Answer: The conduction mechanism of electrolytes differs from that of metal conductors. In metals, electric current is carried by the movement of free electrons, whereas in electrolytes, current is transported by charged ions.
Electrolytes are electrically neutral because the total positive and negative charges are balanced. When a voltage is applied, ions migrate towards the electrode of opposite polarity under the force of the electric field: cations move to the cathode, and anions move to the anode. This ionic movement enables current flow, which is how electrolytes conduct electricity.
During electroplating, the rack becomes hot. Is this caused by excessively high bath temperature?
Answer: Although rack heating is related to solution temperature, the main causes are:
(1) Excessively high current passing through the rack.
(2) Poor electrical contact on the rack, leading to increased resistance and heating.
What are the main factors controlling electroplated coating thickness?
Answer: The main factors are current density, current efficiency, and plating time.
Are brass coatings and bronze coatings the same alloy coating?
Answer: No. Brass coatings are copper-zinc alloys, while bronze coatings are copper-tin alloys.
