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Fabrication of Hierarchical Patterned Surfaces Using a Functionalized CeO2-EPDM Composite for Crevice Corrosion
Simpy Sanyal1, Taeyong Kim1, Ramachandran Chelliah2,3,4
1Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
ACS Omega
|November 21, 2022
Summary
New slippery lubricant-infused porous surfaces (SLIPS) coatings prevent insulator corrosion without damaging etching. This innovation enhances the reliability of power utility transmission lines, especially in harsh environments.
Area of Science:
- Materials Science
- Corrosion Engineering
- Surface Chemistry
Background:
- Crevice corrosion causes significant insulator failure in transmission lines, impacting power utility reliability.
- Conventional methods for creating slippery lubricant-infused porous surfaces (SLIPS) on insulators involve etching, which can compromise mechanical integrity.
- Tropical and coastal environments exacerbate electrochemical and biochemical corrosion of insulators.
Purpose of the Study:
- To develop a sustainable and resilient SLIPS coating for insulators to prevent crevice corrosion.
- To propose a novel method for fabricating SLIPS without chemical or physical etching.
- To enhance the longevity and performance of power transmission line insulators.
Main Methods:
- Fabrication of hierarchical patterned textured surfaces on insulator materials.
- Application of a novel SLIPS coating without employing physical or chemical etching techniques.
- Evaluation of antiadhesion, hydrophobicity, and crevice corrosion resistance under various environmental conditions.
Main Results:
- The proposed SLIPS coating demonstrated 99% antiadhesion against mixed bacterial strains.
- Superior hydrophobicity was achieved with a contact angle of 160° and contact angle hysteresis of 4°.
- Excellent crevice corrosion resistance was observed at elevated temperatures (25-75 °C) and humidity.
Conclusions:
- A novel, etching-free method for creating resilient SLIPS coatings on insulators has been developed.
- The developed SLIPS coating offers significant improvements in antiadhesion, hydrophobicity, and corrosion resistance.
- This approach provides a sustainable pathway for enhancing the reliability of power utility insulators.
