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Structure and Stability of Anodic Films Formed on Aluminum Containing Dispersed Al3Fe Phase

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References

1978

Year

Abstract

Al‐Fe alloys containing particles of micron size were anodized at 5 mA/cm2 in and film growth was studied by electron microscopy. It was deduced that the particles were removed by pitting of the matrix progressing preferentially around their margins followed by reanodization of the pit to form a loose pocket of film around the particle. The particle may fall out or be retained depending on the geometry.