Base Metal Microstructural Considerations for Anodizing Aluminum Substrates

The Effect of Sulfuric Acid Anodization on the Electrochemical Properties of Aluminum Alloy AlSi10Mg Prepared by Selective Laser Melting

“…This is because the high content of alloying elements and secondary phases prevent uniform growth of the oxide layer. 43,44 In areas free of second-phase particles, a regular porous anodic coating is formed. Inclusions, intermetallic compounds, precipitates, and other insoluble alloying elements that are incoherent with the aluminum microstructure are not anodized.…”

“…Inclusions, intermetallic compounds, precipitates, and other insoluble alloying elements that are incoherent with the aluminum microstructure are not anodized. [42][43][44] Instead, the primary aluminum oxidation reaction proceeds around them, incorporating them within the surrounding oxide. The aluminum oxide coating will therefore be discontinuous and nonuniform near these solid non-Al phases, like Si in AlSi 10 Mg. As shown in Fig.…”

High-resolution neutron imaging: a new approach to characterize water in anodic aluminum oxides

“…This has been performed using the "Extended Image Referencing" plugin in ImageJ, developed by the Neutron Imaging and Activation Group (NIAG) at PSI [1][2][3] . The resulting image 𝑇𝑇 was used for quantitative analyses.…”

“…The linear attenuation coefficient for a material can be derived experimentally from (1) or it can be calculated using ( 2) and (3):…”

“…Porous anodizing is a process widely used in industry as a surface finish for aluminum substrates to provide corrosion protection, wear resistance and decorative appearance [1][2][3] . It has also recently attracted great interest as a simple and inexpensive method to produce nanostructured materials [4][5][6] .…”