Improved Corrosion Resistance of Pulse Plated Nickel through Crystallisation Control

Peter Torben Tang, Tohru Watanabe, Jens Enevold Thaulov Andersen, Gregers Bech-Nielsen

Research output: Contribution to journalJournal articlepeer-review

Abstract

When electrodeposition of nickel is used for corrosion protection of steel two aspects are important. The porosity of the coating and the resistance against corrosion provided by the coating itself. Using simple pulsed current (PC) plating, the size of the deposited crystals can be significantly smaller, thereby reducing porosity correspondingly. This usually also leads to improved hardness of the coating. Introducing pulse reversal (PR) plating, the most active crystals are continuously dissolved during the anodic pulse, providing a coating with improved subsequent corrosion resistance in almost any corrosive environment. This correlation between film texture and corrosion resistance will be discussed.
Original languageEnglish
JournalJournal of Applied Electrochemistry
Volume25
Pages (from-to)347-352
ISSN0021-891X
Publication statusPublished - 1995

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