Analysis of the Impact of Wear Characteristics of Electrical Fittings on Corrosion in Different Corrosive Environments

ZHANG Peijun; ZHOU Longde; MA Qunkai; QIU Weixing

doi:10.7643/issn.1672-9242.2025.06.010

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Equipment Environmental Engineering ›› 2025, Vol. 22 ›› Issue (6) : 86-92. DOI: 10.7643/issn.1672-9242.2025.06.010

Ships and Marine Engineering Equipment

Analysis of the Impact of Wear Characteristics of Electrical Fittings on Corrosion in Different Corrosive Environments

ZHANG Peijun¹, ZHOU Longde², MA Qunkai³, QIU Weixing⁴

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Abstract

The work aims to investigate the impact of different wear amounts of electrical fittings on the corrosion rate and products in marine and industrial atmospheres. Environmental simulation tests were conducted to simulate the marine corrosion environment, the industrial corrosion environment, and the environment of fitting wear, and to study the impact of different wear amounts on the corrosion patterns in marine and industrial atmospheres, clarifying the mechanism of wear-corrosion failure. In the marine atmosphere environment, under the condition of corrosion for 120 hours, the weight loss of the sample without wear was 0.070 2 g, and the corrosion rate was 0.300 μm/h; the weight loss of the sample with wear for 900 seconds was 0.081 3 g, and the corrosion rate was 0.343 μm/h; the weight loss of the corrosion sample with wear for 1 800 seconds was 0.087 3 g, and the corrosion rate was 0.374 μm/h, with the corrosion products being α-FeOOH, γ-FeOOH, β-FeOOH, Fe₂O₃ and Fe₃O₄. In the industrial atmosphere environment, under the condition of corrosion for 120 hours, the weight loss of the sample without wear was 0.071 3 g, and the corrosion rate was 0.305 μm/h; the weight loss of the sample with wear for 900 seconds was 0.084 9 g, and the corrosion rate was 0.355 μm/h; the weight loss of the corrosion sample with wear for 1 800 seconds was 0.092 4 g, and the corrosion rate was 0.396 μm/h, with the corrosion products being FeSO₄ and FeOOH. The corrosion rate in the industrial atmosphere environment is faster than that in the marine atmosphere environment. The corrosion products in both environments are preferentially generated at defects such as grooves and peeling pits, and gradually change from point corrosion to uniform corrosion with the increase of time.

Key words

marine atmosphere environment / industrial atmosphere environment / electrical fittings / wear / corrosion behavior / failure mechanism

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ZHANG Peijun, ZHOU Longde, MA Qunkai, QIU Weixing. Analysis of the Impact of Wear Characteristics of Electrical Fittings on Corrosion in Different Corrosive Environments[J]. Equipment Environmental Engineering. 2025, 22(6): 86-92 https://doi.org/10.7643/issn.1672-9242.2025.06.010

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