Mechanical properties and interface toughness of metal filled nanoporous anodic aluminum oxide coatings on aluminum

The mechanical properties and coating/substrate interface toughness of nanoporous anodic aluminum oxide thin films, both unfilled and metal-filled, are investigated in the current study. A two-step anodization process is used to grow the porous oxide, which is subsequently filled with Ni. The mechan...

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Bibliographic Details
Published in:Surface & coatings technology 2014-12, Vol.260, p.246-250
Main Authors: Zechner, J., Mohanty, G., Frantz, C., Cebeci, H., Philippe, L., Michler, J.
Format: Article
Language:English
Subjects:
Aluminum oxide
Anodic
Anodic aluminum oxide
Coatings
Interface toughness
Mechanical interlocking
Mechanical properties
Micro-cantilever
Nanoindentation
Nanostructure
Oxides
Thin films
Toughness
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Summary:The mechanical properties and coating/substrate interface toughness of nanoporous anodic aluminum oxide thin films, both unfilled and metal-filled, are investigated in the current study. A two-step anodization process is used to grow the porous oxide, which is subsequently filled with Ni. The mechanical properties of the coating are probed using nanoindentation and the micro-cantilever deflection technique is used to study the interface toughness. The results are discussed and suggestions for improving the interface toughness are made. •Electrodeposition of nanoporous anodic alumina on Al and subsequent Ni filling.•Nanoindentation of unfilled and filled aluminas to determine mechanical properties.•Investigation of the interface toughness using microcantilever technique.•Discussion of the eligibility of nanoporous alumina as base layer for metallizations.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2014.08.086