Electroless Ni-Co-Cu-P Alloy Deposition in Alkaline Hypophosphite Based Bath

Content Provider	Semantic Scholar
Author	Zaimi, Muhammad Azran, M. N. Ahmad, Muhamad Amin Alif, Muhamad Aziz, M. Azam, Mohd Asyadi Kasim, Mohd Shahir Munawar, Rose Farahiyan Manaf, Mohd Edeerozey Abd
Copyright Year	2016
Abstract	The use of electroless deposition method to deposit nickel alloy attracts attention due to its uniformity, corrosion resistance in neutral media and low friction. Quaternary nickel alloy deposit can be achieved by adding metal ion additive into the plating bath. Furthermore, the use of alkaline bath can accelerate the deposition rate, and provide sufficient thickness for corrosion protection. In this study, an electroless quaternary nickel alloy is deposited on iron coupons by adding cobalt and copper ions in hypophosphite based Ni-P alkaline bath. The nickel alloy deposit surface morphology is studied using scanning electron microscope (SEM) and x-ray fluorescence (XRF). Corrosion behavior of the nickel alloy is investigated using polarization curve measurement in 3.5wt% NaCl aqueous solution. From the results, the elecroless Ni-Co-Cu-P alloy coating produced at higher plating bah pH is harder than the lower bath pH. Higher Co, Cu and P content in the Ni alloy exhibit broader passive area in the polarization curve measurement results.
Starting Page	151
Ending Page	154
Page Count	4
File Format	PDF HTM / HTML
Volume Number	694
Alternate Webpage(s)	http://eprints.utem.edu.my/17762/1/KEM.694.151.pdf
Alternate Webpage(s)	https://doi.org/10.4028/www.scientific.net%2FKEM.694.151
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article