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White-Beam X-Ray Sectional Topography of Anthracene Single Crystals Grown by Physical Vapor Transport Technique
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Nano-Titanium Dioxide Coatings for Enhanced Performance of Pantograph Support Insulators in Electric Railway Systems
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Nano-Titanium Dioxide Coatings for Enhanced Performance of Pantograph Support Insulators in Electric Railway Systems

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Abstract:

Pantograph support insulators are critical for maintaining reliable power transmission in electric railway systems. However, conventional porcelain insulators suffer from contamination buildup, leading to leakage currents and flashover risks. This study investigates nanotitanium dioxide (TiO₂) coatings to enhance porcelain insulator performance. X-ray diffraction (XRD) analysis confirmed the transformation of P25 TiO₂ into the rutile phase at 1240°C, improving durability and electrical properties. Energy-dispersive X-ray spectroscopy (EDX) verified uniform TiO₂ distribution, while field emission scanning electron microscopy (FE-SEM) revealed a smooth glaze layer. Electrical testing demonstrated a 52.11% reduction in leakage current for nanoTiO₂-coated insulators under 11 kV conditions, attributed to enhanced hydrophobicity and photocatalytic self-cleaning. These results highlight the feasibility of integrating nanoTiO₂ coatings into insulator manufacturing for reduced maintenance and improved reliability.

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Periodical:

Materials Science Forum (Volume 1169)

Pages:

9-14

DOI:

https://doi.org/10.4028/p-RevSI5

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Online since:

November 2025

Authors:

Norrawit Tonmitr, Amnart Suksri, Warayut Kampeerawat, Nakaret Kano, Methus Suwannaruang, Sora-at Tanusilp*

Keywords:

Leakage Current Reduction, Nano-TiO2 Coatings, Pantograph Support Insulators, Porcelain Insulators

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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