I have heard of UltraGlow® Ion Nitriding but do not know exactly what it is?
The process is conducted in a vacuum chamber back-filled to a very low pressure with a mixture of nitrogen and other gases. A high voltage electrical charge forms plasma from the gas mixture. Nitrogen ions then accelerate through the plasma and impinge on the workpiece. The ion-bombardment process heats the workpiece, cleans its surface, and results in absorption of active nitrogen into the surface of the material producing a "hardened case".
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