在零件表层渗入某种元素使其具有特殊性能的化学热处理方法,正日益为人们所重视。然而,如渗硼层有高硬度却较脆,渗铬层韧性较好又有卓越的耐蚀性,但渗层太薄。近年来国内外,尤其西德和苏联对二元素共渗或复合渗做了大量试验,企图 The chemical heat treatment method that infiltrating a certain element in the surface of a part to make it have special properties is increasingly valued by people. However, if the boronizing layer has high hardness but is relatively brittle, the chromizing layer has better toughness and excellent corrosion resistance, but the layer is too thin. In recent years, both at home and abroad, especially West Germany and the Soviet Union, a large number of tests have been carried out on the infiltration of two elements or on the infiltration of compounds