Improved corrosion resistance of pulse plated nickel through crystallisation control

When electrodeposition of Ni 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 plating, the size of the deposited crystals can be significantly smaller, the...

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Bibliographic Details
Published inJournal of applied electrochemistry Vol. 25; no. 4; pp. 347 - 352
Main Authors TANG, P. T, WATANABE, T, ANDERSEN, J. E. T, BECH-NIELSEN, G
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.04.1995
Subjects
Applied sciences
Exact sciences and technology
Metallic coatings
Metals. Metallurgy
Production techniques
Surface treatment
Corrosion resistance
Pulsed current
Metal coating
Acid corrosion
Nickel
Porosity
Hardness
Electroplating
Corrosion protection
Texture
Surface treatment
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Summary:When electrodeposition of Ni 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 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 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 is discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-891X
1572-8838
DOI:10.1007/BF00249653