A NOVEL MODEL FOR THE RELATIONSHIP BETWEEN THE HEALING TIME OF THE INERT FILM AND THE INCUBATION PERIOD OF LOCALIZED CORROSION

Minghan Zhao, Yi Ren, Dongxu Chen, Haodong Wu, Jing Li, Yanwen Zhou and Xiang Wang
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Minghan Zhao: School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China†State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute, AnGang Group, Anshan 114000, P. R. China
Yi Ren: ��State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Iron and Steel Research Institute, AnGang Group, Anshan 114000, P. R. China
Dongxu Chen: School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China
Haodong Wu: School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China
Jing Li: School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China
Yanwen Zhou: School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, P. R. China
Xiang Wang: ��CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China

Surface Review and Letters (SRL), 2025, vol. 32, issue 03, 1-8

Abstract: A model for the relationship between the healing time of the scratched diamond-like carbon (DLC) film and the localized corrosion incubation period of metal was established. Based on model calculations combined with experimental results, the scratched DLC film on 13Cr stainless steel was able to heal within 10–16h in NaCl solution with an adsorbent-type corrosion inhibitor. However, the localized corrosion incubation time was 30–40h. Healing of the scratched DLC film can be completed before localized corrosion occurs. This model provides a theoretical reference for the scratch-repassivation of inert films in corrosion inhibitors solutions.

Keywords: Simulation and modelling; diffusion; corrosion; chemical vapor deposition; thin films (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1142/S0218625X24501166

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