Question

Write the process of electroplating copper or an aluminium plate.​

Answer 1

~Answer :-

⟹ Electroplating is basically the process of plating a metal onto the other by hydrolysis mostly to prevent corrosion of metal or for decorative purposes. The process uses an electric current to reduce dissolved metal cations to develop a lean coherent metal coating on the electrode. Electroplating is often applied in the electrical oxidation of anions on a solid substrate like the formation of silver chloride on silver wire to form silver chloride electrodes.

⟹ Electroplating is majorly applied to modify the surface features of an object (e.g corrosion protection, lubricity, abrasion), but the process can also be used to build thickness or make objects by electro forming.

Answer 2

Explanation:

1. Degrease.
2. Soak clean.
3. Thoroughly rinse.
4. Dip in a 50 percent nitric acid solution. Depending on the aluminum alloy, sodium bifluoride, sulfuric acid or chromic acid may have to be used in conjunction with nitric acid.
5. Thoroughly rinse.
6. Dip in a zincate bath for 1 minute. (Proprietary zincate solutions are best.)
7. Strip the zinc coating using 50 percent nitric acid
8. Rinse thoroughly.
9. Dip in the zincate solution again.*
10. Rinse thoroughly.
11. Apply a copper strike using a cyanide or non-cyanide alkaline strike bath.
12. Rinse thoroughly.
13. Plate in a copper plating bath.