本文研制了一种新型的复合化学热处理工艺。在金属表面形成了牺牲阳极复层，它的构成是以氮化形成的ε相层为内层，气相氧化层为外层，３％ＮａＣｌ水溶液浸蚀试验证明：复层抗蚀性近１０倍地优于单一的ε相层。此外笔者借助于扫描电镜Ｘ一衍射仪、能谱仪等设备对复层的抗蚀机理进行了探讨。 This paper developed a new composite chemical heat treatment process. Sacrificial anode composite layer was formed on the metal surface. The composition of the sacrificial anode composite layer was as follows: the ε phase layer formed by nitriding was the inner layer and the vapor phase oxide layer was the outer layer. The corrosion test of 3% NaCl aqueous solution proved that the corrosion resistance of the composite layer was nearly 10 times Is superior to a single ε-phase layer. In addition, the author with the aid of SEM X-ray diffractometer, spectrometer and other equipment on the anti-corrosion mechanism of the multilayer were discussed.