Role of amino acids on electrodeposition and characterisation of zinc from alkaline zincate solutions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Role of amino acids on electrodeposition and
characterisation of zinc from alkaline zincate
solutions
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| Creator |
Sekar, R.
Jagadesh, K.K. Ramesh Bapu, G.N.K. |
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| Subject |
Industrial Metal Finishing
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| Description |
Amino acid-based addition agents have been employed in an alkaline zincate plating electrolyte
to modify corrosion resistance, crystal size, surface morphology, and adhesion of deposits. These
addition agents such as guanine, histidine and glutamic acid are recommended in zincate solution
to improve the corrosion resistance, crystal size and adhesion of the deposits. The XRD
pattern obtained for electrodeposited zinc from such baths shows a polycrystalline hexagonal
close-packed (hcp) structure. The crystal size was calculated using the Scherrer formula.
A uniform and pore-free surface was observed under scanning electron microphotography (SEM)
analysis. The corrosion resistance behaviour of the zinc deposits was analysed by potentiodynamic
polarisation and electrochemical impedance spectroscopy (EIS). Histidine appears to
show most promise in enhancing corrosion resistance and grain refining.
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| Date |
2015
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3139/1/003-2015.pdf
Sekar, R. and Jagadesh, K.K. and Ramesh Bapu, G.N.K. (2015) Role of amino acids on electrodeposition and characterisation of zinc from alkaline zincate solutions. Transactions of the Institute of Materials Finishing. (In Press) |
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| Relation |
http://cecri.csircentral.net/3139/
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