BrahMos Aerospace Interview Questions and Answers

Electroplating is a process of depositing a layer of metal onto a surface using an electric current.

• Electroplating involves immersing the object to be plated (called the substrate) into a solution containing metal ions.

• A direct current is then passed through the solution, causing the metal ions to be attracted to the substrate and form a metal coating.

• The metal coating can provide various benefits such as improved appe...read more

Plating provides corrosion resistance, improved appearance, and increased durability to metal surfaces.

• Corrosion resistance: Plating creates a barrier between the metal surface and the environment, preventing corrosion and rusting.

• Improved appearance: Plating can enhance the appearance of metal surfaces by adding a layer of shine or color.

• Increased durability: Plating can increase the hardness and wear resistance of me...read more

Electroplating is used to prevent discoloration, increase corrosion resistance, improve conductivity, enhance wear resistance, and for decorative purposes.

• Electroplating is a process of coating a metal object with a thin layer of another metal using electrolysis.

• To prevent discoloration, electroplating is used to add a protective layer to the metal object.

• Electroplating can also increase the corrosion resistance of the...read more

Anodizing is an electrochemical process that forms a protective oxide layer on the surface of a metal.

• Anodizing involves immersing the metal in an electrolyte solution and applying an electric current.

• The metal acts as the anode and a cathode is also present in the solution.

• The electric current causes oxygen ions to combine with the metal atoms, forming a layer of metal oxide on the surface.

• The thickness and properties...read more

There are several types of anodizing processes used in electroplating.

• The most common types of anodizing are sulfuric acid anodizing, chromic acid anodizing, and hardcoat anodizing.

• Sulfuric acid anodizing is the most widely used method and provides a corrosion-resistant coating.

• Chromic acid anodizing is used for aluminum alloys that require a thin, non-conductive coating.

• Hardcoat anodizing, also known as Type III anodi...read more

Types of inspection in plating include visual inspection, thickness measurement, adhesion testing, and corrosion resistance testing.

• Visual inspection involves examining the plated surface for defects such as pits, cracks, or uneven coating.

• Thickness measurement is done using techniques like X-ray fluorescence or eddy current testing to ensure the plating meets specified thickness requirements.

• Adhesion testing assesses ...read more