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Effect of addition of polyethylene glycol into trivalent chromium bath on chromium coating


Tey, Eydar and Zainal, Zulkarnain and Lim, Kean Pah and Ismail, Ismayadi (2020) Effect of addition of polyethylene glycol into trivalent chromium bath on chromium coating. Solid State Phenomena, 307. 264 - 270. ISSN 1012-0394; ESSN: 1662-9779


Conventionally, chromium is deposited from hexavalent chromium baths containing extremely toxic compounds of Cr (VI). Due to serious health and environmental concerns of Cr (VI), trivalent chromium bath is proposed as a counter approach towards greener and safer chromium plating. In the present work, chromium coatings were electrodeposited onto copper substrate using a modified trivalent chromium electroplating bath with addition of polyethylene glycol (PEG 1500). The effects of PEG on the Cr coating were investigated. The crystalline structure, composition and surface morphology of the deposits were studied by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and scanning electron microscopy (SEM). The surface roughness of the coatings were characterized by atomic force microscopy (AFM). With addition of PEG, the surface roughness of Cr coating decreased by 44.5 % and the corrosion rate decreased by 23.3 % compared to that of without PEG. Meanwhile, the hardness increased by 22.7 %.

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Official URL or Download Paper: https://www.scientific.net/SSP.307.264

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.4028/www.scientific.net/SSP.307.264
Publisher: Trans Tech Publications
Keywords: Chromium; Coating; Corrosion resistance; Electrodeposition; Hardness; Polyethylene glycol; Roughness; Trivalent chromium bath
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 21 Dec 2021 08:04
Last Modified: 21 Dec 2021 08:04
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/SSP.307.264
URI: http://psasir.upm.edu.my/id/eprint/88563
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