EF-9 Lead and Cadmium Free Mirror Bright Electroless Nickel
EF-9 is a medium-phosphorus electroless nickel plating solution that does not contain lead or cadmium. It is suitable for high-precision decoration and corrosion-resistant protective layers. The process can meet the requirements of ASTM B733 and AMS2404D, and comply with the directives of ELV200/53/EC, EU ROHS2002/95/EC and WEEE2002/96/EC.
Category:
EF-9 Lead and Cadmium Free Mirror Bright Electroless Nickel
Product Description
EF-9 is a medium-phosphorus electroless nickel plating solution that contains no lead or cadmium, making it suitable for high‑precision decorative finishes and corrosion‑resistant protective coatings. The process complies with the requirements of ASTM B733 and AMS 2404D, and meets the directives of ELV 200/53/EC, EU RoHS 2002/95/EC, and WEEE 2002/96/EC.
Tank solution start-up:
Bath preparation / Solution formulation: EF-9A 6.0%, EF-9B 15%
Bath life: 8–10 MTO for steel, 5–7 MTO for aluminum; a cycle is completed by replenishing with 6 g/L of nickel.
Shower Gel Maintenance and Refill Instructions (100 L) (Add at a 1:1 ratio)
Note: Do not exceed a dosage of 20%. If solution loss is significant, add small amounts in multiple increments; adding a large quantity at once (>20%) may result in rapid deposition, localized passivation, or complete cessation of the reaction. Maintain the operating temperature between 85 and 95°C; excessively high temperatures can accelerate plating or cause bath decomposition, while temperatures that are too low may reduce the plating rate. When the process is idle, holding the solution at the operating temperature for an extended period can lead to excessive consumption of hypophosphite and shorten the bath life.
Operating parameters
Deposition rate
pH vs. Deposition Rate and Phosphorus Content
Plating bath load:
The bath load should be maintained between 0.49 dm³/L and 2.46 dm³/L; overloading can lead to a reduced deposition rate, sluggish deposition, and bath instability. Underloading may result in rapid deposition, localized passivation, or complete surface passivation. If the bath’s operating volume falls below the minimum control level and cannot be avoided, the following remedial measures may be employed:
1) The bath solution’s pH and temperature exceed their maximum values.
2) Maintain the bath solution’s activity (nickel content) at 80%.
3) Reduce or remove the solution, and stir with air.
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