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| Superhydrophobic coating on heat-resistant steel surface fabricated by a facile method |
| Bo Jiang1,2 . Gui-jie Li1,2 . Hui-qun Liu1,2 . Dan-qing Yi1,2 . Ying Zhang1,2 . Ren-hao Xue 1,2 . Quan Wen3 . Zhi-yuan Liu3 . Liang Ning4 . Xian-ming Wang4 |
1 School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China
2 Key Laboratory for Nonferrous Materials Science and Engineering, Education Ministry, Central South University, Changsha 410083, Hunan, China
3 China Aviation Power Machinery Research Institute, Zhuzhou 412002, Hunan, China
4 Marine Chemical Research Institute Co., Ltd., Qingdao 266071, Shandong, China |
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Abstract Industrial application of superhydrophobic surfaces is often hindered by complicated process and sophisticated machines. A facile wet etching method (sandblast, HCl and sandblast/HCl) with vapor deposition of PFDS (1H, 1H, 2H, 2H-per.uorodecyltriethoxysilane) was applied to fabricate superhydrophobic surface ofheat-resistant steel used for vane. The coating component, surface morphology and surface roughness parameters of sample were observed by attenuated total re.ectance Fourier transform infrared spectroscopy, scanning electron microscopy and atomic force microscopy. Static water contact angle (WCA) of samples with and without PFDS coating was measured by contact angle goniometer. The results showed that WCA values of polished, sandblast, HCl and sandblast/HCl-etched samples are 98.,97., 100. and 101., respectively, and increase to 112., 148., 151.and 154.after vapor deposition of PFDS. The sandblast/HCl-etched sample with PFDS coating shows higher superhydrophobicity because of very large surface roughness and lotus protrusion-like structure. The superhydrophobicity of this fabricated surface has no obvious change after 38 cycles of the .lm adhesion test, indicating excellent durability.
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Received: 07 July 2017
Published: 05 November 2018
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LIU. Superhydrophobic coating on heat-resistant steel surface fabricated by a facile method[J]. Journal of Iron and Steel Research International, 2018, 25(9): 975-983.
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2018, Vol. 25 
