Insights into the Self-Optimized Hydrophobicity of Cerium Oxide Surface under Impact Abrasive Wear

Abstract:

Cerium oxide (CeO₂) is one of potential candidates of hydrophobic coatings servicing in harsh environments. In this letter, abraded CeO₂ surface was prepared using sandblasting treatment to investigate the wetting mechanism under the condition of impact abrasive wear. The water contact angle (WCA) of the abraded surface increased from 62.8° to 93.7° after aging in ambient air for about 700 h. The hydrophobic self-optimisation mechanism of the abraded CeO₂ surface is due to the hierarchical structure formed during impact abrasive wear and the surface adsorption of airborne hydrocarbon, resulting the wetting state changed from “Wenzel state” to “Cassie-Baxter State”.

• Periodical: Solid State Phenomena (Volume 315)
• Pages: 109-113
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.315.109
• Online since: March 2021
• Authors: Zhao Qian Li*, Jie Wang, Teng Feng He, Jun Peng Liu, Dong Dong Hao, Xiang Hui Hou
• Keywords: Cerium Oxide, Hydrophobic, Self-Optimisation, Wettability, XPS

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