 Sn 在增强低合金钢耐腐蚀性方面的协同作用，为开发海洋环境中的先进耐腐蚀材料提供了启示。

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来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies