Role of Polyethylene Glycol (PEG) on Trivalent Chromium Electrodeposition
Md. Ehasanul Haque *
Department of Materials Science and Engineering, University of Rajshahi, Bangladesh. and School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), Nomi, Ishikawa, Japan.
Md. Asadul Hoque
Department of Materials Science and Engineering, University of Rajshahi, Bangladesh.
Md. Mayeedul Islam
Department of Chemistry, Rajshahi University of Engineering and Technology (RUET), Bangladesh.
Md. Saidul Islam
Department of Materials Science and Engineering, University of Rajshahi, Bangladesh.
Chand Mohammad Mustafa
Department of Applied Chemistry and Chemical Technology, University of Rajshahi, Bangladesh.
*Author to whom correspondence should be addressed.
Abstract
The effect of polyethylene glycol (PEG) was observed on the quality of trivalent chromium electroplating. The thickness and the current efficiency of the Cr3⁺ deposit were decreased with increasing the concentration of PEG, whereas the optical reflectivity and the corrosion resistivity increased. At the higher concentration of PEG (0.3 g/L), the best quality electrodeposition was observed.
Keywords: Trivalent chromium electroplating, polyethylene glycol, corrosion, optical reflectivity