Abstract
The occurrence of volume diffusion during anodic dissolution of Cu‐Au alloys at room temperature is shown again by x‐ray and electron diffraction, confirming the result of a previous study. After dissolution the intensity of the diffracted x‐rays is increased at Bragg angles, θ, corresponding to intermediate Cu‐Au compositions. Electron diffraction patterns exhibit new broad diffraction rings corresponding to the formation of intermediate compositions after very early stages of anodic dissolution of about 100 atomic layers of Cu dissolved.

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