用优化的化学蚀刻工艺在不锈钢表面构建超疏水结构

IF 1.5 4区材料科学 Q3 ENGINEERING, MECHANICAL

Journal of Engineering Materials and Technology-transactions of The Asme Pub Date : 2021-07-16 DOI:10.1115/1.4051575

Huixiang Hu, X. Hong, Yan Gao

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引用次数: 0

摘要

奥氏体不锈钢因其优异的耐腐蚀性，在工业和日常生活中被广泛应用于工程材料。在不锈钢上构建超疏水结构可以赋予其特殊的润湿性能，为其应用开辟了新的途径。在本研究中，不锈钢板首先在低浓度40 wt%的氢氟酸溶液中蚀刻，并在2 h的短时间内获得微纳结构，然后在肉豆酱酸中修饰表面以实现超疏水性。该钢表面的超疏水结构具有166°的高接触角(CA)，良好的自清洁性能，与原钢相比，其耐腐蚀性大大提高。同时，通过砂纸磨损试验评价其耐磨性，超疏水结构在1000粒砂纸上，在3.2 kPa压力下移动125 cm后仍保持其性能。

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The Construction of Superhydrophobic Structure on Stainless Steel by an Optimized Chemical Etching Technics

Austenitic stainless steel is a widely used engineering material in industry and daily life due to its excellent corrosion resistance. The construction of superhydrophobic structure on stainless steel can endow it with special wetting properties and open up new paths for its application. In this study, stainless steel plate was first etched in a hydrofluoric acid solution with a low concentration of 40 wt%, and a micro-nano structure was obtained in a short time of 2 h. The surface was then modified in myristic acid to achieve superhydrophobicity. The superhydrophobic structure on the steel showed a high contact angle (CA) of 166 deg, excellent self-cleaning performance, and greatly improved corrosion resistance compared with the original counterpart. Meanwhile, its wear durability was evaluated by sandpaper abrasion test and the superhydrophobic structure maintained its property after moving 125 cm on the 1000-grit sandpaper under a pressure of 3.2 kPa.

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来源期刊

Journal of Engineering Materials and Technology-transactions of The Asme 工程技术-材料科学：综合

CiteScore

3.00

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships