Please use this identifier to cite or link to this item: https://doi.org/10.1007/BF01016038
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dc.titleA.c. corrosion of nickel in sulphate solutions
dc.contributor.authorTan, T.C.
dc.contributor.authorChin, D.T.
dc.date.accessioned2014-10-09T08:17:38Z
dc.date.available2014-10-09T08:17:38Z
dc.date.issued1988-11
dc.identifier.citationTan, T.C., Chin, D.T. (1988-11). A.c. corrosion of nickel in sulphate solutions. Journal of Applied Electrochemistry 18 (6) : 831-838. ScholarBank@NUS Repository. https://doi.org/10.1007/BF01016038
dc.identifier.issn0021891X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/91397
dc.description.abstractThe corrosion of nickel under the influence of alternating current (a.c.) in pH 1-7 Na2SO4 solutions has been investigated with an alternating voltage (a.v.) modulation technique. The anodic polarization curves and pitting behaviour of nickel were examined with the superimposition of sinusoidal, square, and triangular a.v. over a range of a.v. magnitudes of 0-5000m V r.m.s., and a.v. frequencies of 20-5000 Hz. It was found that a.v. reduced the passive d.c. potential regime by increasing the critical current density prior to passivation and by shifting the active-passive transitional potential toward the positive direction. In acidic sulphate solutions, a.v. increased the current density in the passive regime in a way similar to the addition of chloride ions. A.v. destroyed the passivity and enhanced the pitting corrosion of nickel at both the passive and transpassive d.c. potentials. The passivity of nickel was destroyed regardless of the a.v. waveforms. Triangular a.v. caused the severest destruction of passivity; this was followed by sinusoidal and square wave a.v. © 1988 Chapman and Hall Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/BF01016038
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMICAL ENGINEERING
dc.description.doi10.1007/BF01016038
dc.description.sourcetitleJournal of Applied Electrochemistry
dc.description.volume18
dc.description.issue6
dc.description.page831-838
dc.description.codenJAELB
dc.identifier.isiutA1988R839400005
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