Carbonitriding is a surface hardening process that is similar to carburizing but involves the addition of nitrogen to the metal surface in addition to carbon. The process involves heating a low-carbon steel or iron object in a gas mixture that contains both carbon and nitrogen.
Carbonitriding is commonly used in the production of parts that require both hardness and toughness, such as gears, crankshafts, and connecting rods. It is also used in the production of components that require high corrosion resistance, such as valve stems and hydraulic cylinders.
The process of carbonitriding can be carried out using a variety of techniques, including gas carbonitriding, salt bath carbonitriding, and plasma carbonitriding, each of which has its own advantages and disadvantages.
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