Development of Nanoporous Alumina Catalyst Support by Anodic Oxidation of Thermally and Kinetically Sprayed Aluminum Coatings

Sakata, Kazunori; Tagomori, K.; Sugiyama, N.; Takenouchi, Masanori; Shinya, Yoshiaki; Morimoto, Koji; Suzuki, Yuji

doi:10.1007/s11666-012-9859-6

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…However, the wider application Al alloys were restricted due to the high chemical reactivity and low anti-corrosion performance. Many surface treatment technologies, such as thermal spraying [3], physical vapor deposition [4], chemical vapor deposition [5], laser cladding [6] and MAO [7], have been used to improve the corrosion resistance of Al alloys. Among these technologies, MAO was considered as a high productivity and eco-friendly technology, which could provide a hard ceramic film with strong adhesion and medium corrosion resistance.…”

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confidence: 99%

Preparation and properties of MAO self-healing anticorrosion film on 5B70 Al alloy

Wu,

Jiang

2023

Phys. Scr.

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Micro-arc oxidation (MAO) was a new surface treatment technology for Al alloys. However, the MAO ceramic film could not provide long-term protective performance owing to its inherent porous structure. In this work, a new type of CeO2-sealed GO/Al2O3 composite film with excellent corrosion resistance on 5B70 Al alloy was prepared by integrating MAO and the hole sealing technique. The experimental results indicated that the loose and porous MAO ceramic film could serve as a "shield" and a "reservoir", respectively, to obtain improved impedance and sufficient corrosion inhibitor loading. Compared to the original MAO ceramic film or GO/Al2O3 composite film, The GO/Al2O3 composite film after sealing treatment for 60min had lower porosity and better corrosion resistance. In addition, CeO2-sealed GO/Al2O3 composite film exhibited a positive self-healing effect in 3.5 wt.% NaCl solution.

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