Zinc Electroplating-solution Additives

High zinc chloride content: can improve cathode current density and cathode current efficiency

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Description

High zinc chloride content: can improve cathode current density and cathode current efficiency

Reduce dispersion and coverage

High content makes the coating rough easily

Low zinc chloride content: can appropriately improve the dispersion ability

When it is too low, the concentration polarization will increase, the current will not open much, the upper limit of the current density will decrease, the high current density area will appear charring phenomenon, and the bright area will narrow.

Bath formula and technological parameters

	concentration range	Standard concentration
KCl	200-230 g/L	220g/L
ZnCl	60-100 g/L	60g/L (barrel)
Boric Acid	30-40 g/L	35 g/L
HL-93 Softening Agent	20-30 g/L	25 g/L
HL-93 Brightening Agent	0.6 ml/L- 1.0 ml/L	0.8ml/L
Temperature (℃)	10-55℃	40℃
PH value	4.8-5.6	5.2
DK (A/dm2)	0.1-5	3