For hard and wear resistant coatings
PALLUNA® 4700 is a chloride-free ammoniacal high-speed electrolyte for the deposition of a semi-bright to bright palladium-nickel alloy in reel-to-reel lines (selective dipping, jet plating, brush plating) and tabplaters.
Depending on the operating conditions, the electrolyte deposits alloy layers with approx. 80% of Pd. The alloy composition is largely independent of the current density.
The hard and wear-resistant layers are ductile, with low internal stresses and exhibit good corrosion resistance.
Electrolyte characteristics
Electrolyte type Chloride-free ammoniacal
Metal content 20 g/l Pd, 15 g/l Ni
pH value 7.7
Operating temperature 40 °C
Current density range up to 50 A/dm² in JetLab
Plating speed up to 12 μm/min in JetLab
Anode material Platinized titanium (e.g. PLATINODE®)
Coating characteristics
Coating Palladium nickel
Purity 80 wt.% Pd, 20 wt.% Ni
Brightness Semi-bright to bright
Hardness of deposit approx. 550 HV kp/mm² (5mN load)
Density of the coating ca. 10,8 g/cm³
Advantages
Chloride-free
pH and ammonia reduced
High deposition rate
Ductile coatings
Constant alloy composition
Applications
Industrial connectors (data and signal transmission)
IT connectors (e.g. USB-C)
