What is electroplating and how is it done?

What is electroplating and how is it done?

Electroplating is the process of coating one metal or metal object with a very thin layer of another metal, typically by applying a direct electric current. This partially dissolves the metals and creates a chemical bond between them. The coating applied by electroplating is usually around 0.

What are the effects of electroplating?

Electroplating has several effects on an object, including changes in conductivity, hardness, resistance, brittleness and luster. Electroplating is used to apply metal coating on non metallic surfaces through electro chemical processes.

How does temperature affect electroplating?

In general, the efficiency of electroplating from ionic liquids improves as the temperature increases. ... An optimum operating temperature of 80°C was also found for the tin solution of glyceline. Nickel in reline solutions must be used at high temperatures in order to form a certain complex before plating will occur.

How does pH affect electroplating?

Basic Solutions Basic electroplating solutions have a pH above 7. ... A basic solution forms hydroxide ions, or OH-. If the pH of the solution is very high, metal hydroxides such as ZnOH form and begin precipitating out of the solution, reducing the efficiency of the electroplating process.

What are uses of electroplating?

Electroplating is widely used in industry and decorative arts to improve the surface qualities of objects—such as resistance to abrasion and corrosion, lubricity, reflectivity, electrical conductivity, or appearance.

What metal is used for plating?

Some of the most commonly used metals for electroplating include: Copper: Copper is often used for its conductivity and heat resistance. It is also commonly used to improve adhesion between layers of material. Zinc: Zinc is highly corrosion-resistant.

Which is the most effective metal for coating and why?

Because zinc and aluminum are, under most conditions, more corrosion resistant than steel, they are the most widely used spray-coating metals. In addition, since both metals are anodic to steel, they act galvanically to protect ferrous substrates.

How does plating process work?

Electroplating involves passing an electric current through a solution called an electrolyte. ... When the electricity flows through the circuit they make, the electrolyte splits up and some of the metal atoms it contains are deposited in a thin layer on top of one of the electrodes—it becomes electroplated.