What is nitriding used for?

Nitriding is used on ferrous, titanium, aluminum, and molybdenum alloys, and most commonly on low-carbon, low-alloy steels. Nitrocarburizing is only used on ferrous alloys. They improve surface properties of metal components and tools such as scuff and corrosion resistance, and increase the fatigue strength.

What are the main advantage of nitriding than salt bath nitriding?

Tribological Advantages. Gas and ion nitriding are growth markets for surface thermochemical treatments due in part to tribological benefits (related to fatigue, lubricity and wear). In addition, nitriding allows for low-temperature, low-distortion heat treatment. Nitriding also offers enhanced corrosion resistance.

What is salt bath nitriding process?

The hallmark of salt bath nitriding is the bath of molten salt (usually cyanide or other salts) into which parts are submerged. The method features the transfer via diffusion of carbon and nitrogen from the molten salt to the surface of a steel part.

What is nitriding surface treatment?

Nitriding is a surface treatment process that can be applied to a variety of machine components. The process provides a very hard surface while maintaining a “tough” core and tight tolerances can still be achieved. This process is applied at low temperatures so that part distortion is not an issue.

What materials can be nitrided?

What materials can be used for nitride? Alloy steels, carbon steels, cast irons, tool steels, stainless steels, inconel and titanium.

Does salt bath nitriding add thickness?

During nitriding the volume of the component increases by 3% of the layer thickness.

Which gas is used in nitriding?

ammonia
Gas nitriding uses ammonia or ammonia–hydrogen mixtures to enhance the nitrogen activity. Ammonia easily dissociates into gaseous nitrogen and hydrogen according to the chemical equilibrium.

Can stainless steel nitrided?

Gas Nitriding of stainless steel is possible but is not commonly available due to the complexity involved. The second challenge with stainless steels is the high amount of Chromium. Chromium has a high affinity for nitrogen and slows diffusion, thereby limiting the achievable case depth.