| 摘要 |
Zinc electroplating apparatus with a catholyte compartment (6) containing an acidic catholyte and a substrate (2) to be plated and an anolyte compartment (5) containing a neutral or acidic zinc-containing anolyte and a consumable zinc anode (4), the compartments being separated by a cation-permeable membrane (3), comprises a device that is in hydraulic communication with the anolyte compartment and exchanges any foreign metal ions in the anolyte for zinc ions or protons. An independent claim is also included for a zinc electroplating process using apparatus as above, where the anolyte is withdrawn from its compartment and passed through a device in which any foreign metal ions are exchanged for zinc ions or protons. |
