Issue 5, 2022, Issue in Progress

Novel synthesis of a self-healing Ce based eco-friendly sealing coating to mitigate corrosion in insulators installed in industrial regions

Abstract

Overcoming hardware corrosion for high voltage insulators is a vital issue to prevent the sudden breakdown of insulators. The development of an efficient, economical, and eco-friendly anti-corrosion coating is essential to replace existing carcinogenic and toxic silicone-based coatings used by insulator industries. This article investigates the anticorrosion performance of a novel cerium-based sealing coating for insulator pins installed in highly corrosive (35 μm per year) industrial regions. The coating bath parameters were optimized to improve the self-healing, thermal, crack, and corrosion resistance of the coating. After immersion in a 60 000 ppm CeCl3·7H2O sealing coating bath for 60 minutes, a Ce-rich and dense protective coating (24.4 μm) is formed on the pin surface. The specimens immersed in a 60 000 ppm Ce sealing coating bath for 60 minutes show the lowest Icorr. The anticorrosion performance is enhanced by 95% for coated pins than non-coated ones. The electrochemical experiments, macroscopic and microscopic structural analysis confirm the anticorrosion performance of Ce-based sealing coatings for high voltage insulator pins. This work will facilitate a new branch of eco-friendly coatings for insulator and power industries.

Graphical abstract: Novel synthesis of a self-healing Ce based eco-friendly sealing coating to mitigate corrosion in insulators installed in industrial regions

Supplementary files

Article information

Article type
Paper
Submitted
09 Nov 2021
Accepted
04 Jan 2022
First published
19 Jan 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 2612-2621

Novel synthesis of a self-healing Ce based eco-friendly sealing coating to mitigate corrosion in insulators installed in industrial regions

S. Sanyal, T. Kim, M. Rabelo, D. P. Pham and J. Yi, RSC Adv., 2022, 12, 2612 DOI: 10.1039/D1RA08223J

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