Important Facts For Prelims
Nickel Alloy Coatings
- 11 Jan 2023
- 3 min read
Why in News?
As per an autonomous Research and Development Centre of the Department of Science and Technology (DST), a new method of deposition of Nickel alloy coatings on engineering-grade materials can replace environmentally toxic chrome plating.
What is Chrome Plating?
- About:
- Chrome plating is a process by which a thin layer of chromium is deposited on a metal surface using an electroplating process.
- The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating.
- Chrome plating is a process by which a thin layer of chromium is deposited on a metal surface using an electroplating process.
- Properties:
- The chromium layer is highly reflective and provides a hard, durable surface that is resistant to corrosion.
- Significance:
- Chrome plating is often used on automotive parts, as well as on household fixtures such as door handles, and in many industrial applications.
- Disadvantage:
- The process of chrome plating involves the use of hexavalent chromium, which is a known human carcinogen.
- It can cause respiratory problems, skin irritation, and an increased risk of lung cancer when inhaled. It can also cause skin irritation, and allergic reactions and can be toxic when ingested.
- The process of chrome plating involves the use of hexavalent chromium, which is a known human carcinogen.
What is Nickel Alloy Coating?
- About:
- Nickel coating provides a unique combination of corrosion and wear resistance. It can add brightness, luster and appeal.
- It also provides excellent adhesion properties for subsequent coating layers, which is why nickel is often used as an ‘undercoat’ for other coatings, such as chromium.
- Applications:
- Aerospace: Nickel alloy coatings are used on aircraft and aerospace components to provide protection against corrosion and wear, as well as to improve the durability and lifespan of the parts.
- Automotive: Nickel alloy coatings are used on automotive parts to protect against corrosion and wear, as well as to improve the durability and lifespan of the parts.
- Food Processing: Used on food processing equipment to protect against corrosion and to provide a non-stick surface.
