Seawater Galvanic Corrosion Testing Methods and Applications for Sea-air Cross-medium Equipment

LIU Xulin; SUN Bin; PAN Ying; XIE Long; DU Wubin; SONG Boyuan

doi:10.7643/issn.1672-9242.2025.08.010

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Equipment Environmental Engineering ›› 2025, Vol. 22 ›› Issue (8) : 74-80. DOI: 10.7643/issn.1672-9242.2025.08.010

Weapons Equipment

Seawater Galvanic Corrosion Testing Methods and Applications for Sea-air Cross-medium Equipment

LIU Xulin, SUN Bin, PAN Ying, XIE Long, DU Wubin, SONG Boyuan

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Abstract

The work aims to conduct the complex marine environmental adaptability design for sea-air cross-medium equipment and validate the design through environmental testing. To address the long-term repeated seawater immersion environment faced by sea-air cross-medium equipment, a natural test method with alternating wet-dry surface seawater corrosion was designed. Six different coating schemes were proposed and compared through 90-day natural surface seawater exposure tests. By analyzing the appearance, glossiness, adhesion, low-frequency impedance modulus, and other parameters of the post-test sample, the fouling-release protective coating scheme was determined as the optimal. The designed test sample connection method effectively simulates actual equipment conditions, visually demonstrating electrochemical corrosion between different materials. The alternating wet-dry test method accelerates corrosion exposure, and the selected coating and process scheme provides valuable design ideas and methods for corrosion protection of future sea-air cross-medium equipment.

Key words

seawater corrosion / environmental test / cross-medium / surface seawater test / electrochemical corrosion / marine environmental adaptability

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LIU Xulin, SUN Bin, PAN Ying, XIE Long, DU Wubin, SONG Boyuan. Seawater Galvanic Corrosion Testing Methods and Applications for Sea-air Cross-medium Equipment[J]. Equipment Environmental Engineering. 2025, 22(8): 74-80 https://doi.org/10.7643/issn.1672-9242.2025.08.010

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