Analysis of Physical Factors on Chosen Properties of Anodic Alumina Oxide (aao) Layers and Environment

M. Gombar, J. Kmec, Institute of Technology and Businesses in České Budějovice, Czech Republic, M. Badida, L. Sobotova, A.Badidová, Faculty of Mechanical Engineering, Technical University of Kosice, Slovakia, A.Vagaská, Faculty of Manufacturing Technologies with a seat in Presov, Technical University of Kosice, Slovakia In the contribution is evaluated an impact of physical factors of anodizing process, namely the temperature of an electrolyte, anodizing time and voltage, on the change of values of Vickers microhardness and thickness of formed layer of experimental materials Al99∙5. By increasing of electrolyte temperature, the values of layer microhardness and thickness layer increase, namely about 0.78 % at the increasing of electrolyte temperature by 1 °C. By lengthening of anodizing time grows the value of layer thickness, but only to the value of the critical deposition time, when chemical dissolution of the layer start to be more prominent. By voltage increasing, values of layer thickness and micro-hardness are increased in the range of the used experimental values.