Abstract
The invention relates a composition and a method of aqueous solution for an electrodeposited copper layer of cyanide-free compound magnesium alloy surface. The surface of magnesium alloy is electrodeposited with conductive copper layer in an alkaline cupric sulfate bath and then is done with a thickness treatment of copper layer in a merchant cupric sulfate bath resulting in the surface having corrsition resistance, wear resistance and brightness. A pretreatment is fairly simple. The pretreatment composition is without HF and CrO3 and hypertoxic cyanide-free compound. Thus, effluent standards of water pollution effluent standards are easily met and the working safety for operators is enhanced. The invention is highly valuable in industrial application.
| Translated title of the contribution | A composition and a method of aqueous solution for an electrodeposited copper layer of cyanide-free compound magnesium alloy surface |
|---|---|
| Original language | Chinese (Traditional) |
| Patent number | I322200 |
| IPC | C25D-003/38(2006.01);C25D-021/14(2006.01) |
| State | Published - 21 03 2010 |
Bibliographical note
公開公告號: I322200Announcement ID: I322200