Aluminium Alloy 8011: Surface Characteristics

Abstract:

Aluminium alloys are the predominant materials in modern industries. Increased knowledge about the surface characteristics of bare aluminium can enhance the understanding about how to optimize the working conditions for the equipment involving aluminium parts. This work focusses on the properties of native surface of aluminium alloy 8011, which is the main construction material for the production of air-to-air heat exchanger fins. In this study, we address its water wettability, surface roughness and frost formation in different psychometric parameters. The contact angle measurements revealed that this aluminium alloy exhibits a relatively high contact angle of about 78 degree, i.e. is not wetted completely. AFM measurements revealed significant surface roughness of typical heat exchanger fins. The thickness of formed frost was studied in relation to the wettability, humidity and the cold surface temperature.

• Periodical: Applied Mechanics and Materials (Volumes 719-720)
• Pages: 29-37
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.719-720.29
• Online since: January 2015
• Authors: Maral Rahimi*, Peter Fojan, Leonid Gurevich, Alireza Afshari
• Keywords: Aluminium Alloy 8011, Contact Angle, Frost, Roughness, Wettability

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