Fabrication and Properties of Superhydrophobic Colored Stainless Steel Surface for Decoration and Anti-Corrosion

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-09-02 DOI:10.3390/coatings14091117
Changfeng Fan, Xue Wang, Wei Wang, Dechao Meng, Xianghua Zhan, Xiaoli Yin, Yancong Liu
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引用次数: 0

Abstract

A colored superhydrophobic surface on a stainless steel substrate was achieved by means of high temperature oxidation combined with subsequent spraying modification by superhydrophobic nano-silica film. Comprehensive characterizations of the surface were performed in terms of color, morphology, composition, wettability, and corrosion resistance by optical microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), contact angle, potentiodynamic polarization, and electrochemical impedance spectroscopy measurement. At 400 °C, the surface was pale yellow, gradually turning yellow and then red as the temperature increased. At 700 °C and 800 °C, the surface colors were blue and dark brown, respectively. The samples with oxide films demonstrated lower contact angles, specifically 80.5° ± 2.5 at 400 °C, 79.1° ± 2.8 at 500 °C, and 75.6° ± 3.4 at 600 °C. The polarization resistance measured on the oxidized film formed at 600 °C exceeded 7.93 × 104 Ω·cm2. After spraying the treatment, these colorful surfaces exhibited superhydrophobicity, they were self-cleaning, and they satisfied anti-corrosion properties. The treatment performs as an excellent barrier and exhibits a high corrosion resistance of 4.68 × 106 Ω·cm2. The successful preparation of superhydrophobic colored surfaces offers the possibility of providing stainless steel with both decoration value and self-cleaning function simultaneously by our proposed chromium-free fabrication process.
用于装饰和防腐的超疏水彩色不锈钢表面的制作与性能
通过高温氧化和随后的超疏水纳米二氧化硅薄膜喷涂改性,在不锈钢基材上实现了彩色超疏水表面。通过光学显微镜、X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散光谱 (EDS)、接触角、电位极化和电化学阻抗光谱测量,对表面的颜色、形态、成分、润湿性和耐腐蚀性进行了综合表征。400 °C 时,表面呈淡黄色,随着温度的升高逐渐变黄,然后变红。在 700 °C 和 800 °C 时,表面颜色分别为蓝色和深褐色。带有氧化膜的样品接触角较低,400 °C 时为 80.5° ± 2.5,500 °C 时为 79.1° ± 2.8,600 °C 时为 75.6° ± 3.4。在 600 °C 时形成的氧化膜上测量到的极化电阻超过了 7.93 × 104 Ω-cm2。喷涂处理后,这些多彩表面表现出超疏水性、自洁性和抗腐蚀性。处理后的表面具有良好的阻隔性,耐腐蚀性高达 4.68 × 106 Ω-cm2。超疏水彩色表面的成功制备为我们提出的无铬制造工艺提供了可能性,使不锈钢同时具有装饰价值和自清洁功能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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