氮碳共渗是一种提高钢件表层的硬度、耐磨性和抗腐蚀性、抗咬合能力的化学热处理方法。与一般气体渗氮相比,其渗层硬度较低,脆性较小,故又被称为软氮化。氮碳共渗还具有比渗氮处理温度低、时间短,工件畸变小,渗氮层无脆性ξ相,有较好的韧性,不容易剥落等优点。 Nitrocarburizing is a chemical heat treatment method that enhances the hardness, wear resistance, corrosion resistance and anti-seizure ability of the surface layer of steel. Compared with the general gas nitriding, its infiltration layer hardness lower brittleness, it is also known as soft nitriding. Nitrocarburizing also has the advantages of low temperature, short time, small workpiece distortion, no brittle ξ phase in nitriding layer, better toughness and less peeling than nitriding.