Effects of the Second Anodization Parameters on the Hydrophobicity and Anti-Icing Properties of Al Surface with Composite Nanopore Structure
Author:
Li Bo12, Bai Jie12, Yang Liuqing12, Zhang Lusong12, Dai Xu3, Zhang Cheng4ORCID, Hua Xujiang4, Zhu Tao4, Xiang Huiying4, Liao Ruijin3, Yuan Yuan4ORCID
Affiliation:
1. Institute of Electric Power Science of Guizhou Power Grid Co., Ltd., Guiyang 550002, China 2. China Southern Power Grid Laboratory of Anti-Icing and Disaster Reduction, Liupanshui 553002, China 3. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China 4. School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Abstract
Icing on transmission lines often causes potential electric damage in power systems. Superhydrophobic anodized Al conductors have been proposed to have good anti-icing properties. In this study, superhydrophobic anodized Al conductors with composite nanopore structures were prepared by a two-step anodization. The microstructure, hydrophobicity, and anti-icing properties of composite nanopore structures were compared and studied. The optimal preparation parameter was determined as a current density of 0.04375 A/cm2 and anodization time of 15 min. Compared with the bare substrate, the optimal anodized Al surface of the composite nanopore structures show excellent hydrophobic and anti-icing properties, including a contact angle of 173°, a contact angle hysteresis of 0.122°, an ice adhesion strength of 0.71 kPa, and a glaze icing weight of 0.1 g after the 8 h. Therefore, the prepared anodized Al surface of composite nanopore structures with good anti-icing properties has profound application potential for overhead transmission lines.
Funder
Electric Power Research Institute of Guizhou Power Grid Co., Ltd., China
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
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