Dynamic behavior of electroless nickel plating reaction on magnesium alloys

In order to obtain better control over the quality of electroless nickel–phosphorous (EN) coatings on magnesium AZ91D alloy, the effects of metal salt concentrations, reducing agent, pH, and temperature on deposition rate were studied. The reaction orders and activation energy of the deposition were...

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Bibliographic Details
Published in:Journal of Coatings Technology and Research 2012-01, Vol.9 (1), p.107-114
Main Authors: Xie, Zhihui, Yu, Gang, Li, Tingjing, Wu, Zhenjun, Hu, Bonian
Format: Article
Language:English
Subjects:
Activation energy
Alloys
Chemistry and Materials Science
Coatings
Coatings industry
Corrosion and Coatings
Deposition
Electroless plating
Industrial Chemistry/Chemical Engineering
Magnesium alloys
Magnesium base alloys
Magnesium industry
Materials Science
Nickel
Plating
Polymer Sciences
Specialty metals industry
Surfaces and Interfaces
Thin Films
Tribology
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Summary:In order to obtain better control over the quality of electroless nickel–phosphorous (EN) coatings on magnesium AZ91D alloy, the effects of metal salt concentrations, reducing agent, pH, and temperature on deposition rate were studied. The reaction orders and activation energy of the deposition were determined. The results show that the apparent activation energy ( E a ) in the EN plating reaction is approximately 38.03 kJ/mol. The deposition rate increased with increasing temperature, concentration of H 2 PO 2 − , and pH, and decreased with increasing concentration of complexing agents. For nickel ions, the deposition rate increased gradually with increasing concentration ( x ) when x  
ISSN:1547-0091
1945-9645
1935-3804
DOI:10.1007/s11998-011-9336-z