The Effect of Ferrous Sulphate on the Electroless Depositionof Co-Fe-P Alloys

Authors

Sen-lin WANG, College of Materials Science and Engineering, Huaqiao University, Quanzhou 362011,China;
Qing-hua LI, College of Materials Science and Engineering, Huaqiao University, Quanzhou 362011,China;

Corresponding Author

Sen-lin WANG

Abstract

Electroless deposition of Co-P alloy and Co-Fe-P alloy from an alkaline bath, containing sodium hypophosphite as a reducer, boric acid as a buffer agent and sodium citrate as a complexing agent, was investigated respectively. The effects of process parameters, such as pH of solution and metallic salt mole ratio of CoSO_(4)/FeSO_(4), on the plating rate were examined. It was found that the presence of ferrous sulfate in the bath has an inhibitory effect on the alloy deposition. As a consequence, the plating rate of Co-Fe-P is lower than that of Co-P. The electrochemical polarization measurements have been carried out to examine the effect of ferrous sulphate on the cathodic or the (anodic) polarization process. The ferrous sulphate affects both the cathodic and anodic polarization processes, which reduces the deposition current and potential. The results of the electrochemical polarization experiments agree well with those of electroless deposition rate measurements.

Keywords

Electroless deposition, Alloys, Cobalt, Iron, Electrochemical polarization

DOI Link

https://doi.org/10.61558/2993-074X.1586

Publication Date

2004-08-28

Online Available Date

2004-08-28

Revised Date

2004-08-28

Received Date

2004-08-28

Recommended Citation

Sen-lin WANG, Qing-hua LI. The Effect of Ferrous Sulphate on the Electroless Depositionof Co-Fe-P Alloys[J]. Journal of Electrochemistry, 2004 , 10(3): 346-352.
DOI: 10.61558/2993-074X.1586
Available at: https://jelectrochem.xmu.edu.cn/journal/vol10/iss3/16

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