Question

Which of the following is/are the factors of electroplating that effects efficiency?

(a) Temperature and composition of the bath

(b) Composition of bath and time

(c) Temperature, the composition of the bath, time and current density

(d) Current density and composition of the bath

This question was posed to me during an online exam.

The above asked question is from Corrosion Prevention topic in division Corrosion Prevention of Corrosion Engineering

Answer 1

The correct answer is:

(c) Temperature, the composition of the bath, time and current density

Explanation:

The efficiency of electroplating is influenced by several factors, which include:

1. Temperature: The temperature of the electroplating bath affects the rate of reaction, the quality of the deposit, and the efficiency of plating.

2. Composition of the bath: The chemical composition of the plating solution (including the concentration of metal ions, additives, and stabilizers) plays a significant role in determining the quality and thickness of the deposit.

3. Time: The duration of electroplating directly influences the thickness of the metal coating. Longer plating times generally result in thicker deposits, which may also impact efficiency.

4. Current density: The current density, or the amount of current per unit area of the electrode, affects the quality and rate of deposition. High current densities may lead to poor adhesion or irregular plating, while low current densities can reduce the plating efficiency.

These four factors are critical in controlling the electroplating process to achieve optimal results, making option (c) the most comprehensive and correct choice.