Characterization of nanoporous anodic aluminum oxide formed on laser pre-treated aluminum

Wojciech Stepniowski, T. Durejko, M. Michalska-Domanska, M. Lazinska, J. Aniszewska

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Technical purity aluminum was subjected to laser pre-treatment. Subsequently, self-organized anodization in sulfuric acid was performed in order to form nanoporous oxide layer. The influence of the laser pre-treatment operating conditions and grain size of the direct solidified aluminum on the formation of the nanoporous anodic aluminum oxide was studied on the base of FE-SEM images quantitative analyses. It was found there is no significant influence of laser pre-treatment on pore diameter, interpore distance and thickness of the grown oxide. Furthermore, fast Fourier transform-based quantitative image analysis showed that arrangement of the nanoporous alumina grown on the laser pre-treated aluminum is comparable to the arrangement of nanopores formed on high-purity aluminum without any pre-treatment. These findings were supplemented by the circularity analysis of the grown nanopores. This means that laser-treated aluminum elements can be anodized without significant decreases in the quality of the anodic oxides.

Original languageEnglish
Pages (from-to)130-136
JournalMaterials Characterization
Volume122
DOIs
Publication statusPublished - 2016

Keywords

  • Anodic aluminum oxide
  • Anodization
  • Direct solidification
  • Laser melting
  • Nanopores
  • Self-organization

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