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Corresponding Author

Meiyuan Wang

Abstract

The anodic oxidizing behavior of sodium hypophosphite in the process of electroless nickle deposition(pH=5.5) was investigated with the linear potential sweep method and alternating current impedance.The results indicated that,the oxidation of NaH 2PO 2 was a complicated electrochemical process and affected by the concentration of NaH 2PO 2, the temperature of the bath,the sweep rate and the existence of nickel ion. The NaH 2PO 2 electrooxidation reaction was very likely preceded by heterogeneous interface transformation process,which might be the control step of the whole anodic process.

Keywords

Electroless nickel deposition, Anodic oxidation, Sodium hypophosphite

Publication Date

1999-11-28

Online Available Date

1999-11-28

Revised Date

1999-11-28

Received Date

1999-11-28

References

1  Gafin AH,Orchard SW.Current- potentialrelationshipsforthe half- reactionsin twolectroless nickelplatingbaths usingthe quartz crystal microbalance electrode.J.Appl.Electrochem .,1992,22 :830 ~834 2  Donahue FM,Yu CU.Astudy ofthe mechanism ofthe electroless deposition of nickel.Electrochimica Acta,1970 ,15 :237 ~239 3  Lukes RM.The mechanism fortheautocatalyticreduction ofnickelby hypophosphiteion .Plating,1964 ,51 :969 4  Abrantes L M,Oliveira M C,Vieil E.Aprobe beam deflction study ofthe hypophosphite oxidation on a nickelelectorde.Electrochimica Acta,1996 ,41(9) :1 515 ~1 524 5  Podesta JJ,Piatti RCV,Arvia AJ.Voltam metric behaviour of platinum in aqueoussolutionscontainingsodiumhypophosphite.J.Appl.Eletrochem .,1990 ,20 :245 ~251 6  Shastri LV,Huie RE,Neta P.Formation and reactivity of hypophosphiteand phosphiteradicals and their peroxylderivatives .J.Phys.Chem .,1990 ,94:1 895 ~1 899 7  王美媛,旷亚非.次亚磷酸钠体系化学镀镍的电化学研究.腐蚀与防护,1999,20(8) :339 8  刘永辉编著.电化学测试技术.北京:北京航空学院出版社,1987 :128 ~139 9  天津大学物理化学教研室编.物理化学( 第二版) ,下册- 北京:高等教育出版社,1983 :244 10 Abrantes L M,Oliveira M C,BellierJP,Lecoeur J.Electro - oxidation of hypophosphite ions on nickelsinglecrystalelectrodes.Electrochimica Acta.,1994,39(11 ,12) :1 915 ~1 922 11 Anson F.讲授,黄慰曾等编译.电化学和电分析化学.北京:北京大学出版社,1991 :7 12 龚竹青编.理论电化学.长沙:中南工业大学出版社,1987:189

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