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This article discusses the properties of aluminum surface and the applications of aluminum alloys. It explains the effects of trace elements on aluminum alloys. The article considers microstructural development of aluminum in terms of the surface and explains how it will impact corrosion resistance and surface treatment. It describes the thermodynamics of equilibrium oxidation processes and non-equilibrium corrosion processes. The article provides a discussion on aluminum oxidation under atmospheric and dynamic conditions. It presents the potential/pH (Pourbaix) diagram for aluminum under atmospheric and dynamic conditions. The article also explains the polarization effects during the formation of stable aluminum oxide under dynamic conditions. It concludes with information on the designation system for aluminum finishes.

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Jude Mary Runge, John Weritz, Metallurgy Basics for Aluminum Surface Treatment, Aluminum Science and Technology, Vol 2A, ASM Handbook, Edited By Kevin Anderson, FASM, John Weritz, J. Gilbert Kaufman, FASM, ASM International, 2018, p 555–567,

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