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VACUUM ›› 2019, Vol. 56 ›› Issue (6): 30-35.doi: 10.13385/j.cnki.vacuum.2019.06.06

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Fabrication and Properties of Robust Superhydrophobic F-DLC Coatings

WU Zhong-can, LIU Liang-liang, TANG Wei; YANG Chao, MA Zheng-yong   

  1. School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
  • Received:2019-08-19 Online:2019-11-25 Published:2019-12-03

Abstract: Superhydrophobic surfaces have possible crucial applications in self-cleaning, anti-icing and water drag reduction in water due to its unique wetting properties, which thus become eye-catching in recent years. However, most superhydrophobic surfaces are achieved by modification of organic materials with small surface energy, resulting in poor performances at high temperature, aging and tribology fields. In this paper, we present a robust superhydrophobic surface constructed by a special surface texture and a F-DLC modification layer. It realizes a water contact angle (WCA) of 152°, and the high temperature resistance, aging resistance and wear resistance are studied. The results show that the coating maintains the superhydrophobic properties after exposing to sunlight of 120 days and high temperature up to 350 ℃. After the wear testing against to 304 stainless steel for 20000 cycles, a high WCA more than 130° can still be obtained. The results suggest that the coating shows excellent robustness in high temperature, aging and wear, which promises the durable applications in aerospace, marine equipment and other engineering fields.

Key words: superhydrophobic, laser etching, F-DLC, wear resistance, stability

CLC Number: 

  • TG174.453
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