Quantcast

Mitigating Corrosion Under Insulation and Supporting the Longevity of Industrial Pipe Insulating Systems

Download
Advertisement

Gas Nitrocarburizing

Last updated: July 19, 2024

What Does Gas Nitrocarburizing Mean?

Gas nitrocarburizing is a variation of the nitriding process. It is a thermo-chemical diffusion process where nitrogen, carbon, and to a very small degree, oxygen atoms diffuse into the surface of the steel, forming a compound layer at the surface, and a diffusion layer. Nitrocarburizing is a shallow-case variation of the nitriding process.

Advertisement

Corrosionpedia Explains Gas Nitrocarburizing

The process is carried out in a sealed retort furnace at temperatures between 490°C and 530°C in a flowing ammonia atmosphere for up to 120 hours. Nitrocarburizing is more commonly applied to low-alloy steels, mild steels and cast irons, but can equally be applied to any steel which is thermally stable at the treatment temperatures.

Advantages:

· Increased abrasion resistance as a result of higher hardness and strength of the case
· Reduction of the friction coefficient, and thus improved gliding properties
· Reduced adhesion to wear partner
· Reduced reactiveness to surrounding reactive agents
· Minimum dimension change and only slight form change
· High surface hardness with suitable materials

Advertisement

Share This Term

  • Facebook
  • LinkedIn
  • Twitter

Related Reading

Trending Articles

Go back to top