Title :
Investigation of Hydrophobic and Optical properties of HfO2 coating on ceramic insulator
Author :
Dave, V. ; Gupta, H.O. ; Chandra, R.
Author_Institution :
Dept. of Electr. Eng., IIT Roorkee, Roorkee, India
Abstract :
High voltage ceramic (porcelain) insulators of transmission line and power transformers are facing a major problem of contamination. This contamination is location dependent and is from various sources like desert, sea, industry, UV radiations etc. In this paper we report structural, hydrophobic and optical property of hafnium oxide (High -k material) coating on ceramic Insulator. This coating was developed using DC magnetron sputtering technique. The structural property of the coating was investigated using XRD and AFM. The coating exhibits monoclinic phase. The surface roughness (nanometre range) was determined using image software attached with AFM. The wettability of the coating was measured using contact angle meter. The coating was found to be hydrophobic. The band gap of the coating was also calculated from the optical data and was found to be 5.4.This ensures the dielectric property of the coating.
Keywords :
X-ray diffraction; atomic force microscopy; contact angle; hafnium compounds; high-k dielectric thin films; hydrophobicity; insulating coatings; optical properties; porcelain insulators; power transformer insulation; power transmission lines; sputtered coatings; surface contamination; surface roughness; wetting; AFM; DC magnetron sputtering technique; HfO2; UV radiations; XRD; band gap; contamination problem; desert; dielectric property; high voltage ceramic insulators; high-k material coating; hydrophobic property; image software; industry; optical data; optical property; porcelain insulators; power transformers; sea; structural property; surface roughness; transmission line; wettability; Flashover; Magnetic resonance imaging; Rough surfaces; Surface contamination; Surface morphology; Surface roughness; Surface treatment; Contamination; Flashover; Hydrophobicity; Sputtering;
Conference_Titel :
Properties and Applications of Dielectric Materials (ICPADM), 2012 IEEE 10th International Conference on the
Conference_Location :
Bangalore
Print_ISBN :
978-1-4673-2852-4
DOI :
10.1109/ICPADM.2012.6319015
