電鍍的那層物料的厚度有多少，電鍍的那層物料是會否受磁的?

電鍍其實係需要 2 個電極
一個正, 一個負
如果要電鍍一樣金屬
要將被電鍍既金屬駁去負極
用黎電鍍既金屬就駁去正極
用電鍍金屬既溶液作為電解質
e.g. electroplate nickel on iron (iron inside, nickel outside)
the cathode is iron, anode is nickel, electrolyte is nickel(II) sulphate
電鍍既時候
電鍍金屬會 dissolve
被電鍍金屬會有一層電鍍金屬既 layer
果層 layer 既厚度係視乎電鍍金屬有幾多(volume or mass)同電鍍既時間
volume or mass 愈多同時間愈長就愈厚

至於電鍍層受唔受磁
咁就睇下你用咩金屬黎電鍍
一個法則, 只要係受磁既金屬, 如鐵, 咁就得
因為電鍍層都係金屬黎既
如果電鍍金屬係唔受磁
而被電鍍金屬係受磁
咁就睇下電鍍層既厚度
愈厚就愈難受磁

The thickness of the electroplated metal layer is depended on so many factors such as the time of plating, metal ion concentration of the plating solution, amper of electricity, pH, etc. The electroplated layer will also affected by the magentic filed.