Plasma ION nitriding is an industrial surface hardening treatment for iron-based materials. It is the most technically superior of all nitriding processes and has many advantages compared to traditional salt bath and gas nitriding.
A plasma nitrided part is usually ready for use directly after treatment requiring no machining, polishing or any other post-nitriding finishing operations. The process is eco-friendly, saves energy and causes little or no distortion.
This process permits the close control of the nitrided microstructure, allowing nitriding with or without compound layer (white layer) formation. In addition to enhanced material performance, the lifespan of your parts will increase with much improved strain limits, fatigue strength, wear resistance and corrosion protection.
It is a case hardening treatment performed in a mixture of nitrogen and hydrogen with small additions of gases containing carbon. In this process a high voltage electrical charge forms plasma, causing nitrogen ions to accelerate and impinge on the applicable material. When the nitrogen ions bombard the part, they heat up the metal, clean the surface and diffuse nitrogen into the surface. It extends part/tool life. It adds performance, fatigue strength and endurance. It enhances surface lubricity and reduces erosion. It increases material flow in molds and dies. It helps in selective hardening processes.
The Plasma Ion process is done in a vacuum vessel at low temperatures (750°-1040°F or 400°-560°C) where high-voltage electrical charge forms plasma, causing nitrogen ions to accelerate and impinge on the metal. When the nitrogen ions bombard the part they heat up metal, clean the surface, and absorb nitrogen into the surface, and can be applied to any ferrous metal.