镁合金表面耐腐蚀疏水复合膜的制备

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2022-09-02 DOI:10.1080/02670844.2022.2161762

Jiyuan Zhu, Chenxi Jia

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引用次数: 3

摘要

镁合金因其优异的性能而受到广泛关注，但其耐腐蚀性差阻碍了镁合金的应用。制备低成本、易于操作的高性能耐腐蚀膜的方法对镁合金的腐蚀防护至关重要。通过在AZ91D镁合金上直接合成沸石膜，提出了一种简单、高效、环保的制备方法。本研究探索了在AZ91D镁合金上一步合成多结构复合膜的方法。制备的薄膜表面具有致密的Mg（OH）2底层和K2Al2Si4O12·xH2O上层，具有多孔的支撑微观结构。与基体相比，硬脂酸改性样品表面的腐蚀电流降低了约三个数量级，缓蚀率达到99.96%，稳定的接触角约为125°。结果表明，制备的样品具有良好的耐腐蚀性和稳定的疏水性。

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Preparation of corrosion-resistant hydrophobic composite films on magnesium alloy

ABSTRACT Magnesium alloy has attracted wide attention for excellent properties but poor corrosion resistance hinders its application. The method of preparing high-performance corrosion-resistant films with low cost and easy operation is significantly crucial to the corrosion protection of magnesium alloy. By synthesizing zeolite film directly on AZ91D magnesium alloy, the work presented a simple, efficient and environmentally-friendly preparation method. In this study, a one-step synthesis method of multi-structure composite film on AZ91D magnesium alloy was explored. The prepared film surface had dense Mg(OH)2 bottom layer and K2Al2Si4O12·xH2O upper layer with porous support microstructure. Compared with the substrate, the corrosion current on the sample surface modified by stearic acid was reduced by about three orders of magnitude, and the corrosion inhibition rate reached 99.96% with a stable contact angle of about 125°. The results showed the excellent corrosion resistance and stable hydrophobicity of the prepared sample.

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.