所属单位：材料科学与技术学院
发表刊物：JOURNAL OF ALLOYS AND COMPOUNDS
关键字：Alkaline etching Superhydrophobic surface Adhesion force Corrosion resistance
摘要：In this work, a simple alkaline etching method was presented to fabricate superhydrophobic surfaces. X-Ray Diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and atomic force microscope (AFM) were utilized to characterize the surfaces. The morphology of superhydrophobic surfaces shows hierarchical structures and the corresponding water contact angles (WCA) are more than 155 inverted perpendicular. The adhesion force between the water droplets and the surfaces were discussed in detail, the specimen etching for 40 min in NaOH solution shows the lowest adhesion. The applications of these superhydrophobic surfaces were exploited. For instance, the superhydrophobic surface with high adhesion can be used in drug delivery. In addition, the self-cleaning property of the superhydrophobic surface with low adhesion was also tested by applying nano-silica powder as dust on the surfaces. Importantly, the superhydrophobic surfaces show excellent anti-corrosion performance with an extremely low corrosion current density of 2.748 x 10(-9) A/cm(2), and the anti-corrosion mechanism was discussed comprehensively. The present method can also be used to fabricate large-scaled superhydrophobic surfaces and expand applications of metal materials. (C) 2017 Elsevier B.V. All rights reserved.
ISSN号：0925-8388
是否译文：否
发表时间：2017-05-15
合写作者：Xiang, Tengfei,Zhang, Manxin,Zheng, Shunli,Ding, Shibing,王晶,Dong, Chundong,杨玲
通讯作者：李澄
发表时间：2017-05-15