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Anodizing as an Industrial Process

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The Metallurgy of Anodizing Aluminum

Abstract

This chapter provides a brief overview and summary of the steps that comprise the industrial process for anodizing aluminum, the various types of, and applications for, the anodic aluminum oxide (AAO). Images of various types of AAO, grown from various electrolytes under various industrial anodizing process conditions, are presented, highlighting the structural characteristics of the AAO. The unique, highly ordered cellular structure can be tuned by adjusting the process parameters, enabling engineering adjustment of the diameter of the central pore and the cell walls. The ionic nature of the central pore offers reaction sites for bonding with other molecules, providing a surface for dyeing, coloring, and bonding. AAO structural integrity provides a barrier to the external environment and corrosion protection over a fixed pH range; the size and residual stress within the AAO structure provide abrasion and wear resistance.

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Authors and Affiliations

  1. Chicago, IL, USA

    Jude Mary Runge

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  1. Jude Mary Runge
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Runge, J.M. (2018). Anodizing as an Industrial Process. In: The Metallurgy of Anodizing Aluminum. Springer, Cham. https://doi.org/10.1007/978-3-319-72177-4_3

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