The preparation and corrosion resistance of superhydrophobic coating on Cu plate via two-step electrodeposition

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-12-22 DOI:10.1108/acmm-09-2023-2903

Zhengwei Song, Shengjian Zhang, Lifeng Ding, Xuejing Wu, Ning Long

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Abstract

Purpose

The purpose of this paper was prepared a Ni-based superhydrophobic coating on the surface of copper to enhence its corrosion resistance. The superhydrophobic coating (SHPC) has proven to be an effective surface treatment in corrosion protection. In this paper, a Ni-based SHPC was prepared on the surface of copper (Cu) to enhance its corrosion resistance.

Design/methodology/approach

The coating was prepared through a two-step electrodeposition process. The first step involves the formation of a micro-nano structure Ni layer formed by an electrodeposition process. Subsequently, the polysiloxane layer was deposited on the Ni surface to create an SHPC. The morphology, composition, structure, wettability and corrosion resistance of the coating were characterized and discussed.

Findings

The results show that the water contact angle of the as-prepared coating reaches 155.5°±1.0°. The corrosion current density (i_corr = 3.90 × 10⁻⁹ A·cm⁻²) decreased by three orders of magnitude compared to the substrate, whereas |Z|_{f = 0.01} _Hz (2.40 × 10⁶ Ω·cm²) increased by three orders of magnitude. It indicated that the prepared coating has excellent superhydrophobicity and high corrosion resistance, which can provide better protection for the substrate.

Originality/value

The prepared coating provides long-lasting protection for Cu and other metals and offers valuable data for developing SHPCs.

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两步电沉积法制备铜板超疏水涂层及其耐腐蚀性能

目的本文的目的是在铜表面制备一种镍基超疏水涂层，以增强其耐腐蚀性。超疏水涂层（SHPC）已被证明是一种有效的防腐蚀表面处理方法。本文在铜（Cu）表面制备了一种镍基 SHPC，以增强其耐腐蚀性。第一步是通过电沉积工艺形成微纳米结构的镍层。随后，在镍表面沉积聚硅氧烷层，形成 SHPC。结果表明，制备的涂层的水接触角达到 155.5°±1.0°。与基体相比，腐蚀电流密度（icorr = 3.90 × 10-9 A-cm-2）降低了三个数量级，而 |Z|f = 0.01 Hz (2.40 × 106 Ω-cm2)则增加了三个数量级。这表明制备的涂层具有优异的超疏水性和高耐腐蚀性，能为基底提供更好的保护。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.