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#293 Electroplating application in various fields 1: Types of copper plating bath and applications

Category : Electroplating
May26, 2017

Industrial copper plating can be classified as the following table according to the types of plating bath.Physical properties of the coating to be deposited vary depending on the types of plating bath. It is important to choose an appropriate type according to the intended use.

[Table] Types of copper plating bath, film characteristics, and applications
Types of copper plating bathFilm characteristicsApplications
Acidic bathCopper sulfate plating bathExcellent glossiness and smoothness.Film hardness is low.Through-hole plating, electroforming, print rolls, carbonizing prevention, plating coat for plastics.
Copper borofluoride bathHigh-speed plating is possible.Film elongation is small.Electroforming, print rolls
Alkaline bathCyanide copper bathCan be plated directly over steel and zinc die cast.Bright plating has a smooth surface.Strike plating, undercoat, carbonizing prevention, etc.
Pyrophosphoric acid
bath for copper plating
Excellent throwing power.The crystal structure of the film is dense, minimizing the transmission loss of high-frequency current.Waveguide, through-hole plating, electroforming
Electroless copper plating bathCan be plated on non-conducting substances.The film thickness becomes consistent regardless of the shape.Through-hole plating and plastic coating.

The following diagram shows the properties of plating films formed by using various types of plating bath.

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