微量元素對高速電鍍鋅-鎳合金的影響

Influences of Trace Elements on High Speed Zn-Ni Alloy Electroplating

摘要: 研究了微量元素Cu、Fe、Cr對高速電鍍zn-Ni合金的影響并探討了其作用機理。Cu²⁺在Zn-Ni鍍液中容易析出,但它是一種有害元素;Fe²⁺、Cr³⁺則難于析出,鍍層中含適量的Fe、Cr可提高Zn-Ni鍍層耐蝕性。同時還探討了微量元素電沉積機理,提出了微量元素從Zn-Ni鍍液中電沉積進入鍍層的定量判定方法。

Abstract: The influences of trace elements Cu,Fe,Cr on high speed Zn-Ni alloy electroplating and their mechanism have been investigated.The Cu²⁺ in Zn-Ni electrolyte can easily deposit,but it is a harmful element;while Fe²⁺ and Cr³⁺ are difficult to deposit.The Fe and Cr in deposit can increase the corrosion resistance of Zn-Ni deposit.The electrodepositing mechanism of trace elements has been discussed,and the quantitative predication method for wheather trace element can deposit from electrolyte has been established.