钢件化学热处理强化层的抗蚀性是强化层的重要性能之一,近年来,金相教研室运用电化学的方法,对这一表层的抗蚀性进行系统的研究。测定了15号钢、20Cr,38GMoAl,2Cr13经过常用的化学热处理工艺处理后,强化层的电极电位,由测试可知:合金氮化钢的ε相层,能够获得电位为正的抗蚀能力。还测定了极化曲线,可以初步计算腐蚀速率。这 In recent years, the metallographic teaching and research room uses the electrochemical method to systematically study the corrosion resistance of this surface layer. After the steel 15, 20Cr, 38GMoAl and 2Cr13 were treated by the common chemical heat treatment process, the electrode potentials of the strengthened layer were measured. From the test, it can be seen that the ε potential layer of the alloy nitrided steel can obtain the positive potential corrosion resistance. Polarization curves were also measured and the initial corrosion rate was calculated. This