Abstract
A mathematical model is developed to simulate the electrodeposition of the nickel‐iron alloy from simple sulfate solutions. Equilibrium calculations indicate the importance of the metal monohydroxide species in the codeposition mechanism. A one‐dimensional diffusion model of the codeposition is developed and agrees well with experimental results for different bath compositions and operating conditions. The sensitivity of the model is evaluated and a mechanism for the anomalous codeposition of nickel‐iron is proposed.