EFFECT OF CHROMIUM AND MOLYBDENUM ON THE PASSIVABILITY OF A NICKEL-BASED TERNARY ALLOY

New data on the effect of chromium and molybdenum on the passivation o f nickel alloys were obtained and generalized. Acting jointly, chromiu m and molybdenum completely suppress the active dissolution of the nic kel base of the NiCr15Mo 15 alloy by transferring it into the joint pa ssive state. The passivating effects of molybdenum upon the nickel-chr omium base of the alloy in the potential range of cathodic hydrogen ev olution and chromium on the nickel-molybdenum base in the range of mol ybdenum transpassivity were ascertained. The regularities were explain ed in the terms of the dependence of the passivation features of a sol id solution on the inductive interaction between reactions proceeding on its components.