Abstract
Carbon steel is one of the most important and widely used structural materials, but preventing its corrosion remains a great challenge. Herein, a metal–organic framework film consisting of Zif-8 nanosheets array was prepared using a one-step in situ growth method. This coating film can effectively inhibit the corrosion behavior of low carbon steel in seawater, resulting in improved corrosion resistance (4010 Ω·cm−2) and low corrosion current density (23 μA·cm−2). After long-term immersion in seawater, no notable pitting corrosion was observed and the film integrity was well preserved, demonstrating the feasibility of Zif-8 film for anti-corrosion coating.
Highlights
IntroductionAs one of the most valuable industrial products, carbon steel-based materials have been used broadly in marine environments, such as in bridges, pipelines and ships [1–3]
Anti-Corrosion Performance forAs one of the most valuable industrial products, carbon steel-based materials have been used broadly in marine environments, such as in bridges, pipelines and ships [1–3].the corrosion behavior of carbon steel in seawater threatens public safety, and induces huge economic losses and environmental pollution [4]
The introduction of a passivation layer on the surface of carbon steel is one of the most promising approaches used to improve the corrosion resistance of carbon steel [1,4], which can effectively avoid its direct contact with a corrosive medium
Summary
As one of the most valuable industrial products, carbon steel-based materials have been used broadly in marine environments, such as in bridges, pipelines and ships [1–3]. Metal-organic frameworks (MOFs) [9], which are a type of organic–inorganic hybrid material, have received considerable interest due to their morphological controllability, good chemical stability, large surface area, low density, and high crystallinity. Based on these promising properties, MOFs have been used in various fields, such as gas separation [10], drug delivery [11], enzyme carriers [12], catalysis [13], batteries [14], etc. The poor adhesion to c onquer the continuous invasion of corrosive species is still not fully solved In this regard, the in situ growth of Zif-8 nanosheets array on carbon steel is demonstrated to efficiently prevent the penetration of water and halide ions into the surface of carbon steel. The present work provides a new approach to enhance the application of MOFs-based materials in metal-corrosion protection
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