Comparative Analysis of Hard Anodized Layer on Aluminium Alloy

Abstract:

Hard anodized layers were produced by two different manufacturers on the same type of aluminium alloy on a vacuum pump part of complex shape. The sulphuric acid/water solution was used to produce alumina layers, which were subsequently sealed in demineralized water. A comparative analysis based on metallographic methodology, with the aim to control the stability of alumina formation process and to identify its defects, was performed by means of light and scanning electron microscopy, surface profilometry and microhardness measurements. To determine the thickness of alumina layers, the image analysis was also used.

• Periodical: Materials Science Forum (Volume 782)
• Pages: 615-618
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.782.615
• Online since: April 2014
• Authors: Lenka Klakurková*, Eduard Hégr, Ladislav Čelko, Tomáš Podrábský, Martin Juliš, Michaela Remešová, Jiří Švejcar
• Keywords: Alumina, Aluminium Alloy, Hard Anodizing, Hardness, Microscopy

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