Electrochemical measurements of electroless nickel coatings on zincated aluminium substrates

被引：16

作者：

Court, SW ^{[1
]}

Barker, BD ^{[1
]}

Walsh, FC ^{[1
]}

机构：

[1] Univ Portsmouth, Sch Pharm & Biomed Sci, Appl Electrochem Grp, Portsmouth PO1 2DT, Hants, England

来源：

TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 2000年 / 78卷

关键词：

aluminum substrates; corrosion; electrode potential verses time monitoring; electroless nickel; linear polarisation resistance; nickel deposition; porosity; zero resistance ammetry;

D O I：

10.1080/00202967.2000.11871330

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Zincate pre-treatment of aluminium substrates and the effects of deposit thickness on the corrosion resistance of electroless nickel deposits on aluminium have been studied by electrochemical methods. The results show the importance of the controlled zincate pre-treatment sep on the induction period for electroless nickel plating. The protective properties of the nickel deposit are evaluated, as a function of thickness, using linear polarisation resistance and zero resistance ammetry techniques. The corrosion resistance of the deposits, which is strongly related to their thickness, is compared to the results of porosity testing on steel substrates. An essentially non-porous deposit is obtained after a thickness of 5-10 microns has been deposited on aluminium substrates under the experimental conditions.

引用

页码：157 / 162

页数：6

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