engleski

Electric and dialectric characteristics of the anodised aluminium

Oxide layers of different properties can be formed by anodic oxidation of aluminium, depending upon the condition of electrochemical process, primarily of kind of electrolyte, current density, voltage and duration of anodization. The investigated samples were anodized in the solution of borate under different conditions.The phosphate and nitrate solutions of various pH values were used as contact electrolyte.In the same experimental conditions the contact angle and zeta potential were measured.The investigation results show that the relaxation phenomena is present in some system according to pH and the concentracion of contact electolyte.The obtained results are discused in the relation of the relaxation phenomena, the influence of anions in contact solution and surface charge and hydrophilic ability.

anodized aluminium; electric properties; dielectric properties

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