ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): P Arockiasamy, G. Thenmozhi, R Jaya Santhi

Email(s): shanthijaya02@gmail.com

DOI: Not Available

Address: P Arockiasamy, G. Thenmozhi, R Jaya Santhi*
P.G & Research Department of Chemistry, Auxilium College, Vellore - 632 006, India
*Corresponding Author

Published In:   Volume - 7,      Issue - 6,     Year - 2014


ABSTRACT:
The electroless Ni-P/Ni-W-P double layer coating in as-plated condition on 6061 aluminium alloy substrate were prepared. The morphology of the prepared Ni-P/Ni-W-P double layer coatings were found out from SEM analysis and phases were found out using XRD. The corrosion resistance of the Ni-P/ Ni-W-P coatings were compared by electrochemical impedance spectroscopy and potentiodynamic polarization studies in 3.5 wt.% NaCl solution. Microhardness of the Ni-W-P has the better hardness value than Ni-P coating. The values of EIS and potentiodynamic polarization studies indicate that the corrosion resistance values for Ni-P/Ni-W-P coatings were higher when compared to Ni-P coatings. This may be due to presence of W elements on the aluminium substrates. The results indicate that the Ni-W-P coating can be a better corrosion protection material on aluminium alloys than Ni-P coatings.


Cite this article:
P Arockiasamy, G. Thenmozhi, R Jaya Santhi. Evaluation of Corrosion Resistance of Electroless Ni-P/Ni-W-P Double Layer Coatings on 6061 Aluminium Alloy. Asian J. Research Chem. 7(6): June 2014; Page 551-557.

Cite(Electronic):
P Arockiasamy, G. Thenmozhi, R Jaya Santhi. Evaluation of Corrosion Resistance of Electroless Ni-P/Ni-W-P Double Layer Coatings on 6061 Aluminium Alloy. Asian J. Research Chem. 7(6): June 2014; Page 551-557.   Available on: https://ajrconline.org/AbstractView.aspx?PID=2014-7-6-1


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