Research Progress on Corrosion Evaluation Methods for Metallic Materials in Marine Environments

HAO Jingrui; HU Yanping; CHEN Jinhu; WU Jianguo

doi:10.7643/issn.1672-9242.2026.07.016

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (7) : 161-172. DOI: 10.7643/issn.1672-9242.2026.07.016

Ships and Marine Engineering Equipment

Research Progress on Corrosion Evaluation Methods for Metallic Materials in Marine Environments

HAO Jingrui¹, HU Yanping², CHEN Jinhu², WU Jianguo¹

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Abstract

To meet the corrosion evaluation needs of marine engineering equipment, this paper reviews typical corrosion damage forms, evaluation indicators and testing methods for metallic materials. According to corrosion damage characteristics, the main hazards and engineering concerns of uniform corrosion, pitting corrosion, intergranular corrosion, crevice corrosion, stress corrosion cracking and erosion-corrosion are summarized. Key evaluation indicators such as overall thinning, local depth, crack characteristics and performance degradation are clarified. From the perspectives of damage degree, evolution trend and mechanical property degradation, the output information, applicability and limitations of weight loss measurement, cross-sectional observation, three-dimensional morphology measurement, image processing, electrochemical testing and mechanical testing are discussed. Combined with recent progress in nondestructive testing, in-situ monitoring, deep-learning-based image recognition and multi-source information fusion, an evaluation framework consisting of corrosion type identification, key indicator selection, testing method matching, hierarchical result interpretation and engineering-objective-oriented combination is proposed. This review provides a reference for corrosion condition assessment, characterization method selection, service risk judgment and result interpretation of marine engineering equipment.

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marine corrosion / metallic materials / localized corrosion / evaluation indicators / electrochemical testing / mechanical properties

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HAO Jingrui, HU Yanping, CHEN Jinhu, WU Jianguo. Research Progress on Corrosion Evaluation Methods for Metallic Materials in Marine Environments[J]. Equipment Environmental Engineering. 2026, 23(7): 161-172 https://doi.org/10.7643/issn.1672-9242.2026.07.016

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