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Anodic degreasing

The same electrolytes are used in anodic degreasing as in cathodic degreasing. However, oxygen is formed here on the material. Metallic contamination (and often also base materials) are electrolytically dissolved.

Cathodic degreasing is more effective than anodic degreasing in electroplating, as double the amount of hydrogen than oxygen is formed at the same current. Due to the danger of hydrogen embrittlement, anodic switching is partially prescribed. In some cases, the degreasing polarity is reversed. Usually, cathodic switching is then used first before being reversed to anodic switching at the end.