BADIDA, M, M GOMBÁR, Ján KMEC, L SOBOTOVÁ, A VAGASKÁ and P MICHAL. Study of the influence of chemical composition of the electrolyte on microhardness of the layer formed by anodic oxidation of Aluminium. Chemicke Listy. Czech Society of Chemical Engineering, vol. 107, No 12, p. 973-977, 4 pp. ISSN 0009-2770. 2013.
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Basic information
Original name Study of the influence of chemical composition of the electrolyte on microhardness of the layer formed by anodic oxidation of Aluminium
Authors BADIDA, M, M GOMBÁR, Ján KMEC, L SOBOTOVÁ, A VAGASKÁ and P MICHAL.
Edition Chemicke Listy, Czech Society of Chemical Engineering, 2013, 0009-2770.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 20506 Coating and films
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Organization unit Institute of Technology and Business in České Budějovice
Tags KSTR5, NAM_1
Changed by Changed by: Mgr. Václav Karas, učo 10752. Changed: 8/4/2014 13:33.
Abstract
With the aim to improve mechanical properties of the layer formed by anodic oxidation of Al on the material EN-AW-1050-H24 the microhardness of the layer was investigated as a function of physical and chemical factors acting in the anodic oxidation at constant current density JA = 1 A dm-2. The electrolyte was a mixture of H2SO4 and oxalic acid. Emphasis was put on the effect of H2SO4 concentration ranging from 0.09 to 2.76 mol dm-3 on the microhardness. In the experiment were carried out 44 separate attempts with the change of the current values of the individual factors under defined levels for each implementation. With this in mind, the surface treatment processes are multifactorial systems where, except the main effects, reciprocal interactions are also very significantly influenced. Failure to respect these mutual relations of the operating agents, often leads to misconceptions and misinterpretations. Therefore, the paper also addresses the interaction of the chemical composition of the electrolyte with physical factors: time of anodizing, voltage and temperature of the electrolyte.
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