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C

Copper-nickel coating

This coating is often used in metal and surface finishing as a layer system to create corrosion-protective surfaces that are also decorative. First, ductile, shiny copper layers with a high covering capacity are deposited in an electrolytic process.

In the copper-nickel layer combination, they serve as a substructure, so to speak, for the galvanic surface nickel. Nickel provides high corrosion resistance, which depends on the selected layer thickness. Copper-nickel layers are also frequently used in a layer system with chromium.

Properties:

Atomic mass

63,57

Density

8920 kg/m³

Melting point

1083 °C

Boiling point

2595 °C

Normal potential

+ 0.342 V (Cu Cu2+ + 2e‾ )

Source: "Magazine for Surface Technology"

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