The uniform and dense zinc coat on AZ31 magnesium alloy is obtained when the pretreatment including activation,zinc dipping,deplating,twi-zinc dipping was adopted before electrogalvanizing.

• 结果表明:按活化、一次浸锌、退镀、二次浸锌的工艺,得到了均匀致密的浸锌层,其裸露的单质锌作为形核核心,促进了后续电镀。