J4 ›› 2016, Vol. 13 ›› Issue (4): 622-630.doi: 10.1016/S1672-6529(16)60333-5

• 论文 • 上一篇    下一篇

A Simple Method for Fabrication of Bionic Superhydrophobic Zinc Coating with Crater-like Structures on Steel Substrate

Hao Li, Sirong Yu, Xiangxiang Han, Shanbao Zhang, Yan Zhao   

  1. College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
  • 收稿日期:2016-03-10 修回日期:2016-09-10 出版日期:2016-10-10 发布日期:2016-10-10
  • 通讯作者: Sirong Yu E-mail:yusrchina@163.com
  • 作者简介:Hao Li, Sirong Yu, Xiangxiang Han, Shanbao Zhang, Yan Zhao

A Simple Method for Fabrication of Bionic Superhydrophobic Zinc Coating with Crater-like Structures on Steel Substrate

Hao Li, Sirong Yu, Xiangxiang Han, Shanbao Zhang, Yan Zhao   

  1. College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
  • Received:2016-03-10 Revised:2016-09-10 Online:2016-10-10 Published:2016-10-10
  • Contact: Sirong Yu E-mail:yusrchina@163.com
  • About author:Hao Li, Sirong Yu, Xiangxiang Han, Shanbao Zhang, Yan Zhao

摘要:

Surface modification with superhydrophobicity is a popular and challenging research field on metals. In this work, a simple method was used to fabricate a bionic superhydrophobic zinc coating with crater-like structures on pipeline steel surface. This method involved electrodeposition of zinc coating and chemical reaction in perfluorooctanoic acid ethanol solution. The per-fluorooctanoic acid with low surface free energy was not only used for chemical etching but also used for fluorinated modification. The contact angle of water on such superhydrophobic zinc coating was up to 154.21?, and the sliding angle was less than 5? due to the micro crater-like structures and the low surface free energy. Moreover, the prepared superhydrophobic zinc coating demonstrated excellent self-cleaning property and great stability at room temperature, and the contact angle of water on this coating remained stable after storage in air for more than 80 days. This superhydrophobic zinc coating will open much wider applications of electrodeposition metal coating, including self-cleaning property, and can be easily extended to other metals.

关键词: bionic surface, superhydrophobic coating, electrodeposition, crater-like structure, self-cleaning

Abstract:

Surface modification with superhydrophobicity is a popular and challenging research field on metals. In this work, a simple method was used to fabricate a bionic superhydrophobic zinc coating with crater-like structures on pipeline steel surface. This method involved electrodeposition of zinc coating and chemical reaction in perfluorooctanoic acid ethanol solution. The per-fluorooctanoic acid with low surface free energy was not only used for chemical etching but also used for fluorinated modification. The contact angle of water on such superhydrophobic zinc coating was up to 154.21?, and the sliding angle was less than 5? due to the micro crater-like structures and the low surface free energy. Moreover, the prepared superhydrophobic zinc coating demonstrated excellent self-cleaning property and great stability at room temperature, and the contact angle of water on this coating remained stable after storage in air for more than 80 days. This superhydrophobic zinc coating will open much wider applications of electrodeposition metal coating, including self-cleaning property, and can be easily extended to other metals.

Key words: bionic surface, superhydrophobic coating, electrodeposition, crater-like structure, self-cleaning