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A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship

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Abstract

A low-cost method was used to fabricate superhydrophobic coatings on a macroscopic model ship and the drag-reducing effect was investigated at both low and high speed. Hierarchical structures of the superhydrophobic copper coatings were characterized by means of scanning electron microscopy(SEM) and X-ray diffraction(XRD). Drag coefficient tests on surfaces with different wettability(superhydrophilic, hydrophilic, hydrophobic and superhydrophobic surfaces) showed that the as-prepared superhydrophobic surface exhibited a high remarkable drag reduction of 81% at a low speed of 1 mm/s. In the drag-reducing tests with model ship, the superhydrophobic coatings also exhibited around 16% drag reduction at a velocity of 0.3 m/s.

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Correspondence to Wanyou Li or Shanshan Lyu.

Additional information

Supported by the Fundamental Research Funds of the Central Universities of China(No.HEUCFJ161003).

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Wang, Z., Zhang, S., Gao, S. et al. A Simple, Low-cost Method to Fabricate Drag-reducing Coatings on a Macroscopic Model Ship. Chem. Res. Chin. Univ. 34, 616–621 (2018). https://doi.org/10.1007/s40242-018-8032-2

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  • DOI: https://doi.org/10.1007/s40242-018-8032-2

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